VIII. Regional Surveys

1. Big Rock Creek Camp (Paradise Springs), Valyermo Area

Collection Dates:
August 5,9,11, 2005
May 2,5, 2008
June, 9, 2008
Last Update: May23, 2010

Location: 18101 Paradise Drive, Valyermo CA 93563, Big Rock Creek
Quad: Valyermo
T 4N R 9W Section 24
Long. 117 deg. 46 min. 39 sec. w. Lat. 34 deg. 24 min. 51 sec. N
Elevatioin: 4720 ft.
Description/Habitat: Permanent springs, seeps and streams, surrounded by Pinyon-Juniper Woodland. Comprises 140 acres of privately owned by Gig Rock Creek Camp. Riparian includes Big Rock Cr. bottom on the north boundary? This is often dry diring summer/fall months on an average year. A narrow stream channel-fed by springs, runs year-round just south of the main wash. This stream system has numerous cement holding areas including trout ponds. This runs just north of the main camp facility. It lies along the San Andreas Fault.
Total species: 191

Special Conditions: There are many man-made rock and cement structures along the tream pathway.
Animal Observatioins: Several Hyla regilla

Species List:

Ferns And Their Allies:

Pteridaceae Brake Family
Pallaea mucronata (D.C. Eat.) D.C. Eat., Bird’s-foot Fern FC, s.-facing slope in n. area

Gymnosperms:

Ephedraceae Ephedra Family
Ephedra viridis Cov., Green Ephedra, Mormon Tea A

Pinaceae Pine Family
Pinus jeffryi Brev. & Baulf., Jeffrey Pine NC U
Pinus monophylla Torr. & Fremont, Singleleaf Pinyon NC A
Pseudotsuga macrocarpus (Vasey) Mayr., Big-cone Spruce NC FC, n.-facing slope in s. area

Dicotyledons:

Amaranthaceae Amaranthus Family
Amaranthus albus L., Prostrate Pigweed U

Apiaceae Carrot Family
Apiastrum sp. U
Lomatium mohavense (J.M. Coult. & Rose) J. Coult. & Rose ssp. mohavense,Mojave Desertparsley U

Asclepiadaceae Milkweed Family
Asclepias fascicularis Decne., Narrow-leaf Milkweed, Mexican Whorled Milkweed
FC
Asteraceae Sunflower Family
Ambrosia acanthacarpa Hook., Annual Bur-sage, Flatspine Bur-ragweed
Antheropias wallacei (A. Gray) Rydb., Wallace’s Wooly Daisy, Woolly Easterbonnets
R
Artemisia douglasiana Besser, Mugwort, Douglas’ Sagewort FC, dry areas in cyn. bottom
Artemisia dracunculus L., Taragon FC, dry areas in cyn. bottom
Artemisia ludoviciana Nutt.,, Silver Wormwood, White Sagebrush FC, dry areas in cyn. bottom
Artemisia tridentata Nutt., Great-basin Sagebrush, Big Sagebrush A
Baccharis salicifolia (Ruiz & Pav.) Pers., Mule Fat
Calycoseris parryi A. Gray, Yellow Tackstem R
Chaenactis glabriuscula DC. U
Conyza canadensis L., Horseweed U, dry areas in cyn. bottom
Ericameria liniarifolia (DC.) Urb & J. Wussow, Interior Goldenbush, Narrowleaf Goldenbush A
Ericameria nausiosa (Pall. ex Pursh) G.L. Nesom & Baird, Rubber Rabbitbrush A
Erigeron foliolosus Nutt., Leafy Fleabane (Daisy)
Eriophyllum confertiflorum (DC.) A. Gray, Golden Yarrow FC, mostly in n. area
Euthamia occidentalis Nutt., Western Golden Rod A
Gutierezia sp., Matchweed A
Helenium bigelovii Gray, Bigelow’s Sneezeweed C
Hulsea heterochroma A. Gray, Red-rrayed Hulsea, Redray Alpinegold R
Lactuca serriola L., Prickly Lettuce FC
Lepidospartum squamatum (A. Gray) A. Gray, Scale-broom, California Broomsage A
Senecio flaccidus Less. var. douglasii (DC.) B. Turner & T. Barkley, Bush Senecio, Shrubby Butterweed, Douglas’ Ragwort FC
Solidago spectabilis (D.C. Eatjon) A. Gray var. confinus (A. Gray) Cronquist, Southern Goldenrod, Nevada Goldenrod A
Sonchus oleraceous L., Common Sowthistle FC
Stephanomeria sp. U
Stephanomeria pauciflora (Torr.) A. Nelson, Brownplume Wirelettuce C
Taraxicum officinale F.H. Wigg., Common Dandelion U

Betulaceae Birch Family
Alnus rhombifolia Nutt., White Alder C, along stream-bottom

Boraginaceae Borage Family
Cryptantha barbigera (A. Gray) Greene, Bearded Cryptantha R
Cryptantha circumscissa (Hook. & Arn.) I.M. Johnst., Cushion Cryptantha FC
Cryptantha decipiens (M.E. Jones) A. Heller, Gravelbar Cryptantha U
Cryptantha muricata (Hook. & Arn.) Nelson & J.F. Macbr., Prickly Cryptantha, Pointed Cryptantha C
Cryptantha pterocarya (Torr.) Greene, Wingnut Cryptantha R

Brassicaceae Mustard Family
Arabis sp. U
Caulanthus amplexicaulis S. Watson, Claspingleaf Wild Cabbage R
Descurainia pinnata (Walter) Britton, Western Tansymustard U
Descurainia sophia (L.) Webb, Herb Sophia U
Erysimum capitatum (Douglas ex Hook.) Greene, Western or Sanddune Wallflower R
Hirschfeldia incana (L.) Lagr.-Fossat, Shortpod Mustard C
Nastrutium officinale W.T. Aiton, Water Cress A
Sisymbrium altissimum L., Jim Hill Mustard, Tall Tumble Mustard R
Sisymbrium orientale L., Oriental Mustard, Indian Hedgemustard U
Thysanocarpus laciniatus Nutt., Mountain Fringepod A

Cactaceae Cactus Family
Opuntia basilaris Engelm. & Bigelow, Beavertail Pricklypear R
Opuntia phaecantha Engelm., Tulip Pricklypear R

Caprifoliaceae Honeysuckle Family
Lonicera subspicata H. & A., Hook. & Arn. Southern Honeysuckle, Santa Barbara Honeysuckle FC

Chenopodiaceae Goosefoot Family
Chenopodium sp. FC
Chenopodium berlandieri Moq., Pitseed Goosefoot C
Chenopodium botrys L., Jerusalem Oak, Goosefoot FC
Salsola tragus L., Prickly Russian Thistle U

Cuscutaceae Dodder Family
Cuscuta ceanothi Behr., Canyon Dodder C, on Fremontadendron californica & Artemisia dracunculus

Ericaceae Heath Family
Arctstaphylos glauca Lindl., Bigberry Manzanita C

Euphorbiaceae Spurge Family
Chamaesyce albomarginata (Tor. & A. Gray) Small, Rattlesnake Weed, Whitemargin Sandmat C, dry areas of full exposure

Fabaceae Pea Family
Lotus heermannii (Dur. & Hilg.) Greene, Silky Lotus U, dry cyn. bottom
Lotus oblongifolius (Benth.) Greene, Streambank Bird’s-foot Trefoil R
Lotus unifoliatus (Hook.) Benth. var. unifoliatus, American Bird’sfoot Trefoil C, dry areas in full exposure in cyn. bottom
Lupinus microcarpus check current status U
Medicago lupulina L., Yellow Trefoil, Black Medick R
Mellilotus albus check status A

Fagaceae Oak Family
Quercus chrysoleplis Liebm., Maul Oak, Golden Cup Oak, Canyon Live Oak U
Quercus john-tuckeri K. Nixon & C.H. Muller, Tucker Oak A

Garryaceae Silk Tassel Family
Garrya sp., Silktassel FC
Gentianaceae
Centaurium exaltatum (Griseb) W. Wight ex. Peper Uncommon, common only in marshy area to the e. of camp.

Geraniaceae Geranium Family
Erodium cicutarium (L.) L’Her., Redstem Filaree (Stork’s Bill) C

Grossulariaceae Gooseberry Family
Ribes sp. R

Hydrophyllaceae Waterleaf Family
Emmenanthe penduliflora Benth., Whispering Bells U
Eriodictyon trichocalyx A.A. Heller, Smoothleaf Yerba Santa C
Phacelia distans Benth., Common Phacelia, Distant Phacelia U
Phacelia fremontii Torr., Fremont’s Phacelia FC
Phacelia lemmonii A. Gray, Lemmon’s Phacelia R
Phacelia longipes A. Gray, Longstalk or Scorpionweed Phacelia U
Turricula parryi (A. Gray) J.F. Macbr., Sticky Poodle-dog Bush, Common Turricula R, distrubed soil at base of n.-facing slope, s. of cyn. bottom

Lamiaceae Mint Family
Mentha aquatica L. Water Mint C, at stream margins in central camp area
Pycnanthemum californicum Torr., Sierra Mint C
Salazaria mexicana Torr., Mexican Bladder Sage U, s.-facing slope in the n. area
Salvia columbariae Benth., Chia C, most common on s.-facing slope, n. of wash
Stachys albens A. Gray, Cobwebby Hedge-nettle, White-stem Hedgenettle C

Loasaceae Stick-Leaf Family
Mentzelia laevicaulis (Hook.) Torr. & A. Gray, Giant Blazing Star, Smoothstem Blazingstar U
Mentzelia veatchiana Kellogg, Veatch’s Blazing Star R

Malvaceae Mallow Family
Malacothamnus fremontii A. Gray, Fremont’s Bush Mallow FC

Nyctaginaceae Four O’Clock Family
Mirabilis laevis (Benth.) Curran var. crassifolius (Choisy) Spellerb., California Four-O’Clock U

Oleaceae Olive Family
Forestierea pubescens Nutt., Desert Olive, Stretchberry U

Onagraceae Evening Primrose Family
Camissonia sp. R, dry cyn. bottom
Camissonia bothii (Douglas) P.H. Raven, Booth’s Sun Cup, Evening Primrose FC, s.-facing slope in n. area
Camissonia claviformis (Torr. & Fremont) P.H. Raven, Browneyes U
Camissonia confusa P.H. Raven, San Bernardino Suncup C
Epilobium ciliatum Raf., Willow Herb C
Epilobiuim sp. R
Oenothera elata Kunth. ssp. hirsutissima (A. Gray ex Watson) W. Dietr., Hooker’s Evening Primrose C

Papaveraceae Poppy Family
Erhendorpheria chrysantha (Hook. & Arn.) Kylander, Golden Eardrops R

Plantaginaceae Plantain Family
Plantago major. L., Common Plantain C

Platanceae Sycamore Family
Platanus recemosa Nutt., Western or California Sycamore NC FC, along stream bottom

Polemoniaceae Pink Family
Eriastrum densifolium (Benth.) H. Mason, Giant Woollystar FC
Leptosyphon breviculis (Benth.) J.M. Porter & L.A. Johnson, Mojave Linanthus U

Polygonaceae Buckwheat Family
Eriogonum sp.
Eriogonum davidsonnii E. Greene, Davidson’s Buckwheat C
Eriogonum fasciculatum Benth. var. polifolium (Benth.) Torr. & A. Gray, California Buckwheat, Eastern Mojave Buckwheat A
Eriogonum heermannii Durand & Hilg., Heerman’s Buckwheat C, s.-facing slope in n. area
Eriogonum pussillum Torr. & A. Gray, Yellowturbins U
Polygonum aviculare L., (ssp. is needed to determine current sp. status) R
Rumex conglomeratus Murray, Clustered Dock R

Portulacaceae Purslane Family
Cistanthe monandra (Nutt.) Hershkovitz, Sand Cress, Common Pussypaws U
Portulaca oleracia L., Little Hogseed R

Ranunculaceae Buttercup Family
Aquilegia formosa Fischer, Western Columbine U, in far-east marshy area
Clematus ligusticifolia Nutt., Virgin’s Bower, Yerba De Chiva, Western White Clematis U (C by area covered)

Rhamnaceae Buckthorn Family
Frangula californica (Eschsch.) A. Gray, California Coffeeberry, Buckthorn C
Rhamnus ilicifolia Kellogg, Hollyleaf Redberry C

Rosaceae Rose Family
Cercocarpus montanus Raf. var. glaber (S. Watson) F.L. Martin, Birch-leaf Mountain Mahogany U
Prunus fasciculata (Torr.) A. Gray, Desert Almond FC, s.-facing slope in the n. area
Purshia glandulosa Curran, Desert Bitterbrush FC, most common in dry wash areas

Rubiaceae Bedstraw Family
Gallium sp. R
Gallium angustifolium Nutt. ex A. Gray, Narrow-leaved Bedstraw FC

Salicaceae Willow Family
Populus balsamifera L. ssp. trichocarpa (Torr. & A. Gray) Brayshaw, Black Cottonwood FC ?
Populus fremontii S. Watson ssp. fremontii, Alamo or Fremont Cottonwood C
Salix exigua Nutt., Slender Sandbar Willow, Narrowleaf Willow A
Salix goodingii C. Ball, Gooding’s (Black) willow FC
Salix lasiolepis Benth., Arroyo Willow A

Scrophulariaceae Snapdragon Family
Castilleja minor (A. Gray) A. Gray ssp. spiralis (Jepson) Chuang & Heckard, Lesser Indian Paintbrush C
Cordylanthus rigidus (Benth.) Jepson ssp. setigerus, Chuan & Heckard, Rigid Bird’s Beak
FC, damp area margins
Keckiella ternata (Torr. ex A. Gray) Straw, Whorledleafed or Scarlet Keckiella FC
Mimetanthe pilosa (Benth.) Greene, False Monkeyflower U
Mimulus sp. yellow A
Mimulus bigelovii (A. Gray) A. Gray, Bigelow’s Monkeyflower
U,dark, granular soil
Mimulus cardinalis Benth., Scarlet Monkeyflower FC
Mimulus floribundus Dougl., Floriferous Monkeyflower U ?
Mimulus guttatus DC., Common Monkeyflower, Seep Monkeyflower A
Mimulus johnstonii Grant, Johnston’s Monkeyflower R, in dark, granular soil, in the n. area, rift zone area
Mimulus parishii E. Greene, Parish’s Monkeyflower C
Penstemon centranthifolia (Benth.) Benth., Scarlet Bugler U
Penstemon rostriflorus Kell., Beaked Penstemon FC
Veronica anagallus-aquatica L., Water Speedwell A

Solanaceae Nightshade Family
Nicotiana attenuata Torr., Coyote Tobacco U
Solanum sp. U

Sterculiaceae Cacao Family
Fremontodendron californicum (Torr.) Cov., California Freemontia or Flannelbush C

Urticaceae Nettle Family
Urtica dioica L. ssp. holosericia (Nutt.) Thorne, Hoary or Stinging Nettle A

Verbenaceae Verbena Family
Verbena lasiostachys Link., Western Vervain C

Viscaceae Mistletoe Family
Phorodendron macrophyllum (Engelm.) Cockerell, Big Leaf Mistletoe, Colorado Desert Mistletoe FC ?
Phorodendron villosum (Nutt.) Nutt., Oak MIstletoe, Pacific Mistletoe C

Zygophyllaceae Caltrop Family
Tribulus terestris L. Puncturevine U, distrubed soil

Monocotyledons:

Cyperaceae Sedge Family
Carex sp. R
Carex sp. FC
Carex sp. ?
Cypeus odoratus L., Fragrent Flatsedge FC
Eleocharis sp. U Eleocharis sp. U
Eleocharis sp. R
Eleocharis sp. U

Juncaceae Rush Family
Juncus sp. R
Juncus sp. FC
Juncus sp. ?
Juncus sp. A
Juncus balticus Willd., Wire Rush A
Juncus bufonius L., Toad Rush A
Juncus macrophyllus Cov., Longleaf Rush FC
Juncus rugulosus Engelm. Wrinkled Rush FC ?
Juncus xiphioides E. Mey., Irisleaf Rush C

Liliaceae Lily Family
Calochortus kennedyi Porter, Desert Mariposa Lily R
Hesperoyucca whipplei Torr., Chaparral Yucca C

Orchidaceae Orchid Family
Epipactis gigantea Dougl. ex. Hook. Stream Orchid C, 1 pop. in marshy area in the far e.

Poaceae Grass Family
Achnatherum speciosum (Trin. & Rupr.) Barkworth, Desert Needlegrass FC
Agrostis exarata Trin., Spike Bentgrass U
Bromus madritensis L. ssp. rubens, Compact Brome Check __ FC
Bromus tectorum L., Downy Brome, Cheat Grass A
Cynodon dactylon (L.) Pers. Bermuda Grass U
Eleusine indica (L.) Gaertn., Indian Goosegrass R
Elymus elymoides (Raf.) Swezey, Squirreltail U
Leymus triticoides (Buckley) Pilg., Beardless Wildrye FC
Lolium perenne L. ssp. perenne Italian Ryegrass U
Melica imperfecta Trin., Coast-range Melic, Smallflower Melicgrass FC, mostly in n. area
Muhlenbergia sp. R
Muhlenbergia rigens (L.) Cronq. Deergrass FC
Panicum capillare L., Witchgrass R
Poa sp. ? Poa annua L., Annual Blue Grass U
Poa pratensis L., Kentucky Bluegrass R
Polypogon interruptus Kunth. Ditch Beard Grass, Rabbitsfoot Grass FC
Polypogon viridis (Gouan) Briestra., Green Bentgrass, Beardless Rabbitsfoot Grass
Schedonorus phoenix (Scop.) Holub., Tall Fescue FC

Typhaceae Cattail Family
Typha sp., Cattail FC

Zanachelliaceae Horned Pondweed Family
Zaninchellia palustris L., Horned Pondweed U, ponds upstream from trout ponds (artificial)


2. Bob’s Gap - Valyermo Area

Collection Dates:

April 18, 2001
May 17, 2001
December 11, 2008
April 2, 2009
May 13, 2009
Location:
Los Angeles County, Valyermo area, Bobs Gap which separates Holcomb Ridge, 3.0 mi. s. of hwy. 138 to the n. end of the gap. The gap continues for 0.9 mi. at the jnct. of 165 th St. and Bobs Gap Rd. (dirt). This is the s. end of the gap at 3.9 mi. s. of Hwy. 138.
Map Quad: Valyermo
Lat: 34 deg. 27’ 6-10 “ N.
Long: 117 deg. 48‘ 41-55” W.
Township: 4 N
Range: 9 W
Section
Elevation: 4010-4200 ft. (1223-1280 m.)
Region description: The wash which creates the gap in Holcomb Ridge is the center of the study. I have collected the canyon slopes on both sides of the wash including the ridge tops of each, thus there is an elevation range of 190 ft. Granitic, sandy soil in the wash bottom with rocks, rocky-sandy soil on the s.-facing slopes
Plant communities: Joshua tree woodland, pinyon-juniper woodland

Species List:
*Plants collected in 2008 & 2009 - verification/identification pending.


Gymnosperms:

Cupressaceae Cypress Family
Juniperus californica Carriere, California Juniper C

Ephedraceae Ephedra Family
Ephedra nevadensis S. Watson, Nevada Ephedra, Nevada Jointfir
NC C
Ephedra viridis Cov., Green Ephedra, Morman Tea A
Dicotyledons:

Apiaceae Carrot Family
Lomatium mohavense (J. Coulter & Rose) J. Coulter & Rose, Mojave Desertparsley
R, e. ridge top

Asteraceae Sunflower Family
Acamptopappus sphaerocephalus (A. Gray) A. Gray, Rayless Goldenhead
U, on e. side of wash at s. end of Bob’s Gap
*Ambrosia acanthicarpa Hook., Annual Bur-sage, Flatspine Bur-ragweed C
Anisocoma acaulis Torrey & A. Gray, Scalebud R
Antheropeas wallacei (A. Gray) Rydb., Wallace’s Woolly Daisy, Woolly Easterbonnets
U
Artemisia tridentata Nutt., Great-basin Sagebrush, Big Sagebrush NC FC in wash area to the south
Chaenactis stevioides Hook. & Arn., Desert Pincushion, Desert Pincushion, Esteve’s Pincushion C, throughout
*Coreopsis bigelovii (A. Gray) H.M. Hall, Bigelow’s Coreopsis, Bigelow’s Tickseed
C, throughout
Encelia actoni Elmer, Acton’s Encelia or Brittlebush C
*Ericameria linearifolia (DC.) Urb. & J. Wussow, Interior Goldenbush, Narrowleaf Gloldenbush C on ridges & cnyn. bottom
Ericameria nausiosa (Pallas) G.L. Nesom & Baird, Rabbitbrush NC C
Eriophyllum pringlei A. Gray, Pringle’s Woolly Sunflower U
*Gutierrezia sp. FC
*Hymenoclea salsola Torr. & A. Gray, Burrowbrush, Cheeseweed C
Laya glandulosa (Hook.) Hook. & Arn., White Layia, Whitedaisy Tidytips C
*Lepidospartum squamatum (A. Gray) A. Gray, Scale-broom, California Broomsage C in wash bottom
Lessingia glandulifera A. Gray, Valley Lessingia NC A in s. area only
Microseris lindleyi (DC.) A. Gray, Lindley’s Silverpuffs U, mostly wash bottom
Tetradymia axillaris Nelson var. longispina (M.E. Jones) Strother
U
Xylorhiza tortifolia (Torrey & A. Gray) E. Greene, Mojave Woodyaster FC on ridge on both sides of wash near s. end

Boraginaceae Borage Family
Amsinckia tessellata A. Gray, Devil’s Lettuce, Bristly Fiddleneck A
Cryptantha sp.
Cryptantha barbigera (A. Gray) E. Greene, Bearded Cryptantha C, wash bottom
Cryptantha circumscissa (Hook. & Arn.) I.M. Johnston, Cushion Cryptantha
NC FC
Cryptantha pterocarya (Torrey) E. Greene, Wingnut Cryptantha FC, mostly wash bottom
Cryptantha similis Mathew & Raven, Desert Cryptantha C
Pectocarya penicillata (Hook. & Arn.) A. DC., Sleeping Combseed U
Pectocarya setosa A. Gray, Moth Combseed R

Brassicaceae Mustard Family
Arabis pulchra M.E. Jones, Beautiful Rockcress FC
Caulanthus cooperi (S. Watson) Payson, Cooper’s Jewelflower, Cooper’s Wild Cabbage
FC
Descurania pinnata (Walter) Britton, Western Tansymustard C
Erysimum capitatum (Douglas) E. Greene, Western Wallflower, Sanddune Wallflower
U
Guillenia lasiophylla (Hook. & Arn.) E. Greene, California Mustard C
Lepidium fremontii S. Watson, Desert Pepperwood FC, on ridge top w. of wash
Sisymbrium sp. U, mostly in wash bottom
Stanleya pinnata (Pursh) Britton, Desert Princesplume U on w. side of wash in s. area on e. facing slope
*Thysanocarpus sp. R

Cactaceae Cactus Family
Opuntia basilaris Engelm. & J. Bigelow, Beavertail Pricklypear NC R, 1 plant on s.-facing ridge w. of wash & 1 plant on ridge-top c. 200 m. e. of gap

Chenopodiaceae Goosefoot Family
*Atriplex canescens (Pursh) Nutt, Thinleaf Fourwing Saltbush FC, mostly in wash area
*Chenopodium californicum (S. Watson) S. Watson, California Goosefoot U, scattered throughout
Krascheninnikovia lanata (Pursh) A.D.J. Meeuse & Smit, Winter Fat FC, near wash bottom
Salsola tragus L., Tumbleweed, Russian Thistle NC FC in wash bottom

Cuscutaceae Dodder Family
Cuscuta sp. NC R on Ericameria nauseosa

Euphorbiaceae Spurge Family
Chamaesyce albomarginata (Torrey & A. Gray) Small, Rattlesnake Weed, Whitemargin Sandmat C

Fabaceae Pea Family
Astragalus coccineus Brandegee, Scarlet Milkvetch FC on ridge w. of Bob’s Gap
Astragalus didymocarpus Hook. & Arn., Two-seeded Milkvetch, Dwarf White Milkvetch
R, 1 pop. on ridge w. of Bob’s Gap
Lotus scoparius (Nutt.) Ottley var. brevielatus Ottley, Western Bird’s-foot Trefoil
NC FC
Lupinus concinnus J. Agardh, Bajada Lupine U
Lupinus excubitus M.E. Jones, Mountain Springs Bush Lupine, Grape Soda,Lupine
FC

Hydrophyllaceae Waterleaf Family
Eriodictyon trichocalyx A.A. Heller, Smoothleaf Yerba Santa C, mostly in wash bottom and s. area
Nama demissum A. Gray, Purplemat R, in wash bottom
Nemophila menziesii Hook. & Arn., Baby Blue Eyes R in wash bottom, FC on e. ridge top
*Phacelia fremontii Torrey, Fremont’s Phacelia U, throughout
Phacelia curvipes S. Watson, Curve-stem Phacelia R
*Phacelia distans Benth., Common Phacelia, Distant Phacelia A, throughout
Pholistoma membranaceum (Benth.)Constance, White Fiesta Flower R, on e. ridge top

Lamiaceae Mint Family
Salizaria mexicana Torrey, Mexican Bladder Sage NC FC
*Salvia columbariae Benth. Chia C
*Salvia dorii (Kellogg) Abrams, Purple Sage A

Loasaceae Stickleaf Family
*Mentzelia veatchiana Kellogg, Veatch’s Blazing Star FC

Onagraceae Evening Primrose Family
Camissona boothii (Douglas) Raven, Booth’s Sun Cup (Evening Primrose) FC at s. end of gap in sandy soil
Camissona campestris (E. Greene) Raven, Mojave Suncup R
Camissona cf. pallida (Abrams) Raven, Paleyellow Suncup FC, scant, returned
Camisonia strigulosa (Fischer & C. Meyer) Raven, Sandysoil Suncup C

Papaveraceae Poppy Family
Eschscholzia minutiflora S. Watson, Small-flowered Poppy, Pygmy Poppy R

Polemoniaceae Phlox Family
*Gilia sp. R, mostly along road shoulder
Gilia cana (M.E. Jones) A.A. Heller, Showy Gilia C, wash bottom
Leptosiphon breviculus (Benth.) J.M. Porter & L.A. Johnson, Mojave Linanthus
R
Linanthus parryae (A. Gray) E. Greene, Sandblossoms C, lower, sandy areas
Loeseliastrum matthewsii (A. Gray) S. Timbrook, Desert Calico NC FC in n. wash area

Polygonaceae Buckwheat Family
Chorizanthe brevicornu Torrey, Brittle Spineflower U, at 0.2 mi. n. of Bob’s Gap & w. of Bob’s Gap Road
*Eriogonum davidsonii E. Greene, Davidson’s Buckwheat FC in wash bottom
*Eriogonum fasciculatum Benth. var. foliolosum (Nutt.) Abrams, California Buckwheat, Eastern Mojave Buckwheat A in wash areas
Eriogonum fasciculatum Benth. var. polifolium (A. DC.) Torrey & A. Gray, California
C, mostly on ridges
Eriogonum pusillum Torrey & A. Gray, Yellowturbins U

Ranunculaceae Buttercup Family
*Delphinium sp. U, throughout

Rosaceae Rose Family
*Prunus fasciculata (Torrey) A. Gray, Desert Almond A
*Purshia glandulosa Curran, Desert Bitterbrush FC

Rubiaceae Bedstraw Family
*Galium sp. FC

Scrophulariaceae Snapdragon Family
Castilleja plagiotoma A. Gray, Mojave Indian Paintbrush NC FC, w. of Bob’s Gap on Holcomb Ridge
Mimulus bigelovii (A. Gray) A. Gray, Bigelow’s Monkeyflower U

Solanaceae Nightshade Family
*Lycium andersonii A. Gray, Water Jacket C
Lycium cooperi A. Gray, Cooper’s Box-thorn, Peach Thorn U

Zygophyllaceae Caltrop Family
Larrea tridentata (DC.) Cov., Creosote Bush NC FC on ridge w. of wash

Monocotyledons:

Liliaceae Lily Family
Allium fimbriatum S. Watson, Fringed Onion C
Calochortus kennedyi Porter, Desert Mariposa Lily C, ridgetop e. & w. of wash
Dichelostoma capitatum (Benth.) Alph Wood, Blue Dicks FC on e. ridge top
Hesperoyucca whipplei Torrey, Chaparral Yucca FC on ridges
Muilla maritima (Torrey) S. Watson, Common Muilla, Sea Muilla R, on s. side of ridge w. of Bob’s Gap
Yucca brevifolia Engelm., Joshua Tree C, mostly in s. area
Zygadenus brevibracteatus (N.E. Jones) H.M. Hall, Desert Deathcamas FC on ridgetop e. of wash

Poaceae Grass Family
Achnatherum speciosum (Trin. & Rupr.) Barkworth, Desert Needlegrass A
*Bromus madritensis L., ssp. rubens (L.) Husnot, Foxtail Chess, Red Brome C, mostly in s. area
*Bromus tectorum L., Downy Brome, Cheat Grass A
*Poa secunda J.S. Presl, One-sided Bluegrass, Sandberg Bluegrass ? U

Additional plants recorded by other collectors:
1. Canbya candida C. Parry, White Pygmy Poppy
Orlando Mistretta, Mark Elvin March 30, 1995 Mouth of Bobs Gap, e. side of wash

All of the following taken from Robert Gustafson & Gary Wallace on April 26, 1982, elev. 975 m., at 3.5 mi. s. of Pearblossum Hwy.
This is 248 m. lower than the study area and directly n. of it. It is offered here because of its close proximity.
1. Canbya candida C. Parry, White Pygmy Poppy
2. Abronia pogonantha Heimerl, Mojave Sand Verbena
3. Arabis perennans S. Watson
4. Cryptantha decipiens (M.E. Jones) A.A. Heller
5. Cryptantha micrantha (Torrey) I.M. Johnston, Redroot Cryptantha
6. Lupinus formosus Greene var. formosus, Western Lupine, Summer Lupine
7. Lupinus sparsiflorus Benth.
8. Mentzelia albicaulis Hook.
9. Mimulus fremontii (Benth.) A. Gray, Fremont’s Monkeyflower
10. Nemacladus longiflorus A. Gray var. breviflorus McVaugh, Longflower Threadplant

Plants in order of abundance:
Made in the field on December 11, 2008
List made at jnct. of 165 th Street & Bob’s Gap Road.
Compiled from plants on both sides of each of the above roads, in the wash bottom and on ridge slopes.

1. Bromus tectorum
2. Bromus madritensis ssp. rubens
3. Ericameria nauseosa
4. Eriogonum fasciculatum foliolosa
5. Prunus fasciculata
6. Achnatherum speciosum
7. Eriodictyon trichocalyx
8. Atriplex cansecens
9. Ephedra viridis
10. Eriogonum fasciculatum var. polifolium
11. Ambrosia acanthicarpa
12. Stephanomeria sp.
13. Ephedra nevadensis

3. Devil’s Punchbowl Natural Area/County Park

Collection Dates:
August 15, 17, 22, 26, 2005
June 18, 2006
May 5, 8,12, 13, 2008
June 4, 9, 10, 2008

Location:
Los Angeles County, The Park headquarters is located at the east terminus of Devil’s Punchbowl Rd., 28000 Devil’s Punchbowl Rd., Pearblossom, 9353
Map Quad: Valyermo
Lat: 34 deg. 24’ 50 “ N
Long: 117 deg. 51’ 10” W
Township: 4N
Range: 9W
Section: 19
Elevation: 4160-6374 ft. (1268-1943 m.)
Regional description:
Plant communities: Pinyon-Juniper Woodland, montane coniferous

P Recorded by Punchbowl staff only
S Recorded by Swinney only
C Determined by Tom Chester by observation

Hol. Cyn. Holcomb Canyon
PB Cyn. Punchbowl Canyon
SR Cyn. Sand Rock Canyon

__ taxa listed

Species List:

Ferns & Their Allies:

Pteridaceae Brake Family
Cheilanthes covillei Maxon, Coville’s Lipfern C, in s. area, large rocks, Holcomb Cyn.
Pellaea mucronata (D. Eaton) D. lEaton ssp. californica (Lemmon) Windham, Bird’s-foot Fern P
Pentagramma trangulalris (Kafl.) G. Yatskievych, M.D. Windham & E. Wollenweber ssp. triangularis, Goldback Fern R, Sand Rock Cyn.

Gymnosperms:

Cupressaceae Cypress Family
Calocedrus decurrens (Torr.) Florin, Incense-Ceder U, higher areas, Holcomb Cyn., lowest elev. at 4200 ft. in lower Holcomb Cyn. near Big Rock Cr.
Juniperus californica Carriere, California Juniper N., lower elevatioins
Juniperus osteospermae (Torr.) Little, Utah Juniper ? S R, 1 on PB Cyn. Loop Tr.

Ephedraceae Ephedra Family
Ephedra viridis Cov., Green Ephedra FC

Pinaceae Pine Family
Abies concolor (Gord. & Glend.) Lindl., White lFir N R, slope of pk. # 6374
Pinus coulteri D. Don, Coulter Pine U, upper PB Cyn. to Park’s s.w. boundary
Pinus jeffreyi Brev. & Balf., Jeffrey Pine FC, lowest elev. at 4280 ft. in upper E. Fk. of PB Cyn. (1 tree), in the higher ares at pk. # 6374
Pinus lambertiana Douglas, Sugar Pine S R, at base of pk. # 6374
Pseudotsuga macrocarpa (Vasey) Mayr, Douglas Fir S C, higher elevations, upper Hol. & PB Cyns.

Dicotyledons:

Anacardiaceae Sumac or Cashew Family
Rhus trilobata Nutt. Squaw Bush, Basket Bush C throughout

Apiaceae Carrot Family
Lomatium mohavense (J. Coult. & Rose) J. Coult. & Rose, Mojave Wild Parsley
FC throughout
Oreonana vestita (S. Watson) Jeps., Woolly Mountain-parsly S R, peak # 6374, from base to pk.

Apocynaceae Dogbane Family
Apocynum cannabinum L., Indian Hemp R, lower PB Cyn.
Cycladenia humilis Benth. var. venusta (Eastw.) Munz, Showy Cycladenia, Sacremento Waxydogbane R, n.-facing slope of pk # 6374 at s.e. corner of park

Asclepiadaceae Milkweed Family
Ascleplis erosa Torr., Desert Milkweed R, flats near Nature Center, along S.F. Tr. in w. area
Asclepias fascicularis Decne., Narrowl-leaf Milkweed U, Hol. & PB Cyns., open flats s. of Nature Center

Asteraceae Sunflower Family
Agoseris retrorsa (Benth.) Greene, Mountain Dandelion R, base of pk. # 6374, EFk. of PB Cyn.
Ambrosia acanthicarpa Hook., Bur-ragweed S?* R, lower PlB Cyn.
Anisocoma acaulis S R, lower WFk. of PB Cyn., just n. of Park
Antheropeas wallacei (A. Gray) Rydb., Wallace’s Woolly Daisy R
Artemisia douglasiana Besser, Mugwort S U, lowest elevations in PB & Hol. Cyns.
Artemisia dracunculus L., Wild Taragon S
Artemisia ludoviciana Nutt., Mountain Mugwort S R, PB Cyn.
Artemisia tridentata Nutt., Great Basin Sagebrush A
Baccharis salicifolia (Ruiz & Pavon) Pers., Mule Fat C, Hol. & PlB Cyns.
Brickellia californica (Torr. & A. Gray) A. Gray, California Brickellbush C, throughout
Brickellia desertorum Coville, Desert Brickellbush R, Hol. Cyn., s. of SF Tr.
Brickelia nevinii A. Gray, Nevin’s Brickellia ? S R, Hol. & PB Cyns.
Chaenactis fremontii S R, lower WFk. of PB Cyn., just n. of Park
Chaenactis santolinoides Greene Santolina Pincushion ? S U, area from SF Tr. to pk. # 6374
Chaenactis stevioides S R, lower WFk. of PB Cyn., just n. of Park
Cirsium occidentale (Nutt.) Jeps., Cobwebby Thistle U, scattered throughout
Conyza canadensis (L.) Cronq., Canadian Horseweed S R, lower Hol. Cyn.
Corepsis bigelovii S R, PB Cyn.
Corethrogyne filaginifolia (Hook. & Arn.) Nutt., California-aster S U, lower Hol. Cyn.
Ericameria cuneata (A. Gray) McClatchie, Wedgel-leaf Golden Bush FC, upper Hol. Cyn. Ericameria linearifolia (DC.) Urb. & J. Wussow, Narrow-leaf Golden Bush
A, thoughout
Ericameria nauseosa (Pallas) G.L. Nesom & Baird ssp. nauseosa, Common Rabbitbrush
R, higher elev’s., pk. # 6374
Erigeron foliosus Nutt., Leafy Fleabane (Daisy) R, PB Cyn.
Erioplhyllum confertiflorum (DC.) A. Gray var. confertiflorum, Golden Yarrow
C, throughout
Eriophyllum pringlei A. Gray, Pringle’s Woolly Sunflower U, loser elevations
Gnaphalium palustri S R, EFk. of PB Cyn.
Lactuca seriolla L., Prickly Lettuce * R
Layia glandulosa (Hook.) Hook. & Arn., White Tidyl-tips FC, lower PB & Hol. Cyns.
Lessingia glandulifera A. Gray var. glandulifera, Sticky Lessingia ? C, throughout
Logfia californica R, EFk. of PB Cyn.
Malacothrix clevelandii S R, EFk. of PB Cyn.
Malacothrix glabrata S R, lower WFk. of PB Cyn., just n. of Park

Microseris lindleyi (DC.) A. Gray, Lindley’s Silverpuffs FC, lower Hol. & PB Cyns.
Pseudognaphalium sp. # 8511 U, lower Hol. Cyn.
Pseudognaphallium canescens (DC.) W.A. Weber ssp. beneolens (Davidson) Kartesz, Fragrent Everlasting S FC, Hol. Cyn.
Rafenesquia californica S U, lower PB Cyn., just n. of Park boundary
Senecio flaccidus Less. var. douglasiana (DC.) B. Turner & T. Barkley, Shrubby Butterweed S R, lower Hol. Cyn.
Solidago californica Nutt., California Goldenrod S U, PB Cyn.
Sonchus oleraceus L., Common Sow Thistle S R, SR Cyn.
Stephanomeria S
Stephanomeria S
Stylocline #8535 R, SR Cyn.

Betulaceae Birch Family
Alnus rhombifolia Nutt., White Alder FC, Hol. & PB Cyns., primarily seedlings in PB Cyn. (2005), large trees in SR Cyn., s. of Park.

Boraginaceae Borage Family
Amsinckia tesellata S R, EFk. of PB Cyn.
Cryptantha FC, SR Cyn.
Cryptantha SR Cyn.
Cryptantha circumscissa (Hook. & Arn.) I.M. Johnston, Cushion Cryptantha
FC scattered throughout
Cryptantha intermedia (A. Gray) Greene, Clearwater Cryptantha FC throughout
Cryptantha muricata (Hook & Arn.) Nelson & J.F. Macbr., Prickly (Pointed) Cryptantha
FC, lower elev’s.
Cryptantha pterocarya U, PB Cyn., just outside n. boundary
Pectocarya #8536 S R, SR Cyn.
Pectocarya setosa S U, lower WFk. of PB Cyn., just outside Park

Brassicaceae Mustard Family
Arabis pulchra (L.) Benth., Tower Mustard, Rockcress R
Caulanthus amplecxicaulis R, lower HCyn.,
U, SF Tr. at pk. # 6374 to summit, e. boundary of park at SF Tr.
Descurania pinnata S U, lower WFk. PB Cyn., just outside Park
Erysimum capitatum (Douglas) Greene ssp. capitatum, (Western) Sanddune Wallflower
U, throughout
Sisymbrium *,P
Sisymbrium altissimum L., Jim Hill Mustard, Tall Tumble Mustard ? U, SR Cyn.
Stanleya pinnata (Pursh) Britton var. pinnata, Desert Prince’s Plume U, lower Hol. Cyn.
Thlaspi 1 plant, PB Cyn.
Thysanocarpus laciniatus Nutt., Lace Pod, Mountain Fringepod C

Cactaceae Cactus Family
Opuntia basilaris Engelm. & J. Bigelow var. brachyclada, Beaver Tail Cactus
R, near s.F Tr. in e. area, lower Hol.Cyn., scattered throughout
Opuntia basilaris Engelm. & J. Bigelow var. brachyclada (D. Griffiths) Munz, Short-joint Beaver-tail ? R, lower Hol. Cyn.
Opuntia phaeocantha Engelm., Prickly Pear ? U, lower Hol. Cyn., just e. of park boundary on SF Tr.

Campanulaceae Bellflower Family
Nemacladus

Caprifoliaceae Honeysuckle Family
Lonicera interupta Benth., Chaparral Honeysuckle U
Lonicera subspicata Hook. & Arn. var. denudata, Southern Honeysuckle ?
C
Sambucus nigra L. ssp. canadensis (L.) R. Bolli, Blue Elderberry S R, 1 near s.w. boundary

Caryophylaceae Pink Family
Arenaria macradenia S. Watson ssp., Desert Sandwort, Mojave Sandwort
R, E. Fk. of lower PB Cyn.
Minuartia douglasii S C, lower elevations is e. area
Silene U, pk. # 6374 area
Silene antirrhina S R in lower PB Cyn.

Chenopodiaceae Goosefoot Family
Chenopodium #8494 R, Hol Cyn.
Chenopodium botrys L., Jerusalem Oak *S R, Lower Hol. & PB Cyns.
Chenopodium californica (S. Watson) S. Watsjon, California Goosefoot ?
Salsola tragus L., Russian Thistle, Tumbleweed *P

Convolvulaceae Morning Glory Family
Calystegia peirsonii S C, lower HCyn.

Crassulalceae Stonecrop Family
Dudleya lanceolata (Nutt.) Britton & Rose, Narrow-leaved Live Forever, Lanceleaf Dudleya
U throughout
Dudleya cymosa (Lemaire) Britton & Rose ssp., Dudleya ? C, in upper Hol. Cyn.

Cuscutaceae Dodder Family
Cuscuta californica Hook. & Arn., California Dodder ? C, Parasite on Eriogonum sp. & Quercus sp
Cuscuta ? S FC, PB Cyn., Parasite on Datisca glomerata & Salix lasiolepis

Datiscaceae Datisca Family
Datisca glomerata (C. Presl.) Baillon, Durango Root A in PB Cyn., FC in lower Hol. Cyn.

Ericaceae Heath Family
Arctostaphylos glauca Lindl., Bigberry Manzanita A
Arctostaphylos # 8531, Manzanita S C, in highest elevs. of Park

Euphorbiaceae Spurge Family
Chamaesyce albomarginata (Torr. & A. Gray) Sm., Rattlesnake Weed
C

Fabaceae Pea Family
Astragalus coccineus Brandegee, Scarlet Milk-vetch P
Astragalus douglasii (Torr. & A. Gray) A. Gray var. douglasii, Jacumba Milk-vetch
FC, s.w. area of Park
Astragalus P
Lathyrus vestitus Nutt. var. vestitus, Common Pacific Pea, Chjaparral Pea
U
Lotus heermannii (Durand & Hilg.) Greene, Silky-lotus S U, low. Hol. & PB. Cyns.
Lotus oblongifolius (Benth.) Greene var. oblongilolius, Stream-bank Lotus
S U, in low. Hol. & PB Cyns.
Lotus unifoliatus Spanish Lotus/Clover A, in PB Cyn.
Lotus scoparius (Nutt.) Ottley var. brevialatus, Deer Weed FC
Lotus strigosus (Nutt.) Greene, Hairy Lotus, Strigose Lotus (Bird’s-foot Trefoil)
U
Lotus
Lulpinus bicolor S U, lower WFk. of PB Cyn., just n. of Park
Lupinus concinus J. Agardh, Bajada Lupine FC
Lupinus formosus Greene var. formosus, Western Lupine U
Lupinus subvexus C.P. Sm. var. subvexus, Chick Lupine, Valley Lupine
P
Lupinus P
Trifolium # 8540 R, SR Cyn.

Fagaceae Oak Family
Quercus chrysolepis Liebm., Canyon Oak, Golden cup Oak U, above 4400 ft. ?
Quercus john-tuckeri K. Nixon & C.H. Muller, Scrub Oak, Tucker’s Oak A

Garryaceae Silk Tassel Family
Garrya flavescens S. Watson, Silk-tassel Bush FC, above 4500 ft.?

Geraniaceae Geranium Family
Erodium cicutarium (L.) L’Her., Redstem (Filaree) Stork’s Bill FC

Grossulariaceae Gooseberry Family
Ribes #8500 FC, upper Hol. Cyn.

Hydrophyllaceae Waterleaf Family
Eriodictyon trichocalyx A.A. Heller, Hairy-fruited Yerba Santa, Sticky-leaved Yerba Santa
A
Nama californicum S R, E & WFks. of PB Cyn.
Phacelia curvipes S. Watson, Curve-stem Phacelia U, PB Cyn.
Phacelia distans Benth., Common Phacelia FC
Phacelia fremontii Torrey, Fremont’s Phacelia U
Phacelia imbricata Greene ssp. imbricata, Imabricate Phacelia C
Phacelia lemmonii S R, EFk. of PB Cyn.
Phacelia longipes A. lkGray, Long-stalk Phacelia U, lower Hol. & PaB Cyns.
Phacelia P
Phacelia P lower E. Fk. of PB Cyn.
Phacelia S S. Flk. Tlr. & Hol. Cyn.
Phacelia # 8518 R, lower Hol. Cyn.
Phacelia # 8517 R, lower Hol. Cyn.

Lamiaceae Mint Family
Monardella breweri A. Gray, Pennyroyal U, common locally south of Nature Center
Monardella australis Abrams, Southern Mountain Monardella S C, in s. area at highest elevs.
Monardella linoides A Gray, Flaxleaf Monardella S R, pk. # 6374
Salazaria mexicana Torr., Mexican Bladder Sage S R in lower E. Fk. of PB Cyn.
Salvia apiana Jeps., White Sage C, lower n. areas
Salvia columbariae Benth., Chia A, lower areas
Salvia dorii (Kelloff) Abrams ssp. dorrii var. pilosa l(S. Gray) Strachan & Reveal, (Desert)
Purple Sage C in EFk. of PB Cyn., U in WFk. of PB Cyn., just n. of Park

Loasaceae Loasa or Stick-leaf Family
Mentzelia albicaulis S A, lower WFk. of PB Cyn., just outside Park
Mentzelia laevicaulis (Hook.) Torr. & A. Gray, White-stem Mentzelia U, SFk. Tr. just east of Park, lower Hol. Cyn.
Mentzelia veatchiana Kellogg, Veatch’s Blazing Star A
Mentzelia P

Nyctaginaceae Four O’Clock Family
Abronia pogonantha Heimer, Mojave Sand Verbena P R
Mirabilis laevis (Benth.) Curran, Bigelov’s Four-O’Clock FC

Oleaceae Olive Family
Fraxinus velutina Torr., Velvet Ash P R Forestiera pubescens Nutt., Desert Olive, Stretchberry FC, PB, Hol. Cyn.

Onagraceae Evening Primrose Family
Camissonia # 8519 R, lower Hol. Cyn.
Camissonia #8543 R, SR Cyn.
Camissonia bistorta (Torr. & A. Gray) Raven, Sun cup FC
Camissonia boothii (Douglas) Raven, Sun Cup S U, lower Hol. & PB Cyns. along SF Tr. in s.w. area of Park
Camissonia campestris (Greene) Raven, Field Sun Cup P
Camissonia P
Camissonia confusa S R, lower WFk. of PB Cyn., just outside Park
Camissonia micrantha var. jonesii
The listing by DPB staff of Oenothera micrantha var. jonesii, has been placed in 4 different species
Camissonia
Clarkia xantiana A. Gray, Kern Canyon Clarkia R, 1 pop. in lower Hol. Cyn., 1 pop. outside Park’s s.w. boundary along S.F. Tr., 1 pop. in EFk. of PB Cyn.
Clarkia sp. P R, lower E. Fk. of PB Cyn.
Epilobium canum (Greene) Raven ssp. latifolium (Hook.) Raven, Mountain California-fuschia, Hummingbird Trumpet N C
Epilobium brachycarpum C. Presl., Autumn Willowweed, Tall Annual Willowherb U, lower Hol.Cyn.
Gayophytum S FC in south to summit of pk. # 6374
Oenothera californica (S. Watson) S. Watson, California Evening Primrose
FC, mostly s. & s.w. of Visitor Center

Orobancaceae Broomrape Family
Orobanche # 8492 S R, e. of Hol. Cyn. near S.F. Tr.
Orobanche S R, 2 plants s. of Visitor Center in sandy soil, near Eriogonum fasciculatum var. polifolium

Papaveraceae Poppy Family
Argemone munita Durand & Hilg. Prickly Poppy P R
Ehrendorferia chrysantha (Hook. & Arn.) Kylander, Golden Ear Drops
S R, lower Hol. Cyn. near BR Creek

Platanaceae Sycamore Family
Platanus racemosa Nutt., Western Sycamore FC, riparian habitat

Polemoniaceae Phlox Family
Eriastrum densifolium (Benth.) Mason ssp. elongatum (Benth.) H. Mason, Woolly Star ?
Hol. Cyn.
Eriastrum U
Gilia latiflora (A. Gray) A. Gray, Davy Gilia C
Gilia sinuata Benth., Douglas ex Benth., Rosy Gilia P
Gilia P
Lepltosiphon brevicaulis S U, lower WFk of PB Cyn., just n. of Park
Leptosiphon ciliatus (Benth.) Jeps. ssp. cilliatus, Whisker-brush (broom) ?
P
Linanthus bigelovii S U, PB Cyn., just n. of Park boundary
Linanthus parryae (A. Gray) Greene, Parry Linnanthus, Sandblossums
R
Loeseliastrum mathewsii (A. Gray) S. Timbrook, Desert Calico, Ghost Flower
FC
Phlox gracilis Greene, N,P C in PB Cyn., just n. of Park boundary
Saltugilia grinnellii (Brand) L.A. Johnson ssp. grantii (Brand) L.A. Johnson, Grand Gilia
S R, PB Cyn., just n. of Park boundary

Polygonaceae Buckwheat Family
Chorizanthe watsonii Torr. & A. Gray, (Watson’s) Fivetooth Spineflower ?
FC
Eriogonum davidsonnii Greene, Davidson’s Buckwheat ? S U, pk. # 6374, lower EFk. of HCyn.

Eriogonum fasciculatum Benth. var. polifolium (Nutt.) Abrams, California Buckwheat
A, throughout
Eriogonum pusillum Torr. & A. Gray, Yellow Turbins FC, throughout
Eriogonum P
Eriogonum #8485 U, PB Cyn.
Eriogonum gracile Benth., Slender Buckwheat S lower Hol. Cyn.,near Visitor Center
Eriogonum nudum Benth. ssp. pauciflorum (S. Watson) Munz, Naked Buckwheat S R, upper Hol.Cyn. s. area to pk. # 6374
Eriogonum nudum Naked Buckwheat # 8530 S FC, pk. # 6374
Eriogonum pusillum S U, lower HCyn.
Eriogonum saxatile S. Watson, Rock Buckwheat S R, in upper elevs. in the south
Oxytheca parishii C. Parry var. Parish’s Oxytheca S FC along S. Fk. Tr. near pk. # 6374
Pterostegia drymarioides Fischer & C. Meyer, Woodland Pterostegia
U, SR Cyn.

Portulacaceae Purslane Family
Claytonia S U
Claytonia parviflora Hook. Narrow-leaved Miner’s Lettuce ? C
Claytonia perfoliata Willd. ssp. perfoliata, Miner’s Lettuce U
Cistanthe monandrum (Nutt.j) Hershkovitz, San Cress U

Ranunculaceae Buttercup Family
Aquilegia formosa Fischer, Western (Showy Columbine) R, upper Hol. Cyn.
Clematis ligusticifolia Nutt., Western Vergin’s Bower FC, riparian
Delphinum parishii A. Gray ssp. parishii, Parish’s Larkspur FC, mostly n. areas, lower Hol. & PB Cyn’s.

Rhamnaceae Buchthorn Family
Rhamnus illicifolia S A in lower HCyn.

Rosaceae Rose Family
Cercocarpus montanus Raf. var. glabber (S. Watson) F.L. Martin, Birch-leaf Mountain Mohogany C, throughout
Cercocarpuls ledifolius Nutt., Curl-leaf Mountain Mohogany FC, southern, higher elev’s. to pk. # 6374
Potentilla glanculosa Lindl., Sticky Cinquefoil FC, PB cyn.
Potentilla glandulosa Lindl. ssp. reflexa (Greene) Keck, Sticky Cinquefoil
FC, PB Cyn., riparian
Prunus fasciculata (Torr.) A. Gray var. fasciculata, Desert Almond U, n. areas
Purshia glandulosa Curran, Antelope Brush, Bitterbrush FC, mostly n. areas

Rubiaceae Madder Family
Gallium angustifolium Nutt. ex Gray ?, Narrow-leaved Bedstraw R
Galium angustifolium Nutt. ssp. angustifolium, Shrubby Bedstraw, Narrow-leaved Bedstraw C
Galium aparine L., Common Bedstraw * C
Galium sp. P
Galium # 8537 R

Salicaceae Willow Family
Populus balsamifera L. ssp. trichocarpa (Torr. & A. Gray), Black Cottonwood
U, s. Hol Cyn.
Populus fremontii S. Watson ssp. fremontii, Fremont Cottonwood C, Hol. & PB Cyns.
Salix exigua Nutt., Slender Sandbar Willow, Narrow-leaf Willow
U C, Hol. & PB Cyns., mostly in n. areas
Salix lasiolepis Benth., Arroyo Willow ?U C, Hol. & PBCyns.
Salix sp. S C, Hol. & PB Cyns.

Saxifragaceae Saxifrage Family
Heuchera Alumroot # 8497 FC in upper Hol. Cyn.
Heuchera Alumroot # 8499 R in upper Hol. Cyn.
Lithofragma tenellum Nutt., Slender Woodland Star C R

Scrophulariaceae Snapdragon Family
Castilleja linariifolia Benth., Linear-leaved Paintbrush R, common only in PB Cyn.
Castilleja angustifolia (Nutt.) G. Don, Desert or Northwestern Indian Paint-brush ?P
Castilleja plagiotoma A. Gray, Mojave Indean Paintbrush P R
Castilleja # 8478 FC, E. Fk. of PB Cyn.
Collinsia sp. R, PB Cyn., just n. of Park boundary
Keckiella ternata (Torr.) Straw var. ternata, Whorledleaf Keckiela, Scarlet Keckiella C
Mimulus # 8520 R, lower Hol. Cyn.
Mimulus # 8487 R, PB Cyn.
Mimulus aurantiacus var. pubescens R, Hol. cyn.
Mimulus cardinalis Benth., Scarlet Monkeyflower FC, riparian
Mimulus fremontii (Benth.) A. Gray, Fremont’s Monkeyflower U
Mimulus guttatus DC., Common Monkeyflower S U, W. Fk. of upper PB Cyn., upper Hol. cyn.
Mimulus parishii Greene, Parish’s Monkeyflower S U, dry, open slopes
Mimulus pilosus (Benth.) S. Wats., False Monkeyflower S FC, PB Cyn.
Penstemon centranthifolia (Benth.) Benth., Scarlet Bugler S FC throughout
Penstemon rostriflorus Kellogg,Beaked Penstemon ? S U
Penstemon grennellii Eastw., Grinnelll’s Beardtongue S U

Simuarbaceae
Ailanthus altissima (Miller) Swingle, Tree of Heaven S R, just outside Park at lower Hol. & BR Creek jct.

Sterculiaceae Cacao Family
Fremontodendron californicum (Torr.) Cov. ssp. californicum, California Fremontia or Flannelbush A, throughout, except for highest elevs.

Tamaricaceae Tamarisk Family
Tamarax ramosissima Ledeb, Tamarix, Saltcedar ? S U, Hol. cyn., E. Fk. of PB cyn.

Urticaceae Nettle Family
Urtica dioica L. ssp. holosericia (Nutt.) Thorne, Hoary or lStinging Nettle
S U, upper Hol. Cyn.

Violaceae Violate Family
Viola pinetorum Greene ssp. pinetorum, Goosefoot Yellow Violet U, most common at higher elevations

Viscaceae Mistletoe Family
Phoradendron villosum (Nutt.) Nutt., Oak Mistletoe S on Quercus john- tuckeri

Monocotyledons:

Cyperaceae Sedge Family
Carex # 8480 C, PB Cyn.
Carex # 8514 FC, lower Hol. Cyn.
Carex alma L., Sturdy Sedge FC, Hol. & PB Cyns.
Carex fracta Mackenzie, Fragile Sheath Sedge ?S U, lower Hol. Cyn.

Juncaceae Rush Family
Juncus balticus Willd. FC, lower Hol. Cyn.
Juncus arcticus Willd. ssp. littoralis (Engelm.) Hulten, Wire Rush, Mountain Rush ?
lower Hol. Cyn.
Juncus bufonius L., Toad Rush S R, lower w. Fk. PB Cyn.
Juncus dubius Engelm., Mariposa Rush, Questionable Rush U A, Hol. & PB Cyns.

Liliaceae Lily Family
Allium S U, pk. # 6374 area
Calochortus catalinae S. Watson, Calalina Mariposa Lily P U throughout, except commmon in lower Hol. & PB Cyns.
Calochortus kennedyi, Porter var. kennedyi, Desert Mariposa Lily FC, most common in lower elevs.
Calochortus palmeri var. palmeri S U, lower WFk. of PB Cyn., just n. of Park
Dichelostoma capitatum S U, lower WFk of PB Cyn.
Hesperoyucca whipplei Torr., Whipple Yucca, Our Lord’s Canfle
U A
Yucca brevifolia Engelm. Joshua Tree U, n. areas

Poaceae Grass Family
Bromus diandrus Roth, Ripgut Brome *S U, E. Fk. PB Cyn., lower Hol. Cyn
Bromus hordeaceus L., Soft Chess *S R, upper E. Fk. of PB Cyn.
Bromus tectorum L., Downy Brome * A, througho;ut
Bromus madritensis L. ssp. rubens (L.) Husnot ? *S U
Achnatherum # 8528 FC pk. # 6374
Achnatherum hymenoides (Roemer & Schultes) Barkworth, Indian Ricegrass
S U, s.w. of Visitor Center, E. Fk. of PB Cyn.
Achnatherum parishii Vasex C, pk. # 6374
Achnatherum speciosum (Trin. & Rupr.) Barkworth, Desert Needle Grass
N C
Elymus elymoides (Far.) Swezey ssp. elymoides, California Squirreltail
N FC
Muhlenbergia asperifolia (Nees & Meyer) L., Parodi, Scratchgrass
S R, lower Hol. cyn.
Muhlenbergia rigens (Benth.) A. Hitchc., Deer Grass S C in Hol. & PB cyns
Muhlenbergia californica Vasey, Mat Muhly R, several in lower Hol. Cyn.
Poa praetensis L. ssp. pratensis, Kentucky Bluegrass ? S
Poa secunda J.S. Presl., One-sided Blue Grass A
Polyplogon monspeliensis (L.) Desf., Annual Beard Grass, Rabbitsfoot Grass
* U, riparian
Vulpia macrostachys (Nutt.) Benth. var. macrostachys, Small Fescue
?S FC
Vulpia myuros (L.) C.C. Gmel S U, scattered throughout

Other records:


4. San Gabriel Canyon’s Azusa Entrance

Collection Dates:
March 21, 1969
April 22,29 1969
February 16, 1998
May 4,9,15, 1998
May 10,25, 2000
April 7, 2008
November 30, 2008
December 2,4,6 2008
January 10,19, 2009
February 20, 2009
March 6,11,12,13,16,19,20,31, 2009
Apr. 3,7,13,16,17,21, 2009
May 8, 2009
June 12,27, 2009
Location:
Los Angeles County,
Southern boundary -North side of the 210 Frwy.
Northern boundary - Fish Canyon entrance, Gun Club southern boundary, north margin of San Gabriel Canyon bottom as it interfaces the San Gabriel Mtn. south- facing slope.
Western boundary - The current west bank of the San Gabriel River parallel to Encanto Drive in Duarte which terminates into Fish Canyon Rd.
Eastern boundary - The west boundary of the Gravel Pit adjacent & west of Irwindale Blvd., from the 210 Frwy to Foothill Blvd. in Azusa. The west boundary of the active Owl Rock Gravel Pit Mining operation, north of Foothill Blvd. The west side of Hwy 39 until it reaches the San Gabriel Mt. Information Center on Hwy. 39, at which point the north-facing cliffs to the south of hwy. 39 become the boundary all the way to El Encanto Rivers & Mountains Conservancy.
A separate plant inventory of the above conservancy was begun in the spring of 2008 by the author.

Some of the older records are not within the current boundary, but are located within former river-bed areas now altered by development.
Map Quad: Azusa
Township: 1 N
Range: 10 W
Sections: 23,
Elevation: 550-860 ft. (168-256 m.)
Location description: This area is defined by two specific areas, the river channel which is periodically flooded with water, and the dry flood-plain, bordering the channel. The area extends from the I-210 Frwy in the south to the El Encanto Rivers And Mountains Conservancy in the upper north-east area, where the canyon drastically narrows.
Plant communities:
River channel - Before construction of Morris and San Gabriel Dams in the 19__? the water flow was continuous. (?) The present agreement with the Vector Control District regarding water flow within the channel, calls for intermittent release of water during the warmer months to restrict the development of Buffalo Fly gnat larval development in the stream. The yearly schedule of water release greatly impacts the riparian species diversity from year to year.
Flood Plain - Dry, rock strewn alluvial deposits with sandy-gravelly soil with chaparral and coastal sage scrub plant communities.

Species List:
*Collected in 2008,2009 - awaiting verification/identification
Intended collection of all species marked NC, during 2009. There are 322 species represented in this list. About eight have not yet been added, ID’s pending.

Ferns & Their Allies:

Pteridaceae
Adiantum capillus-veneris L., Venus-hair Fern, Common Maidenhair R, one population at spring/seep n. of A.N.F. Visitor Center on s. road shoulder
*Pellaea andromedifolia (Kaulf.) Fee, Coffee Fern, Coffee Cliffbrake R
*Pellaea mucronata (D. Eaton) D. Eaton , Bird’s-foot Fern, Birdfoot Cliffbrake ?
R, 0.7 mi. upstream from confluence of Fish Cyn., rocky
*Pentagramma triangularis (Kaulf.) G. Yatskievych, M.D. Windham & E. Wollenweber ssp. triangularis Goldenback Fern U along the n. side of the river channel at the base of the s.-facing slopes in upper n.e. area

Selaginaceae Spike-moss Family
*Selaginella bigelovii Underw., Little Club moss, Bushy Spikemoss U in upper n.e. area, mostly at base of s.facing slopes & cliffs on n. side of river channel

Gymnosperms:

Cupresaceae Cypress Family
*Juniperus californicus Carriere, California Juniper R, 12 plants between Foothill Blvd. & I-210 Frwy., to the e. of the river channel; 1 plant in far n.w. area near Encanto Rd. & Van Tassel confluence.

Dicotyledons:

Aceraceae Maple Family
Acer macrophyllum Pursh, Big-leaf Maple NC R, far n.e. area

Aizoaceae Fig-Marigold Family
*Tetragonia tetragonioides (Pallas) Kuntze, New Zealand Spinach R, 1 plant on e. side of main channel in sandy soil in burn area of 2008, __ mi. n. of Foothill Blvd.

Amaranthaceae Amaranth Family
*Amaranthus R
*Amaranthus albus L., Prostrate Pigweed U
*Amaranthus blitoides S. Watson, Mat Amaranth ? U
*Amaranthus retroflexus L., Red-rooted Amaranth R, near Puente Largo RR Bridge along tr.

Anacardiaceae Sumac Family
Malosma laurina (Nutt.) Abrams, Laurel Sumac, Laurel-Leaf Sumac C
*Rhus integrifolia (Nutt.) Brewer & S. Watson, Lemonadeberry, Lemonade Sumac A, most abundant in the s. area
*Rhus ovata S. Watson, Sugar Bush, Sugar Sumac FC, scattered throughout
*Schinus molle L. Peruvian Pepper Tree R, 5 trees s. of Foothill Blvd, 3 trees n. of Foothill Blvd.
*Schinus terebinthifolius Raddi, Brazilian Pepper Tree R, 5 trees under 2.5 m. high within 150 m. north of I-210 Frwy on w. bank of river channel; 1 mature tree in abandoned gravel pit e. of Irwindale Ave. & n. of I-210 Frwy.
Toxicodendron diversilobum (Torrey & A. Gray) E. Greene, Western (Pacific) Poison Oak NC FC

Apiaceae Carrot Family
*Berula erecta (Hudson) Cov., Cutleaf Waterparsnip R, 3 small pop. at waters edge, within 0.5 mi. upstream of Puente Largo Railway Bridge, 1 large pop. just n. of Hwy 39 Bridge at Azusa Cyn. Wilderness Park (El Encanto)
*Daucus sp. R, on w. side of river channel between I-210 & Foothill Blvd. bridges, sandy soil
*Daucus pusillus Michaux., Rattlesnake Weed, American Wild Carrot R, far s. area between I-210 & Foothill Blvd. bridges, w. of main channel

Foeniculum vulgare Miller, Sweet Fennel R, upper area near El Encanto
Apocynaceae Dogbane Family
*Apocynum cannabinum L., Indian Hemp R, west of Encanto Dr., 18 m. north of Fish Canyon Trail parking lot, voucher = veg.
*Nerium oleander L., Oleander R, on both sides of river channel between I - 210 Frwy. & Encanto Park, at least 8plants

Asclepiadaceae Milkweed Family
*Funastrum cynanchoides (Decne.) Schtr. ssp. hetrophyllum (Engelm. ex Torr.) Kartesz, Climbing Milkweed, Hartweg’s Twinevine R, 1 plant at far n.e. area, base of w. facing slope at Azusa River Wilderness Park, 100 m. n. of Hwy. 39

Asteraceae Sunflower Family
Ageratina adenophora (Sprengel) R. King & H. Robinson, Eupatory, Sticky Snakeroot
C
*Ambrosia acanthicarpa Hook. Annual Bur-sage, Flatspine Bur ragweed FC
*Ambrosia psilostachya DC., Western Ragweed, Cuman Ragweed R, 1 pop. at stream near hwy. 39 bike trail parking area
*Argyranthemum frutescens (L.) Sch. Bip., Paris Daisy, Marguerite R, 1 plant under the Puente Largo RR Bridge, under the 2nd arch on the W. side, damp soil, several ornamentals at this location
*Artemisia californica Less., California Sagebrush, Coastal Sagebrush A *Artemisia douglasiana Besser, Mugwort, Douglas’ Sagewort U, scattered throughout along river channel
Baccharis emoryi A. Gray, Emory’s Baccharis R, in gravel pit e. of Irwindale Ave. & n. of 210 Frwy.
Baccharis pilularis DC., Chaparral Broom, Coyote Brush U in gravel pit e. of lrwindale Ave. & n. of 210 Frwy.; FC along the far e. fence boundary from 0.5-1.5 mi. n. of Foothill Blvd., e. of Paved Bike Path; several in far n.e. area in wash
*Baccharis salicifolia (Ruiz Lopez & Pavon) Pers., Mule Fat A
*Bebbia juncea (Benth.) E. Greene var. aspera E. Greene, Sweetbush R, 2 pop. w/in 200 m. of each other:
pop. # 1 = First observed on Apr. 7, 2009, 1 plant, c. 4. ft. high, in sandy soil, open area, on w. side of main river channel, very slight elevation above channel, just s. of confluence with Van Tassel Cnyn., c. 100 m. e. of El Encanto Dr., dominant plants in the area were Lepidospartum squamatum, Baccharis salicifolia, Encelia farinosa
pop. # 2 = Observed with Jane Strong on Apr. 16, 2009, c. 200 m. downstream from pop. # 1, 22 plants were counted, growing on the gunited derbris basin structure on the top and the south side, common plants were Encelia farinosa, located on the w. side of the main channel
*Bidens pilosa L., Common Beggar Ticks, Spanish-needles, Hairy Beggartick
U
*Brickellia californica (Torrey & A. Gray) A. Gray, California Brickelbush FC
*Carduus pycnocephalus L., Italian Plumeless Thistle R
Centauria melitensis L., Tocalote, Maltese Star-thistle A
*Centauria solstitialis L., Yellow Star-thistle R, 1 plant between I-210 Frwy & Foothill Blvd. bridges on w. side of river channel
*Chaenactis glabriuscula DC., Yellow Pincushion R, 1 plant in upper burn area of 2008, on w. side of channel near Van Tassel confluence
Cirsium vulgare (Savi) Ten., Bull Thistle NC U
Conyza canadensis (L.) Cronq., Canadian Horseweed FC
Conyza coulteri A. Gray R, 2 pop.
1) e. side of river channel c. 200 m. north of foothill Blvd., 2.) in burn area c. 0.7 mi. upstream from Puente Largo RR Bridge- 2009
*Conyza floribunda Kunth, Asthmaweed R, under walking bridge e. of EnCanto Park
Corethrogyne filaginifolia (Hook. & Arn.) Nutt., California Aster (Sandaster) NC FC
*Cotula australis (Sieber) Hook. f., Australian Brass-buttons (Waterbuttons) R, under 210 Frwy. in river channel
*Eclipta prostrata (L.) L., False Daisy R, near I-210 Frwy bridge in river channel, scattered locations the length of the river channel
*Encelia californica Nutt., R, 1 plant on n. side of river near the landscape portion of ___________. The closest planted individual is 0.4 mi. to the s.w. at the Bike Path parking lot.
Encelia farinosa Torrey & A. Gray, Incienso, Brittlebush A, first collected in 1969 when it was uncommon; some in bloom in Dec., 2008
Ericameria pinifolia (A. Gray) H.M. Hall, Pine-goldenbush, Pinebush
NC R, scattered throughout
*Eriophyllum confertiflorum (DC.) A. Gray, Golden-Yarrow R
*Gamochaeta purpurea (L.) Cabrera, Spoonleaf Purple Everlasting R, in central area of 2008 burn
*Gazania linearis (Thumb.) Druce, Gazania R, 1 plant in central channel n. of Bike Path parking lot
Gutierrezia californica (DC.) Torrey & A. Gray, California Matchweed, San Joaquin Snakeweed R, 1 plant at 1.0 mi. n. of Foothill Blvd. & 80-150 m. east of Encanto Dr.; 4 plants at 1.6 mi. n.e. of Sierra Madre Ave. on n. side of river channel
*Helianthus annuus L., Annual Sunflower, Common Sunflower C
Heterotheca grandiflora Nutt., Telegraphweed C
*Heterotheca sessiliflora (Nutt.) Shinn. ssp. fastigiata (E. Greene) Semple, Erect Goldenaster, Sessileflower False Goldenaster C in the n.e. area
Heterotheca subaxillaris (Lam.) Britton & Rusby, Camphor Weed FC only in old-abandoned gravel pit, n. of the 210 Frwy & e. of Irwindale Ave.
*Hypochaeris glabra L., Smooth Cat’s-ear FC
*Lactuca serriola L., Prickly Lettuce U throughout
*Lepidospartum squamatum (A. Gray) A. Gray, Scale-broom, California Broomsage A, resprouting & blooming prolifically in Nov. 2008 after summer fire in n.w. area just e. of Encanto Dr.
*Malacothrix saxatilis (Nutt.) Torrey & A. Gray U
*Picris echioides L., Bristly Ox-tongue U
*Psilocarphus brevissimus Nutt., Short Woollhead FC in sandy areas along wash channel between the I-210 Frwy & Foothill Blvd. bridges
*Pseudognaphalium sp. U, in river channel
Pseudognaphalium bioletti Anderb., Two-color Rabbit-tobacco
R, n. side of river channel at 1.6 mi. n.e. of Sierra Madre Ave.
Pseudognaphalium californicum (DC.) Anderb., California Everlasting, Ladies Tobacco FC
*Pseudognaphalium canescens (DC.) W.A. Weber ssp. beneolens (Davidson) Kartesz, Fragrant Everlasting U, n. side of river channel at 1.6 mi. n.e. of Sierra Madre Ave.
Pseudognaphalium canescens (DC.) W.A. Weber spp. microcephalum (Nutt.) Kertesz, White Everlasting, Wright’s Cudweed FC
*Senecio flaccidus Less. var. douglassii (DC.) B. Turner & T. Barkley, Bush Senecio, Shrubby Butterweed, Douglas’ Ragwort U
*Senecio vulgaris L., Common Groundsel, Old-man-in-the-spring U
*Silybum marianum (L.) Gaertner, Blessed Milkthistle U, far n.e. area at Azusa River Wilderness Park on e. side of river channel
*Solidago spectabilis (D.C. Eaton) A. Gray var. confinus (A. Gray) Cronquist, Southern Goldenrod, Nevada Goldenrod R, 1 pop. at spring on s. side of Hwy. 39 at base of cliffs.
*Sonchus asper (L.) Hill, Prickly or Spiny Sow Thistle C, along main river channel
*Sonchus oleraceus L., Common Sow Thistle FC
Stephanomeria cichoriacea A. Gray, Chicoryleaf Wirelettuce R, s. side of hwy. 39 on n.-facing cliffs
*Symphyotrichum sp. R, scattered throughout in main river channel, in wet ground & water
*Tagetes erecta L. Aztec Marigold R, 2 plants under the Puente Largo RR Bridge, damp soil, several ornamentals at this location, veg. on 5/8/2009; 1 mature plant at confluence with Roberts Cyn.
Taraxacum officinale Wigg., Common Dandelion R, under bridges & near permanent damp areas
Viguiera lacineata A. Gray, ;San Diego County Viguiera, Tornleaf Goldeneye R, in old- abandoned gravel pit, n. of the 210 Frwy. & e. of Irwindale Ave., also collected by A.C. Sanders, not observed on Dec. 4, 2008
*Xanthium strumarium L., Rough Cocklebur U

Betulaceae Alder Family
Alnus rhombifolia Nutt. White Alder NC R, 1 tree at approx. 12 ft. high in main river channel at approx. 1 mile n. of Foothill Blvd.

Boraginaceae Borage Family
*Amsinckia menziesii (Lehm.) Nelson & J.F. Macbr. var. intermedia (Fischer & C. Meyer), Ganders, Common Fiddleneck R, entrance to Lario - San Gabriel River County Park, along Foothill Blvd.
Cryptantha intermedia (A. Gray) E. Greene, Popcorn Flower, Clearwater Cryptantha
C
Cryptantha muricata (Hook. & Arn.) Nelson & J.F. Macbr., Prickly Cryptantha, Pointed Cryptantha A
*Pectocarya sp. FC, most common s. of Foothill Blvd. and in the far n.e. area in sandy areas away from yearly flooding areas, otherwise, scattered throughout
*Pectocarya sp. C, scattered throughout
*Pectocarya setosa A. Gray, Stiff stemmed Comb Burr R, disturbed, hard-packed, dry areas, mostly in far s.e. area

Brassicaceae Mustard Family
*Brassica nigra (L.) Koch, Black Mustard R, under walking bridge, e. of Encanto Park
*Capsella bursa-pastoris (L.) Medikus, Shepherd’s Purse R
*Cardamine sp. R, 1 small pop. on e. bank of river at 100-200 m. n. of Foothill Ave.
*Erysimum capitatum (Douglas) E. Greene ssp. capitatum, Western Wallflower, Sanddune Wallflower R, 1 plant in wet soil near stream, in river channel n. of SGC Information Center
*Hirschfeldia incana (L.) Lagr.-Fossat, Shortpod Mustard C
*Lepidium sp. U
Lepidium virginicum L. var. robinsonii (Thell.) C. Hitchc., Robinson’s Pepperweed
U
*Lobularia maritima (L.) Desv., Sweet Alyssum U, under I- 210 Frwy. in river channel, scattered throughout, white & lavender flowered plants
*Nasturtium officinale W.T. Aiton, Water Cress C in water of main river channel
*Raphanus R, long abandoned gravel pit, just n. of I-210 Frwy., e. of Irwindale Ave.
*Rhaphanus sativas L., Cultivated Radish R, 1 in abondoned gravel pit, E. of Irwindale Ave. & N. of I- 210 Frwy., 2 pop. in central area
*Rorippa palustris (L.) Besser ssp. occidentalis (S. Watson) Abrams, Marsh Yellowcress, Western Bog Yellowcress FC in main river channel in central area, in moist soil at water’s edge or in previously moist soil
*Sisymbrium sp. FC, throughout
*Sisymbrium sp. R, main river channel n. of Bikepath Parking area at Azusa Cnyn. Rd.

Cactaceae Cactus Family
*Cleistocactus sp. R, 2pop. 1 on n. side of river channel at 1.5 mi. n.e. of Sierra Madre Ave., the other at 0.1 mi. further up the cnyn. on n. side of river; up to 7 ft. high
Cylindropuntia californica (Torr. & A. Gray) F.M. Kunth var. parkeri (J.M. Coult.) J. Rebman, Cane Cholla, Snake Cholla U, 1 s. of Foothill Blvd. in s.e. area; < 20 n. of Foothill Blvd., mostly e. of the paved bike path
Opuntia littoralis (Engelm.), Cockerell, Coastal Pricklypear A

Caprifoliaceae Honeysuckle Family
Lonicera subspicata Hook. & Arn. var. denudata Rehder, Southern Honeysuckle, Santa Barbara Honeysuckle NC R, upper n.e. area along Hwy. 39
Sambucus nigra L. ssp. canadensis (L.) R. Bolli, American Black Elderberry
U, scattered throughout

Caryophyllaceae Pink Family
*Cerastium glomeratum Thuill., Mouse-ear Chickweed, Sticky Chickweed U
*Polycarpon tetraphyllum (L.) L. Fourleaf Manyseed (Allseed) R, scattered throughout in sandy, usually shaded areas
*Spurgularia sp. R, 1 pop. n. of Bike Path Parking Lot at San Gabriel Cnyn. Rd., in main river channel
*Stellaria sp. FC

Chenopodiaceae Goosefoot Family
*Atriplex serenana Nelson, Bractscale ? R, on n. side of river channel at 0.9 mi. n.e. of Sierra Madre Ave.
*Chenopodium sp. R, 1 at 300 m. n. of Puente Largo Railway Bridge, in deep sand, burned area
*Chenopodium sp. R, under walking bridge, e. of EnCanto Park
*Chenopodium sp. R
*Chenopodium album L., Pigweed, Lambsquarters FC
*Chenopodium ambrosioides L., Mexican Tea FC
*Chenopodium botrys L., Jerusalem Oak, Goosefoot U, throughout
Chenopdium californicum (S. Watson) S. Watson, California Goosefoot FC
*Salsola tragus L., Tumbleweed, Russian Thistle FC

Convolvulaceae Morning Glory Family
*Calystegia macrostegia (E. Greene) Brummitt ssp. intermedia (Abrams) Brummitt, Island False Bindweed C
*Dichondra sp. R, 2 plants, both in river channel near Walking Bridge, e. of Encanto Park, veg.

Crassulaceae Stonecrop Family
*Crassula colligata Toelken ssp. lamprosperma R, mostly near 1 mi. n. of Foothill Blvd., e. of Encanto Dr., w. side of main river channel, common in burn area
*Crassula connata (Ruiz Lopez & Pavon) A. Berger, Sand Pygmy-Weed A, throughout
*Crassula tillaea Lester-Garl., Moss Pygmyweed FC, mostly in s. area
Dudleya densiflora (Rose) Moran, San Gabriel Mountains Dudleya NC R, on cliffs on s. side of hwy. 39, upstream from USFS Information Center
Dudleya lanceolata (Nutt.) Britton & Rose, Lanceleaf Dudley (Liveforever) FC
Cucurbitaceae Gourd Family
*Cucurbita moschata Duchesne, Winter Crookneck Squash R, near hwy 39 bike path parking lot; 1 plant with 20 ft. runners and 2 fruits of 20 lbs. each, moist soil near stream, full exposure
*Marah macrocarpus (E. Greene) E. Greene, Wild-cucumber FC

Cuscutaceae Dodder Family
*Cuscuta sp. C, on Baccharis salicifolia

Datiscaceae Datisca Family
*Datisca glomerata (C. Presl.) Bailon, Durango Root R, 1 plant in s. burn area of 2008 in sand on e. side of main channel at 0.6 mi. upstream from Puente Largo Railway Bridge


Ericaceae Heath Family
*Arctostaphyllos glauca Lindley, Bigberry Manzanita R, 1 10 ft. plant in far s.e. area, n. of 210 frwy

Euphorbiaceae Spurge Family
Chamaesyce maculata (L.) Small, Spotted Spurge (Sandmat) FC
*Croton californicus Mull. Arg., California Croton U, mostly n. of Foothill Blvd. & scattered to far n.e. area
*Euphorbia peplus L., Petty Spurge FC, mostly near moist soil
*Ricinus communis L., Castor Bean (Castorbean) FC, abundant in burn areas of summer of 2008

Fabaceae Pea Family
*Lotus heermanii (Durand & Hilg.) E. Greene, Silky Lotus, Heerman’s Bird’s-foot Trefoil
R, 1 plant in main river channel at 0.8 mi. upstream from Puente Largo Railway Bridge
Lotus salsuginosus E. Greene var. salsuginosus, Coastal Bird’sfoot Trefoil FC, in burn area of 2008, on east side of river channel in central area
*Lotus sp. R, 1 plant under walking bridge, e. of Encanto Park
*Lotus scoparius (Nutt.) Ottley, California Broom, Common Deerweed C
*Lotus strigosus (Nutt.) E. Greene, Strigose Lotus (Bird’s-foot Trefoil)
FC, throughout
*Lupinus sp. U, upper burn area
*Lupinus bicolor Lindley, Miniature Lupine R, in sandy soil on n. side of river at ? mi. n. of Sierra Madre Ave. at Hwy 39
*Lupinus formosus Greene, Summer Lupine ? R, mostly in rocky, sandy soil
*Lupinus hirsutissimus Benth., Stinging Annuyal Lupine U, in sandy soil in burn area of 2008, central area.
*Lupinus sparsiflorus Benth., Coulter’s Lupine R, rasied sandy/rocky area, n. of main channel, c. 0.4 mi. n.e. of Bike Path parking lot
*Lupinus truncatus Hook. & Arn., Collared Annual Lupine U, scattered throughout
*Medicago polymorpha L., Burclover FC, scattered throughout
*Melilotus indicus (L..) All., Sourclover, Annual Yellow Sweetclover R, main river channel, moist soil, due n. of SGC Information Center
*Melilotus officinalis (L.) Lam., White Sweetclover U, in main river channel & wet areas

Fagaceae Oak Family
Quercus agrifolia Nee, Coast Live Oak, Encina California Live Oak NC R, 3 plants < 20 ft. high along e. boundary, on e. side of bike path from 0.8-1.3 mi. n. of Foothill Blvd., veg.
*Quercus lithocarpus ? 1 tree c. 24 ft. high at c. 700 m. n. of Puente Largo Railway Bridge on w. side of channel, c. 11 m. e. of El Encanto Dr.

Garryaceae Silk Tassel Family
*Garrya sp. R, s. side of hwy 39 in n.e. area

Geraniaceae Geranium Family
*Erodium botrys (Cav.) Bertol., Long-beaked Filaree (Stork’s Bill) R, under walking bridge, e. of EnCanto Park
*Erodium cicutarium (L.) L’Her., Redstem Filaree (Stork’s Bill) C

Grosulariaceae Gooseberry Family
*Ribes californicum Hook. & Arn. hesperium (McClatchie)Jepson, Hillside Gooseberry R in upper n.e. area on n. shoulder of hwy. 39
*Ribes aureum Pursh var. gracillimum (Cov. & Britton) Jepson, Golden Currant
FC, n. of Foothill Blvd. & far n.e. area
*Ribes indecorum Eastw., Whiteflower Currant R, 3 plants s. of Foothill Ave. in the e. area

Haloragaceae Water-milfoil Family
*Myriophyllum sibiricum V. Komarov, Siberian milfoil, Shortspike Watermilfoil
R, 1 pop. near hwy. 39 bike path parking lot, in secondary water channel

Hamamelidaceae
*Liquidambar orientalis Mill, Oriental or Turkish Sweetgum R, 3 trees, (24-28 ft. high) in permanently damp soil, just n. of Puente Largo Railway Bridge, permanently damp to flooded condition

Hydrophyllaceae Waterleaf Family
*Emmananthe penduliflora Benth., Whispering Bells U, throughout
Eriodictyon crassifolium Benth., Thickleaf Yerba Santa U, on s. side of river channel at 0.6-08 mi. north of Sierra Madre Ave., on the n. shoulder of Hwy. 39
*Eriodictyon trichocalyx A.A. Heller, Smoothleaf Yerba Santa A
*Eucrypta chrysanthemifolia (Benth.) E. Greene var. chrysanthemifolia, Eucrypta, Spotted Hideseed A
*Phacelia brachyloba (Benth.) A. Gray, Shortlobe Phacelia R, 1 plant in lower burn area of 2008, c. 0.7 mi. upstream from Puente Grande RR Bridge, sand hills e. of main channel; 1 plant in upper burn area, 2009
*Phacelia grandiflora (Benth.) A. Gray, Largeflower Phacelia FC in both burn areas of 2008 in the upper channel, above the Puente Largo RR Bridge
*Phacelia minor (Harvey) Thell, Wild Canterbury Bells FC, throughout, especially in burns
*Phacelia cicutaria E. Greene, Caterpillar Phacelia FC, more common in far n.e. area
*Phacelia distans Benth., Common or Distant Phacelia A above the Foothill Blvd. Bridge
*Phacelia ramosissima Douglas ex Lehm. Branching Phacelia ? FC on the w. side of the main channel between the I-210 & Foothill Blvd. bridges, absent elsewhere

Lamiaceae Mint Family
Marrubium vulgare L., Horehound FC
*Mentha sp. R, 1 plant, veg. moist soil in main channel near old San Gabriel Valley Gun Club
Salvia apiana Jepson, White Sage A, mostly in s. area
Salvia columbariae Benth., Chia R, mostly in far n.e. area
Salvia mellifera E. Greene, Black Sage FC

Lauraceae Laurel Family
*Umbellularia californica (Hook. & Arn.) Nutt., California Bay, Pepperwood, California Laurel
R, 1 mature tree on n. side of river channel at c. 1.5 mi. n.e. of Sierra Madre Ave.

Linaceae Flax Family
*Linum lewisii Pursh, Lewis Flax, Western Blue-flax, R, 3 plants under walking bridge, e. of Encanto Park, damp soil

Lythraceae Loosestrife Family
*Lythrum californicum Torrey & A. Gray, California Loose-strife R, near water margins

Loasaceae Stickleaf Family
*Mentzelia sp. R, in burn area, near confluence of Van Tassel Cnyn.
*Mentzelia sp. R, near entrance to El Encanto River & Mountain Conservancy
Mentzelia laevicaulis (Hook.) Torrey & A. Gray, Giant Blazing Star, Smoothstem Blazingstar R, mostly in central and far n.e. areas in loose soil

Meliaceae Mahogany Family
*Melia azadarach L., China Tree, Umbrella Tree, Chinaberrytree
R, 2 mature trees: 1 between I-210 Frwy & Foothill Ave. on the w. side of the river channel,
1 just n. of walking bridge in damp soil on w. side, e. of Encanto Park, ___mi. n. of Foothill Blvd.
Moraceae Fig Family
Ficus carica L., Common Fig, Edible Fig R, several trees on e. river bank, c. 300 m. n. of Foothill Ave.
*Morus sp. R, 5 plants, 5-20 ft. high, under the 210 Frwy. in river channel; 1 mature tree in river channel at 0.75 mi. n. of Sierra Madre Ave.

Myoporaceae Myoporum Family
Myoporum laetum Forster, Ngaio Tree R, several shrubs, 0.4-1.0 mi. north of Foothill Ave. on e. side of river in main river channel & 1 at far e. boundary along fence; 1 plant under I-210 Frwy. in river channel

Myrtaceae Myrtle Family
*Eucalyptus sp. R, west of river channel, s. of Foothill Ave.
Melaleuca citrina (Curtis) Dum. Cours R, 1 plant at 4 m. high on e. river bank, c. 300 m. n. of Foothill Ave.

Nyctaginaceae Four-O’Clock Family
*Mirabilis jalapa L. Four-O’Clock R, just n. of old Sierra Madre Bridge on e. edge of river channel, c. 0.5 mi. n. of Foothill Blvd., 1 pop. of c. 20 plants
Mirabilis laevis (Benth.) Curran, Wishbone Bush U

Oleaceae Ash Family
Fraxinus dipetela Hook. & Arn., California Ash FC only on n.-facing slope & cliffs on the s. side of hwy. 39
*Fraxinus pennsylvanicus Marsh ssp.velutina (Tor.) Miller, Velvet Ash R, 1 tree under I-210 Frwy. bridge, in river channel; also collected by A.C. Sanders in abandoned gravel pit e. of Irwindale Ave. & n. of I-210 Frwy; 1 at 1.0 mi. n.e. of Sierra Madre Ave. on s. side of river channel, 1 on e. side of river channel at approx. 0.7 mi. n. of Foothill Blvd.
*Fraxinus uhdei (Wenz.) Lingeish., Shamel Ash, Evergreen Ash R, several scattered throughout, mostly in damp areas

Onagraceae Evening Primrose Family
* Camissonia sp. R, c. 0.4 mi. w. of Bike Path paking lot at Hwy 39, in sandy soil, s. of main channel
Camissonia bistorta (Torrey & A. Gray) Raven, California or Southern Suncup C
*Camissonia californica (Torrey & A. Gray) Raven, California Suncup C
*Camissonia micrantha (Sprengel) Raven, Miniature Suncup R, several populations from the I-210 Frwy, n. to the confluence with Fish Cyn., sandy soil
Epilobium canum (E. Greene) Raven, California Fuchsia, Zauschneria, Hummingbird Trumpet R, mostly s. of hwy. 39 in n.e. area
Epilobium ciliatum Raf., Fringed Willowherb U, scattered throughout in main river channel and secondary water channels
Oenothera elata Kunth ssp. hirsutissima (S. Watson) W. Dietr., Hooker’s Evening Primrose
FC, along water ways or areas periodically flooded

Papaveraceae Poppy Family
Ehrendorferia chrysantha (Hook. & Arn.) Kylander, Golden Eardrops R, 1 pop. of c. 20 plants in s. burn area of 2008 in deep sandy soil
*Eschscholzia californica Cham., California Poppy R, in burn area, w. of main channel just s. of confluence with Van Tassel Cnyn., under walking bridge e. of Encanto Park

Plantaginaceae Plantain Family
*Plantago indicca L. R, on dirt service rd. on w. side of river, n. of the Foothill Blvd. Bridge
*Plantago erecta R, Jnct. of San Gabriel & Van Tassel Cnyn’s.
Plantago lanceolata L., English Plantain, Narrowleaf Plantain NC R, veg., near I-210 Frwy. bridge in river channel
Plantago major L., Common Plantain R

Oxalidaceae Oxalis Family
*Oxalis sp. R, several under walking bridge, e. of Encanto Park
*Oxalis pes-caprae L., Sour Grass, Cape Oxalis, Bermuda Buttercup
FC in upper n.e. area, otherwise, scattered throughout

Platanaceae Sycamore Family
*Platanus racemosa Nutt., Western Sycamore, California Sycamore U

Plumbaginaceae Leadwort Family
*Limonium sp. R, 1 large plant in river channel c. 0.8 mi. n. of Sierra Madre Ave., in dry soil, 1 additional plant in moist soil on n. side of river, n. of SGC Information Station

Polemoniaceae Phlox Family
Eriastrum sapphirinum (A. Gray) H. Mason, Miniature Woollystar ?
R, upper 2008 burn area, in sandy/rocky soil near conflurence of Van Tassel Cyn., at least 2 other populations.
*Gilia angelensis V. Grant, Angel’s Gilia, Chaparral Gilia R, 1 pop. at ____ mi. n.e. of Sierra Madre Ave. at Hwy 39, e. side of river in sandy soil
Navarrettia hamata E. Greene, Hooked Pincushionplant C only in the far n.w. area just e. of Encanto Dr. and in the far s.e. area n. of the I -210 Frwy at c. 300 m. e. of the main river channel

Polygonaceae Buckwheat Family
*Chorizanthe coriacea ?, Leather Spineflower R, 1 pop. just s. of Foothill Blvd. c. 200 m. w. of gravel pit
Chorizanthe staticoides Benth., Turkish Rugging U, 2 pop.; 1 in the far s.e area just n. or 210 Frwy & w. of the gravel pit (w. of Irwindale Ave.); 1 pop. in n.w. area e. of Encanto Dr.
Eriogonum gracile Benth., Slender Woolly Buckwheat ? R, at 1.5 mi. n.e. of Sierra Madre Ave. on n. side of river channel
*Eriogonum elongatum Benth., Longstemmed Buckwheat U, in upper
n.e. area
*Eriogonum fasciculatum Benth. var. foliolosum (Nutt.) Abrams, California Buckwheat, Eastern Mojave Buckwheat A
*Polygonum sp. R, main river channel at 1.0 mi. n. of Foothill Blvd.
*Polygonum arenastrum Boreau, Common Knotweed, Doorweed, Oval-leaf Knkotweed
U
*Polygonum persicaria L., Spotted Ladythum C in main river channel
Pterostegia drymarioides Fischer & C. Meyer, Woodland Pterostegia U, throughout
*Rumex sp. FC, mostly in moist areas
Rumex crispus L., Curly Dock R

Portulacaceae Purslane Family
*Calandrinia ciliata (Ruiz Lopez & Pavon) DC., Fringed Redmaids R, 1 pop. at
1.2 mi. n. of Sierra Madre on n. side of river at Hwy 39.
*Claytonia parviflora Hook., Narrow-leaved Miner’s Lettuce, Streambank Springbbeauty
R, 1 plant in damp soil under walking bridge e. of EnCanto Park, ___ mi. n. of Foothill Blvd.
Claytonia perfoliata Willd., Miner’s Lettuce NC U, upper n.e area
Portulaca oleracea L., Common Purslane, Little Hogweed NC R, 1 pop. at c. 0.7 mi. n. of Sierra Madre in river channel

Primulaceae Primrose Family
Anagallis arvensis L., Poor-man’s Weatherglass, Scarlet Pimpernel U

Ranunculaceae Buttercup Family
*Clematus sp. U, scattered throughout

Rhamnaceae Buckthorn Family
*Ceanothus crassifolius Torrey, Hoaryleaf Ceanothus R, 2 plants on raised sandy/rocky area on n. side of main channel, c. 400 m. n.e. of Bike Path parking lot on Hwy. 39
Ceanothus cuneatus (Hook.) Nutt., Buckbrush R, s.w. jnct. of Sierra Madre & Vernon Ave., area now developed, no plants currently observed
*Ceanothus leucodermis E. Greene, Chaparral Whitethorn R, 2 plants, 1 plant on raised sandy/rocky area on n. side of main channel, c. 400 m. n.e. of Bilke Path parking lot on Hwy. 39; 1 plant on raised sand bar in center of channel c. 0.3 mi. upstream from conluence of Fish Cyn.
*Ceanothus sorediatus Hook. & Arn., Hoary-leaf Ceanothus, Jimbrush R, 1 plant, c. 70 m. n. of 210 Frwy. on w. side of river channel, 3 plants on raised sandy/rocky area on n. side of main channel, 400 m. n.e. of Bike Path parking lot at Hwy. 39
Rhamnus californica Eschsch., California Coffeeberry (Buckthorn)
NC,veg. R
Rhamnus crocea Nutt., Spiny Redberry, Redberry Buckthorn U
*Rhamnus ilicifolia Kellogg, Hollyleaf Redberry R, at extreme n.e. area along river channel, n. of hwy. 39

Rosaceae Rose Family
*Cercocarpus montanus Raf. var. glaber (S. Watson) F.L. Martin, Birch-leaf Mountain Mahogany R, mostly along roadside of hwy. 39 & on hillside and cliffs in far n.e. area; 1 mature plant on n. side of river channel at 1.6 mi. n.e. of Sierra Madre Ave.
Cotoneaster lacteus W.W. Sm., Cotoneaster R, on s. side of hwy. 39 on cliffs in the far n.e. area
*Heteromeles arbutifolia (Lindley) Roemer, Toyon, Christmas Berry
R in the s. area, mostly along the far e. boundary near fence, c. 0.6 mi. north of Foothill Blvd.; increasingly more abundant further upriver
*Prunus ilicifolia (Nutt.) D. Dietr., Hollyleaf Cherry R in s. area, mostly along the far e. boundary near fence, n. of Foothill Blvd.; increasingly more common further up the canyon
Rubus ursinus Cham. & Schldl., California Blackberry NC R

Salicaceae Willow Family
*Populus balsomifera ssp. trichocarpa R, several in far n.e. area n. of hwy. 39
*Populus fremontii S. Watson ssp. fremontii, Alamo or Fremont Cottonwood
R, 2 trees in main river channel, c. 0.5-0.9 mi. n. of Foothill Blvd.
*Salix exigua Nutt., Slender Sandbar Willow, Narrowleaf Willow FC, in river channel, mostly above 0.7 mi. n. of Foothill Blvd.
*Salix goodingii C. Ball, Goodding’s (Black) Willow A in river channel, mostly n. of Foothill Blvd.
*Salix laseolepis Benth., Arroyo Willow C along river channel
Sapindaceae Soapberry Family
Koelreutaria bipinnata Franchet, R, many seedlings < 2 ft. high in permanent damp soil under walking bridge, 1 plant at 2 m. high and 1 at 1.5 m. high, veg. voucher

Scrophulariaceae Snapdragon Family
*Castilleja minor (A. Gray) A. Gray ssp. spiralis (Jepson) Chuang & Heckard, Lesser Indian Paintbrush R, at spring, at 1.4 mi. n.e. of Sierra Madre Ave. on s. side of hwy. 39 at base of mt. slope, in wet soil
*Diplacus aurantiacus (W. Curtis) Jeps. ssp. aurantiacus, Orange Bush Monkeyflower R, mostly in far e. area along boundary fence, n. of foothill Blvd.
*Mimulus sp. R, 1 pop., e. of main river channel at c. 500 m. n. of Puente Largo Railway Bridge
Mimulus cardinalis Benth., Scarlet Monkeyflower NC R, in s. burn area of 2008, c. 0.7 mi. upstream from Puente Largo Railway Bridge, e. of main channel, in sand hill depressions
Mimulus guttatus DC., Common Monkeyflower, Seep Monkeyflower
U, in moist soil at water’s edge, several pop. above Foothill Blvd.
*Nuttallanthus texanus (Scheele) D.A. Suton, Blue Toadflax, Texas Toadflax
R, 1 pop. c. 100 m. north of the I - 210 Frwy at 300 m. east of the main river channel
Penstemon spectabilis Lindley, Showy or Royal Penstemon FC in s. area
*Scrophularia californica Cham. & Schldl., California Figwort R, 1 plant under pedestrian bridge, e. of El Encanto Park
*Verbascum blattaria L., Moth Mullein U mostly in moist soil
*Veronica anagallis-aquatica L., Water Speedwell FC, along waterways & wet soil

Solanaceae Nightshade Family
*Cestrum nocturnum , Night Blooming Jasmine R, several plants, under the Puente Largo Railway Bridge, under the second arch from the west, veg. voucher
*Datura wrightii Regel, Sacred Thorn-apple U, 0.6 mi. n. of Foothill Blvd. on e. bank of river channel
*Lycopersicum esculentum L., Tomato R, 1 plant on w. side of river channel just s. of Foothill Ave. bridge
*Nicotiana glauca Graham, Tree Tobacco FC
*Solanum sp. (fls. violet) R, under Puente Largo RR Bridge, e. of Encanto Park, erect, 5.5 ft. tall, leaves glabrous
*Solanum sp. (fls. violet, leaves scented, compact) R, under Puente Largo RR Bridge, moist soil
*Solanum douglasii Dunal, White Nightshade, Greenspot Nightshade FC, throughout
Solanum xanti A. Gray, Purple Nightshade, Chaparral Nightshade U, throughout

Tamaricaceae Tamarisk Family
*Tamarix ramosissima Ledeb., Saltcedar C in frequently flooded areas

Tropaeolaceae Nasturtium Family
Tropaeolum majus L., Garden Nasturtium R, 1 plant, 0.3 mi. upstream from Puente Largo Railway Bridge on w. side of main channel, under tree canopy

Ulmaceae Elm Family
*Ulmus pumila L., Siberian Elm R, 2 plants near *I-210 Frwy. bridge in river channel, several in abandoned gravel pit e. of Irwindale Ave. & n. of I-210 Frwy, veg., several others scattered throughout river channel

Urticaceae Nettle Family
Pariateria hespera B.D. Hinton, Rellita Pellitory R
*Urtica dioica L. ssp. holosericea (Nutt.) Thorne, Hoary or Stinging Nettle R, 1 pop. in s. burn area of 2008, c. 0.7 mi. upstream from Puente Largo Railway Bridge, e. of main channel
*Urtica urens L., Dwarf Nettle FC

Valerianaceae Velarian Family
Centranthus ruber (L.) DC., Red Valerian C only on the cliffs on the s. side of hwy. 39 in the far n.e. area

Verbenaceae Vervain Family
*Glandularia pulchella (Sweet) Troncoso, South American Mock Vervain R, 1 plant under Puente Largo Railway Bridge
Verbena lasiostachys Link, Vervain R, n.w. of Bike Path parking lot at Hwy. 39 & at 0.7 mi. n. of Puente Largo Railway Bridge in burn area of 2008 on e. side of main channel, sandy soil

Vitaceae Grape Family
*Vitus girdiana Munson, Desert Wild Grape R, in far n.w. area, e & w. of Encanto Dr.

Zygophyllaceae Caltrop Family
*Tribulus terrestris L., Caltrop, Puncture Vine R, on s. shoulder of hwy. 39 in far n.e. area

Monocotyledons:

Araceae
*Zantedeschia aethiopica (L.) Spreng., Calla Lily, Giant White Arum R, 1 plant , c. 75 m. upstream from Puente Largo Railway Bridge, w. of EnCanto Park, in dry, deep sandy soil, subject to flooding

Arecaceae Palm Family
Phoenix canariensis Chabaud, Canary Island Date Palm NC R, 1 under Foothill Ave. Bridge, several in upper n.w. area w. of Encanto Dr.
Washingtonia robusta H. Wendl., Mexican Fan Palm, Washington Fan Palm
NC R, veg., several scattered along main river channel, mostly under 3 m.

Commelinaceae Spiderwort Family
Commelina benghalensis L., Dayflower, Jio R, 1 pop. on e. side of river in dense willows and dark well-developed wet soil at 0.5 mi. n. of Foothill Blvd.; 1 pop. under Puente Largo Railway Bridge, e. of Encanto Park

Cyperaceae Sedge Family
Carex spissa L.H. Bailey, San Diego Sedge R, 1 pop. at spring on s. side of hwy. 39 at base of cliffs
*Cyperus involucratus Rottb., Umbrella Plant R, several plants under bridges at I-210 Frwy., Puente Largo Railway Bridge, e. of Encanto Park, and several other locatioins along main river channel
*Cyperus eragrostis Lam., Umbrella Sedge, Tall Flatsedge A, in moist zones
*Schoenoplectis sp. R, 1 small pop. c. 0.8 mi. n. of Foothill Blvd. in main river channel, e. bank at edge of willow zone

Juncaceae Rush Family
*Juncus sp. R, 1 pop. in s. burn area c. 0.7 mi. upstream from Puente Largo Railway Bridge in sand hill depressions
*Juncus bufonius L., Toad Rush R in moist zones
*Juncus xiphioides E. Meyer, Irisleaf Rush R, in moist
zones

Lemnaceae Duckweed Family
*Lemna sp. R, far n.e. area

Liliaceae Lily Family
*Agave americana L., American Century Plant R, 2 small pop. on e. side of river channel at c. 0.6 n. of Foothill Blvd.; 1 pop. on n. side of river channel at c. 1.5 mi. n.e. of Sierra Madre Ave.
Calochortus albus Dougl. ex Benth., White Fairy-lantern R, several plants in dry rocky area s. of hwy 39, up-river from USFS Information Center
*Dichelostemma capitatum (Benth.) Alph Wood, Blue Dicks FC between I-210 Frwy & Foothill Blvd. in sany soil on w. side of channel; 1 plant in sandy area n. of main channel at c. 200 m. n.e. of Bike Path parking lot at Hwy. 39, several at for n.e. area against w. facing mt. slope
*Hesperoyucca whipplei Torrey, Chaparral Yucca C, 2 plants blooming on Jan. 10, 2009 in burn area of fall, 2008

Orchidaceae Orchid Family
Epipactis gigantea Hook., Stream Orchid R, 1 pop. at spring with Carex spissa on s. side of hwy. 39, upriver from USFS Information Center

Poaceae Grass Family
*Achnatherum sp. U, mostly in the far s.e. area
*Arundo donax L., Giant Reed Formerly A at many locations, irradication projects have been in place here from at least 1998, still FC in 2008 in many streambank areas
*Avena barbata Link, Slender (Wild) Oat U, throughout
*Bromus carinatis Hook. & Arn. var. carinatus, California Brome R, several plants under Puente Largo RR Bridge, e. of Encanto Park, in abandoned gravel-pit, n. of I-210 Frwy & e. of Irwindale Ave., A.C. Sanders, May 26, 2003, 522 ft.
(159 m.)
*Bromus madritensis L. ssp. rubens (L.) Husnot, Foxtail Chess, Red Brome FC FC
Cortaderia sp. R, 1 at confluence with Van Tassel Cyn., 1 in s. burn area of 2008 e. of main river channel in deep sand, substatntial pop. on s. side of Hwy 39 at seep area on n. facing cliff
*Cynodon dactylon (L.) Pers., Bermuda Grass R, several pop. scattered throughout
*Echinocloa crus-galli (L.) P. Beauv., Barnyard Grass FC in moist zones
*Lamarkia aurea (L.) Moinch, Goldentop Grass FC
*Leptochloa fusca (L.) Kunth ssp. uninervia (J. Presl) N. Snow, Mexican Sprangletop
R, under I- 210 Frwy. bridge in moist zone
*Lolium perenne L., Perennial Ryegrass U
*Melica imperfecta Trin., Coast-range Melic, Smallflower Melicgrass R
*Melinis repens (Wild.) Zizka, Natal Grass R, several plants under the Puente Largo RR Bridge, e. of Encanto City Park
*Muhlenbergia microsperma (DC.) Kunth, Littleseed Muhly R, 2 populations: 1 at ___mi. n. of Foothill Blvd. on the e. side of the river channel and along the w. side of the SGR Bike Path, 1 also along the bike path on its n. side c. 300 m. w. of the Bike Path Parking lot at Hwy 39
Muhlenbergia rigens (Benth.) A. Hitchc., Deergrass NC R, several plants on s.facing cliff at far n.e. area in El Encanto Azusa River Wilderness Park, on the n. side of the Hwy 39 bridge. & n. side of river channel
Paspallum dilatatum Poir., Dallis Grass R, in gravel pit in the far s.e. area
*Pennisetum clandestinum Chiov., Kikuyu Grass R, veg. under I-210 Frwy. bridge in river channel
*Pennisetum setacium (Forsk.) Chiov., Crimson Fountaingrass A
*Piptatherum miliaceum (L.) Cosson, Smilograss FC
*Poa annua L., Annual Bluegrass C, scattered throughout
Polypogon viridis/interruptus (discrepancy-determination pending) FC in moist soil
*Schismus barbatus (L.) Thell, Mediteranean Schismus, Common Mediteranean Grass
FC in several areas
Seteria parviflora (Poir.) Kerguelon, Marsh Bristlegrass R, in gravel pit in far s.e. area
*Vulpia myuros (L.) C.C. Gmel., Rat-tail Fescue A

Typhaceae Cattail Family
Typha angustifolia L., Narrowleaf Cattail A in some areas in main river channel n. of Foothill Blvd.; R, at spring with Carex spissa south of hwy. 39, upstream from USFS Information Center
*Typha domingensis Pers., R, c. 400 m. n. of Puente Largo Railway Bridge in main channel, lower burn area of fall, 2008
*Typha latifolia L., Broadleaf Cattail U, in main river channel n. of Foothill Blvd.

Zannichelliaceae Horned Pondweed Family
*Zannichellia palustris L., Horned Pondweed U, several pop. in water

Additional plants recorded by other collectors:
1. Eragrostis lehmanniana Nees, Lehmann Lovegrass
A.C. Sanders May 26, 2003 elev. 158 m.
gravel pit, e. of Irwindale Ave. & s. of Foothill Ave.
2. Layia glandulosa
I.M. Johnston May 13, 1917 elev. 500 ft. (152 m.)
3. Linanthus aureus ssp. aureus
I. Johnston May 13, 1917 elev. 500 ft. (152 m.)