UC Davis Herbarium

 

ANNOTATED CATALOGUE OF VASCULAR PLANTS IN THE COLD CREEK BASIN

The G.L. Stebbins Cold Canyon Reserve, University of California - Davis

 

The following checklist includes all vascular plants known to be growing without cultivation in the Cold Creek basin of Solano County, California .  For the purposes of the present study, the Cold Creek basin includes the entire Cold Creek drainage, G.L. Stebbins Reserve, Wildhorse Canyon and Blue Ridge .  This 1999 list was prepared by Kate Mawdsley, with substantial assistance from Dr. Ellen Dean, Director of the UC Davis Herbarium, and Dr. Fred Hrusa, Senior Taxonomist at the California Dept. of Food and Agriculture, who prepared the dichotomous keys.  The present list took as its first source the list compiled for the 1985 publication, Flora and Fauna of the Stebbins Cold Canyon Reserve by John L. King.  The 1985 list was the result of the extensive fieldwork and collections of Dr. G. Ledyard Stebbins and Dr. Grady L. Webster, as well as earlier lists prepared by Bruce Pavlik and John Willoughby.  Almost all of the taxa listed are vouchered in the herbaria of the University of California , Davis (DAV) and/or California State University , Sacramento (SACT).

Plant specimens examined for the  original 1985 checklist were identified using  Munz and Keck (1959), although problematic determinations were checked against Jepson (1925), Abrams (1923-60) and other sources.  Nomenclature and suprageneric taxonomy for this1999 revision follow Hickman (1993).  Annotation includes:  scientific name and author; common name (where known); habitat as given in Hickman (1993); phenology (flowering season), and selective vouchers.  The list is arranged phylogenetically by division, class and order, but alphabetically by family, genus, and species.

 

FERNS AND THEIR ALLIES

 

BLECHNACEAE.  Chain fern family

Woodwardia fimbriata Smith.  Giant chain fern.  Wet places.

 

DRYOPTERIDACEAE.  Wood fern Family.

Dryopteris arguta (Kaulf.) Maxon.  Wood Fern.  Open, wooded slopes.

 

EQUISETACEAE.  Horsetail Family.

Equisetum arvense L.  Common horsetail.  Moist disturbed sites.

Equisetum hyemale L. ssp. affine (Engelm.) Calder & R.H. Taylor. Scouring rush.  Streams; moist, sandy or gravelly areas.

 

POLYPODIACEAE.  Polypody Family.

Polypodium calirhiza S. Whitmore & A.R. Smith.  Shaded canyons, streambanks.  Stebbins C375 (DAV).

 

PTERIDACEAE.  Maidenhair Fern Family.

Adiantum jordanii C. Mueller.  Maidenhair fern.  Shaded hillsides, moist woods.  Stebbins C317 (DAV).  Willoughby W758 (SACT).

Pellaea andromedifolia (Kaulf.) Fee.  Coffee fern.  Rocky or dry sites.  Stebbins C331 (DAV).

Pellaea mucronata (D. Eaton) D.Eaton.  Bird's-food fern.  Rocky or dry sites.

Pentagramma triangularis G. Yatsk., M.D. Wind. & E. Woll.  Goldenback fern.  Shaded slopes or rocky sites.  Stebbins C316 (DAV).  Mawdsley 50 (DAV).

 

CONIFERS

 

PINACEAE.  Pine Family.

Pinus sabiniana Douglas .  Gray pine.  Foothill woodland, chaparral.  April-May.  Willoughby W767 (SACT). 

 

FLOWERING PLANTS

DICOTYLEDONS

 

ACERACEAE.  Maple Family.

Acer macrophyllum Pursh.  Bigleaf maple.  Along streambanks and canyon floors.  April-May.  Bell 19 (DAV).

 

ANACARDIACEAE.  Sumac Family.

Rhus trilobata Torrey & A. Gray.  Squaw-bush.  Common in canyons and creek beds, dry slopes and thickets.  March-April.  Addicott 16 (DAV).  Willoughby W746 (SACT).

Toxicodendron diversilobum (Torrey & A. Gray) E. Greene.  Poison oak.  Very abundant in low places, thickets, chaparral and woodland.  April-May.  Stebbins C354 (DAV).

 

APIACEAE.  Celery Family.

Angelica californica Jepson.  Angelica.  Dry slopes.  June.  Hundal 26 (DAV).  Stebbins s.n. (DAV).

Anthriscus caucalis M. Bieb.  Bur-chervil.  Native to Europe .  Disturbed areas, shady places.  April-June.  Stebbins 424 (DAV).

Apiastrum augustifolium Nutt.  Wild celery.  Chaparral.  March-April.  Stebbins C392 (DAV).  Willoughby W1315 (SACT).

Coriandrum sativum L.  Coriander, cilantro, Chinese parsley.  Native to southern Europe .  Disturbed areas.  May-July.  Willoughby W2394 (SACT).

Daucus pusillus Michaux.  Rattlesnake weed.  Rocky or sandy places.  April-June.  Curlette 155 (DAV).  Willoughby W749 (SACT).

Foeniculum vulgare Miller.  Fennel.  Roadside.  June-October.  Mawdsley 60 (DAV).

Ligusticum apiifolium (Nutt.) A. Gray.  Celery-leaved lovage.  Meadows, scrub or woods.  June-July.  Stebbins 000 (DAV).

Lomatium californicum (Torrey & A. Gray) Mathias & Constance.  California rock parsnip.  Woodland , brushy slopes.  April-June.  Stebbins C417 (DAV).  Willoughby W1292 (SACT).

Lomatium dasycarpum (Torrey & A. Gray) J. Coulter & Rose.  Lace parsnip.  Rocky chaparral, woodland.  March-June.  Stebbins 105 (DAV).

Lomatium macrocarpum (Torrey & A. Gray) J. Coulter & Rose.  Large lace parsnip. Rocky chaparral, woodland.  April-June.  Curlette 180 (DAV).  Stebbins C139 (DAV).

Lomatium utriculatum (Torrey & A. Gray) J. Coulter & Rose.  Bladder parsnip.  Open grassy slopes, meadows, woodland.  February-May.  Stebbins C397 (DAV).  Willoughby W1530 (SACT).

Perideridia kelloggii (A. Gray) Mathias.  Squaw root.  Open grassland.  July-August.  Mawdsley 64 (DAV).  Willoughby W974 (SACT).

Sanicula bipinnata Hook & Arn.  Poison sanicle.  Open grassland, pine-oak woodland.  April-May.  Stebbins C343 (DAV).  Willoughby W1200 (SACT).

Sanicula bipinnatifida Hook.  Purple sanicle. Open grassland, pine-oak woodland.  March-May.  Ertter 8211 (DAV).  Willoughby W1216 (SACT).

Sanicula crassicaulis DC.  Gamble weed.  Open slopes, woodlands.  March-May.  Curlette 185 (DAV).

Torilis arvensis ( Hudson ) Link.  Native to Europe .  Disturbed places.  May-June.  Stebbins C422 (DAV).  Lau 14 (DAV).

Torilis nodosa.  (L.) Gaertner  Hedge parsley.  Native to Europe .  Disturbed places.  April-June. Stebbins C423 (DAV).  Willoughby W1507 (SACT).

Yabea microcarpa (Hook. & Arn.) Koso-Polj.  Grassy slopes, chaparral, woodland.  March-June. Curlette 181 (DAV).  Willoughby W1314 (SACT).

 

ARISTOLOCHIACEAE.  Pipevine Family.

Aristolochia californica.  Torrey.  California pipe vine.  Streamsides, chaparral.  January-April.  Stebbins C309 (DAV).  DiTomaso 2018 (DAV).

 

ASCLEPIADACEAE.  Milkweed Family.

Asclepias cordifolia  (Benth.) Jeps.  Purple milkweed.  Rocky slopes, chaparral.  May-July.  Fort 21 (DAV).  Hrusa 10815 (DAV).

Asclepias fascicularis.  Decne.  Narrow-leaved milkweed.  Dry ground; foothills.  June-September.  Willoughby W981 (SACT).

 

ASTERACEAE.  Aster or Sunflower Family.

Achillea millefolium L.   Yarrow.  Open, grassy areas.  March-June.  Stebbins C377 (DAV).  Willoughby W726 (SACT)

Achyrachaena mollis Schauer.   Blowwives.  Grassy sites.  April-May.

Agoseris grandiflora  (Nutt.) Greene.  California dandelion.  Grasslands, shrubland, woodland.  May-July.

Agoseris heterophylla. (Nutt.) Greene.  Mountain dandelion.  Open, grassy slopes and flats.  March-May.  Stebbins C388 (DAV).  Willoughby W4495 (SACT).

Anthemis cotula.  L.  Mayweed.  Disturbed sites.  May-July.  Mawdsley 59 (DAV).

Artemisia douglasiana.  Besser.  Mugwort.  Open to shady places, often in drainages.  June-October.  Mawdsley 61 (DAV).

Aster radulinus.  A. Gray.  Broad-leaved aster.  Dry woods.  July-October.  Koutnik et al 587 (DAV).

Baccharis pilularis.  DC.  Coyote bush.  Common on hillsides and canyons.  August-December. Koutnik et al 581 (DAV).

Baccharis salicifolia. (Ruiz & Pav.) Pers.  Mule-fat.  Canyon bottoms, moist streamsides.  March-July.  Stebbins C381 (DAV).  Willoughby W1544 (SACT).

Brickellia californica. (Torr. & A. Gray) A. Gray.  Diverse dry habitats.  August-October.  Mawdsley 66 (DAV).

Calycadenia ciliosa Greene.  Rosin weed.  Open, dry meadows, hillsides.  June-September.

Calycadenia pauciflora A. Gray.  Small-flowered calycadenia.  Open, dry meadows, hillsides.  July-September.  Mawdsley 72 (DAV).

Carduus pycnocephalus L.  Italian thistle.  Native to southern Europe .  May-July.  Montoya 18 (DAV).  Willoughby W2415 (SACT).

Centaurea melitensis L.  Tocalote.  Native to Europe .  Disturbed fields, open woods.  April June.Curlette 166 (DAV).  Willoughby W963 (SACT).

Centaurea solstitialis L.  Yellow star thistle.  Native to southern Europe .  Pastures, disturbed grassland or woodland.  May-October.  Koutnik et al. 588 (DAV).

Chaenactis glabriuscula DC. var. heterocarpha (A. Gray) H.M. Hall.  Open slopes, ridges.  April-June.  Curlette 132 (DAV).  Willoughby W1517 (SACT).

Chamomilla suaveolens (Pursh) Rydb.  Pineapple weed. Disturbed sites, footpaths, grazed land.  April-August.  Stebbins C368 (DAV).  Willoughby W1347 (SACT).

Cirsium occidentale (Nutt.) Jeps. var. venustum (Greene) Jeps.  Grassland, woodland.  June-July.  Dean 511 (DAV).

Conyza canadensis (L.) Cronq.  Horseweed.  Disturbed sites.  September-October.  Mawdsley 68 (DAV).

Cotula australis (Sieber) Hook.  Brass buttons.  Native to Australia .  Disturbed sites.  January-May.  Willoughby W2413 (SACT).

Ericameria arborescens  (A. Gray) Greene.  Golden fleece.  Woodland, chaparral.  August-November.

Erigeron foliosus Nutt. var. hartwegii (Greene) Jeps.  Narrow-leaved daisy.  Grassy or brushy slopes.  May-July.

Erigeron inornatus A. Gray.  California rayless daisy.  Tops of ridges in rocks.  June-August. Dean 526, 527 (DAV).

Eriophyllum lanatum (Pursh) J. Forbes var. achillaeoides (DC.) Jeps.  Woolly sunflower.  Dry, often rocky sites.  May-July.  Curlette 178 (DAV).  Liolios 39 (DAV).

Euthamia occidentalis Nutt.  Western goldenrod.  Streambanks.  September-November.  Koutnik et al. 484 (DAV).  Mawdsley 69 (DAV).

Filago californica Nutt.  California filago.  Bare or grassy places, drainages.  March-June.  Stebbins C398 (DAV).  Willoughby W3061 (SACT).

Filago gallica L.  Narrow-leaved filago.  Native to Europe .  Bare or grassy places.  April-June.

Gnaphalium californicum DC.  Green cudweed.  Dry open or wooded hills.  January-July.  Stebbins C120 (DAV).

Gnaphalium canescens DC., ssp. beneolens (Davidson) Stebb. & Keil.  Fragrant everlasting.  Open dry areas.  June-September. Dean 547 (DAV).

Grindelia camporum Greene var. camporum.  Great Valley grindelia.  Fields, roadsides.  August-September.  Mawdsley 70 (DAV).

Gutierrezia californica (Pursh) J. Forbes.  San Joaquin matchweed.  Grasslands, slopes, outcrops.  December.  Hrusa 11576 (DAV).

Helianthella californica A. Gray.  California helianthella, perennial little sunflower.  Grasslands.  April-June.  Curlette 207 (DAV).  Liolios 37 (DAV).

Helianthus californicus DC.  California sunflower.  Dry, rocky soils, streambanks.  June-August.  Mawdsley 54 (DAV).

Hemizonia congesta DC. ssp. luzulaefolia .  Field tarweed.  Grasslands, fallow fields.  September-October.  Stebbins C137 (DAV).

Hesperevax acaulis  (Kellogg) Greene.   Sandy slopes, flats, sometimes burns.  M. Rejmanek.

Hesperevax sparsiflora  (A. Gray) Greene.  Sandy soils.  Dry, open areas.  March-May.  Stebbins C311 (DAV).

Hieracium albiflorum Hook.  White hawkweed.  Shaded banks. May-August. (Mawdsley and Weiss, pers. obs.)

Hypochoeris glabra L.   Smooth cat's-ear.  Native to Europe .  Disturbed sites.  May-June.  Curlette 129 (DAV).  Willoughby W743 (SACT).

Lactuca serriola L.  Prickly lettuce.  Native to Europe .  Disturbed open areas.  September-October.  Mawdsley 65 (DAV).

Lagophylla ramosissima Nutt.  Common hareleaf.  Dry habitats.  May-October.  Hrusa 12836 (DAV).  Willoughby W954 (SACT).

Madia elegans Lindley ssp. vernalis D.D. Keck.  Common madia.  Grassy sites, valleys, foothills.  March-June.Curlette 141 (DAV).

Madia exigua (Sm. ) A. Gray.   Threadstem madia.  Grasslands, open woodlands.  May-July.  Bowcutt 503 (DAV).

Madia gracilis (Sm. ) D.D. Keck. ssp. gracilis.  Slender tarweed.  Grasslands, woodlands.  April-August.  Curlette 135 (DAV).  Willoughby W976 (SACT).

Malacothrix floccifera (DC.) S.F. Blake.  Woolly malacothrix.  Open burns, chaparral.  May-June.  Stebbins C101 (DAV).

Micropus californicus F.E. Fisch. & C.A. Mey.  Slender cottonweed.  Dry or moist, bare or grassy sites.  March-June.  Curlette 194 (DAV).  Willoughby W1506 (SACT).

Psilocarphus tenellus Nutt.  Slender woollyheads.  Dry slopes, generally on disturbed soil.  April-June.  Stebbins C3112 (DAV).  Willoughby W1309 (SACT).

Rafinesquia californica Nutt.  California chicory.  Shrubby slopes, open woods, common after fires.  April-July.  Willoughby W2408 (SACT).

Rigiopappus leptocladus A. Gray.  Grassy areas or among shrubs.  April-June.Willoughby W3059 (SACT).

Senecio vulgaris L.  Annual groundsel.  Native to Europe .  Disturbed sites.  Flowers in most months.  Stebbins C304 (DAV).  Willoughby W1222 (SACT).

Silybum marianum (L.) Gaertn.  Milk thistle.  Native to southern Europe .  Roadsides, pastures, waste areas.  May-July.

Soliva sessilis Ruiz & Pav.  Common soliva.  Native to South America .  Disturbed sites.  March-June.  Ertter 8226 (DAV).  Willoughby W2406 (SACT).

Sonchus asper (L.) Hill ssp. asper.  Sow-thistle.  Native to Europe .  Slightly moist waste places.  Flowers in most months.  Stebbins C3106 (DAV).

Sonchus tenerrimus L.  Slender sowthistle.  Disturbed sites.

Stephanomeria virgata Benth. Ssp. plleurocarpa (E. Greene) Gottlieb. Twiggy wreath plant.  Dry, open slopes.  July-November.  Stebbins C138 (DAV).  Koutnik et al. 583 (DAV).

Uropappus lindleyi (DC.) Nutt.  Grassy areas, woods, chaparral.  April-June.Willoughby W1525 (SACT).

Wyethia helenioides (DC.) Nutt.  Foothill mule-ears.  Open grassland, shrubland.  March-May.  Stebbins C141 (DAV).  Willoughby W1500 (SACT).

 

BORAGINACEAE.  Borage Family.

Amsinckia  menziesii (Lehm.) A. Nelson & J.F. Macbr . var. intermedia (F.E. Fisch. & C.A. Mey.) Ganders.  Fiddleneck.  Open, generally disturbed sites.  March-June.  Stebbins C351 (DAV).  Ruport 12 (DAV).

Cryptantha flaccida F(Lehm.) Greene.  Flaccid cryptantha.  Open, dry sites.  April.  Stebbins C117 (DAV).  Willoughby W1519 (SACT).

Cynoglossum grande Lehm.  Large-leaved hound's tongue.  Shaded or open sites, woodland or chaparral.  March-June.  Curlette 101 (DAV).

Pectocarya pusilla ( A. DC .) A. Gray.  Little pectocarya.  Dry sites in grassland, woodland.  April. Hrusa 12837 (DAV).

Plagiobothrys canescens Benth.  Valley popcorn flower.  Grassland, woodlands.  March-May.Willoughby W3065 (SACT).

Plagiobothrys nothofulvus  (A. Gray) A. Gray.  Popcorn flower. Grassland, woodlands.  March-May.

Plagiobothrys tenellus (Nutt.) A.Gray.  Small popcorn flower.  Dry slopes in grassland, scrub, woodland.  March-May.  Stebbins C109 (DAV).

 

BRASSICACEAE.  Mustard Family.

Arabis modesta Rollins.  Modest rock cress.  Rocky hillsides, steep banks.  April-May.  Dean 670 (DAV)

Athysanus pusillus (Hook.) Greene.  Sandweed.  Grassy, open slopes, rocky outcrops.  March-June.  Stebbins C333 (DAV).  Willoughby W1305 (SACT).

Barbarea orthoceras Ledeb.  Damp meadows, streambanks, moist woods.  May-September.  Willoughby W1329 (SACT).

Barbarea vulgaris R. Br.  Winter-cress.  Native to Eurasia .  Disturbed sites.  April-May.

Brassica juncea  (L.) Czernov.  Fields, disturbed sites.  April.  Frost 2 (DAV).

Brassica nigra (L.) Koch.  Black mustard.  Native to Europe .  Fields, disturbed sites.  April-June. Curlette 131 (DAV).

Capsella bursa-pastoris (L.) Medikus.  Shepherd's-purse.  Native to Europe .  Disturbed sites.  Flowers all year.  Stebbins CC323 (DAV).  Graham 2 (DAV).

Cardamine californica (Torr. & A. Gray) Greene var. integrifolia (Torr. & A. Gray) Rollins.  California toothwort, milkmaids.  Shaded sites, canyons, woods.  February-April.  Stebbins C306 (DAV).  Hrusa 10520 (DAV).

Cardamine oligosperma Torr. & A. Gray.  Annual bittercress.  Shady banks, creek bottoms.  March-July.  Willoughby W1306 (SACT).

Cardamine pennsylvanica Willd.  Pennsylvania bittercress.  Shady banks, creek bottoms.  May-June.  Willoughby W1224 (SACT).

Cardaria draba (L.) Desv.  Hoary-cress.  Native to Europe .  Disturbed sites.  March-June.  Stebbins C115 (DAV).  Willoughby W1501 (SACT).

Descurainia sophia (L.) Webb.  Tansy-mustard.  Native to Eurasia .  Disturbed sites.  Willoughby W2405 (SACT).

Draba verna L.  Whitlow-grass.  Native to Europe .  Open or disturbed sites.  February-May. 

Erysimum capitatum  ( Douglas ) Greene .  Wallflower.  Many habitats, frequent.  March-July.  Stebbins C338 (DAV).  Curlette 197 (DAV).

Guillenia lasiophylla  (Hook. & Arn.) Greene.  California mustard.  Dry, open, sometimes disturbed sites.  March-June.  Preston 439 (DAV).  Willoughby W2409 (SACT).

Hirschfeldia incana (L.) Lagr.-Fossat.   Short pod mustard.  Native to Eurasia .  Creekbottoms, disturbed sites.  May-October.  Chally 23 (DAV).  Willoughby W989 (SACT).

Lepidium strictum (S. Watson) Rattan.   Peppergrass.  Native to South America .  Disturbed sites.  March-May.  Stebbins C377 (DAV).

Sinapis arvensis L.  Charlock.  Native to Eurasia .  Disturbed sites.  March-October.  Willoughby W1319 (SACT).

Sisymbrium altissimum L.  Tumble-mustard.  Native to Europe .  Disturbed sites, fields.  May-July.  Stebbins C116 (DAV).

Sisymbrium officinale L.  Hedge-mustard.  Native to Europe .  Disturbed sites.  April-July.  Willoughby W1504 (SACT).

Thysanocarpus curvipes Hook.  Lace pod.  Slopes, moist meadows.  March-May.  Stebbins C336 (DAV).  Willoughby W1299 (SACT).

Tropidocarpum gracile Hook.  Keel-pod.  Grassy slopes and open areas.  March-May.  Willoughby W1325 (SACT).

 

CALYCANTHACEAE.  Calycanthus Family.

Calycanthus occidentalis Hook. & Arn.  Spice bush.  Moist canyon floors and streams.  April-August.  Stebbins C426 (DAV). 

 

CAMPANULACEAE.  Bellflower Family.

Githopsis specularioides Nutt.  Common blue cup.  Chaparral, oak woodlands.  April-June.  Mawdsley 36 (DAV).

Triodanis biflora (Ruiz & Pav.) Greene.  Venus looking-glass.  Disturbed sites.  April-June. 

 

CAPRIFOLIACEAE.  Honeysuckle Family.

Lonicera interrupta Benth.  Chaparral honeysuckle.  Dry slopes, ridges.  May-July.  Willoughby W953 (SACT).

Sambucus mexicana C. Presl.  Blue elderberry.  Streamnanks.  March-September.  Stebbins C383 (DAV.  Willoughby W748 (SACT).

Symphoricarpos mollis Nutt.  Trailing snowberry.  Ridges, slopes.  April-June. 

 

CARYOPHYLLACEAE.  Pink Family.

Cerastium glomeratum Thuill. Mouse-ear chickweed.  Native to Europe .  Dry hillsides, grasslands, chaparral, disturbed sites.  February-May.  Stebbins C107 (DAV).  Willoughby W1220 (SACT).

Minuartia douglasii (Torrey & A. Gray) Mattf. Douglas ’ sandwort.  Slopes in chaparral.  April-June. (Weiss, pers. obs. 2001)

Petrorhagia dubia (Raf.) G. Lopez & Romo.  Native to Europe .  Disturbed sites, woodland savanna.  May.  Stebbins C395 (DAV).

Sagina apetala Ard.  Dwarf pearlwort.  Sandy waste areas, streamsides.  May.  Stebbins C248 (DAV).

Silene gallica L.  Common catchfly.  Native to Europe .  Fields, disturbed sites.  February-June.  Stebbins C385 (DAV).  Willoughby W763 (SACT).

Stellaria media (L.) Vill.  Common chickweed.  Native to Europe .  Oak woodlands, meadows, disturbed sites.  March-June.  Stebbins C324 (DAV).

Stellaria nitens Nutt.  Shining chickweed.  Streambanks, open woodlands, disturbed sites.  March-June.  Stebbins C334 (DAV).

 

CHENOPODIACEAE.  Goosefoot Family.

Chenopodium californicum (S. Watson) S. Watson.  Perennial goosefoot.  Open sites.  March-June.  Willoughby W2395 (SACT).

 

CISTACEAE.  Rock-rose Family.

Helianthemum scoparium Nutt.  Peak rush-rose.  Rocky slopes and ridges.  March-June.  Stebbins C119 (DAV).

 

CONVOLVULACEAE.  Morning-glory Family.

Calystegia occidentalis (A. Gray) Brummitt.  Dry slopes, chaparral.  May-June.  Weyandt 11 (DAV).

Calystegia purpurata (Greene) Brummitt ssp. purpurata.  Solano morning-glory, bindweed.  Chaparral.  May-July.  Hrusa 12833 (DAV).  Willoughby W734 (SACT).

 

CORNACEAE.  Dogwood Family.

Cornus glabrata Benth.  Brown dogwood.  Moist areas.  May-July.  Stebbins C130 (DAV).

 

CRASSULACEAE.  Stonecrop Family.

Crassula connata Ruiz & Pav.  Sand pygmy.  Open areas.  February-May. 

Crassula tillaea Lester-Garl.  Mediterranean sand pygmy.  Native to Europe .  Open, gravelly sites.  Rare.  March-April.  Willoughby W1298 (SACT).

Dudleya cymosa. (Lemaire) Britton & Rose.   Canyon live-forever.  Rocky outcrops.  April-June.  Warrick 30 (DAV).

 

CUCURBITACEAE.  Gourd Family.

Marah fabaceus (Naudin) Greene var. agrestis (Greene) K.M. Stocking.  Common manroot, wild cucumber.  Streamsides, shrubby and open areas.  February-April.  Stebbins C348 (DAV).  Willoughby W1293 (SACT).

Marah watsonii (Cogn.) Greene.  Watson's manroot, bigroot.  Shrubby sites.  March-April.  Stebbins C332 (DAV).  Willoughby W3062 (SACT).

 

CUSCUTACEAE.  Dodder Family.

Cuscuta californica Hook & Arn.  California dodder.  Chaparral, grassland.  Parasitic on many herbaceous and woody plants.  May-August.  Stebbins C121 (DAV).

 

DATISCACEAE.  Datisca Family.

Datisca glomerata (C. Presl) Baillon.  Durango root.  Dry stream beds.  May-July.  Stebbins C411 (DAV).  Willoughby W725 (SACT).

 

ERICACEAE.  Heath Family.

Arbutus menziesii Pursh.  Pacific madrone.  Oak, pine woodlands.  March-May. 

Arctostaphylos glandulosa Eastw. ssp. glandulosa.  Eastwood manzanita.  Slopes, ridges, chaparral.  January-April.  Willoughby W744 (SACT).

Arctostaphylos manzanita Parry.   Parry manzanita.  Slopes, chaparral, woodland.  February-April.  Stebbins C301 (DAV).

 

EUPHORBIACEAE.  Spurge Family.

Eremocarpus setigerus (Hook.) Benth.  Doveweed, turkey mullein.  Common in dry, open areas.  May-October.  Mawdsley 74 (DAV).

Euphorbia crenulata Engelm.  Chinese caps, spurge.  Common in dry areas.  March-August. 

Euphorbia spathulata Lam.  Spurge.  Occasional in open and disturbed areas.  March-June.  Willoughby W1349 (SACT).

 

FABACEAE.  Pea Family.

Astragalus gambelianus E. Sheldon.  Gambel’s dwarf locoweed.  Open, grassy sites, shrubland.  March-June. 

Cercis occidentalis Torrey.   Western redbud.  Dry slopes, canyons, streamsides, chaparral.  February-April.  Stebbins C330 (DAV).  Willoughby W747 (SACT).

Hoita macrostachya (DC.) Rydb.  Leather root.  Streamsides, spring-moist sites.  July-August.  Mawdsley 53 (DAV).  Dean 534 (DAV).

Lathyrus vestitus Nutt. var. vestitus.  Pacific peavine.  Chaparral, oak woodland.  April-June.  Stebbins C110 (DAV).   Willoughby W1342 (SACT).

Lotus crassifolius (Benth.) Greene.  Buck lotus.  Chaparral, pine woodland, disturbed sites.  May-August.  Jepson 2452B (JEPS).

Lotus humistratus Greene.  Hill lotus.  Grassland, oak, pine woodland.  March-June.  Stebbins C3105 (DAV).  Hrusa 10784 (DAV).

Lotus micranthus Benth.  Pink-flowered lotus.  Open flats, fields and slopes.  March-May.  Stebbins C140 (DAV).  Willoughby W1532 (SACT).

Lotus purshianus  (Benth.) Clem. & E.G. Clem. var. purshianus.  Spanish lotus.  Chaparral, disturbed sites.  June.  Curlette 126 (DAV).

Lotus scoparius (Nutt.) Ottley.  Califonria broom, deerweed.  Chaparral, roadsides.  March-August.  Stebbins C412 (DAV).  Willoughby W971 (SACT).

Lotus wrangelianus F.E. Fisch. & C.A. Mey.  Smooth hill lotus.  Chaparral, disturbed sites.  March-September.  Stebbins C387 (DAV).  Willoughby W1322 (SACT).

Lupinus albifrons Benth.  Bush lupine.  Open sand or rocks.  March-June.  Stebbins C350 (DAV).  Willoughby W1513 (SACT).

Lupinus bicolor Lindl.  Miniature lupine.  Open or disturbed sites.  March-June.  Stebbins C145 (DAV).  Willoughby W1554 (SACT).

Lupinus microcarpus Sims var. densiflorus (Benth.) Jeps.  White-whorled lupine.  Open, or disturbed sites.  April-June.  Stebbins C3103 (DAV).  Willoughby W745 (SACT).

Lupinus succulentus. Koch.  Fleshy lupine.  Open or disturbed sites.  February-May.  Stebbins C106 (DAV).

Medicago polymorpha L.  Bur clover.  Native to Europe .  Disturbed sites.  March-June.  Stebbins C382 (DAV).  Willoughby W762 (SACT).

Melilotus albus Medikus.  White sweet clover.  Native to Eurasia .  Open, disturbed sites.  May-September.  Mawdsley 55 (DAV).  Willoughby W978 (SACT).

Melilotus indicus (L.) All.  Yellow sweet clover.  Native to Eurasia .  Open, disturbed sites.  April-October.  Curlette 149 (DAV).  Willoughby W970 (SACT).

Pickeringia montana Nutt.  Chaparral pea.  Chaparral, open woodlands.  April-May. 

Rupertia physodes (Hook.) J.W. Grimes.  California tea.  Woodlands.  May-July.  Stebbins C413 (DAV).  Tucker 3943 (DAV).

Trifolium albopurpureum Torr. & A. Gray.  Rancheria clover.  Grasslands, chaparral, pine woodlands.  March-April.  Hrusa 10777 (DAV).  Curlette 202 (DAV).

Trifolium ciliolatum Benth.  Tree clover.  Grasslands, chaparral, disturbed sites.

Trifolium gracilentum Torr. & A. Gray.  Slender clover.  Open, disturbed sites.  April.  Stebbins C143 (DAV).

Trifolium hirtum All.  Rose clover.  Native to Eurasia .  Disturbed sites.  March-May.  Stebbins C3104 (DAV).  Curlette 156 (DAV).

Trifolium microcephalum Pursh.  Small-headed clover.  Streambanks, moist, disturbed sites.  March.  Hrusa 10789 (DAV).  Curlette  204 (DAV).

Trifolium oliganthum Steud.  Few-flowered clover.  Woody or shrubby slopes.  April.  Hrusa 12831 (DAV).

Trifolium willdenovii Spreng.  Tomcat clover.  Disturbed, spring-moist soils.  March-May.  Stebbins C370 (DAV).  Curlette 203 (DAV).

Vicia sativa L.  Common vetch.  Native to Europe .  Disturbed sites.  April-May.  Stebbins C369 (DAV).  Curlette 170 (DAV).

 

FAGACEAE.  Oak Family.

Quercus berberidifolia Liebm.  Scrub oak.  Dry slopes, chaparral.  April.  Stebbins C362 (DAV).

Quercus douglasi Hook. & Arn.  Blue oak.  Interior foothills, woodland.  April-May. 

Quercus wislizeni  A.DC.  Interior live oak.  Foothill woodland.  April-May.  Lau 5

 

GARRYACEAE.  Silk Tassel Family.

Garrya fremontii Torr.  Silk tassel.  Chaparral, foothill woodland.  March.  Hrusa 7579 (DAV).

 

GERANIACEAE.  Geranium Family.

Erodium botrys (Cav.) Bertol.  Long-beaked filaree.  Native to Europe .  Dry, open or disturbed sites.  March-May. 

Erodium brachycarpum (Godr.) Thell.  Native to southern Europe .  Dry, open or disturbed sites.  February-May.  Stebbins C328 (DAV).

Erodium cicutarium (L.) L'Her.  Red-stemmed filaree.  Native to southern Europe .  Open, disturbed sites, grassland, shrubland.  Common.  February-May.  Curlette 136 (DAV).

Erodium moschatum (L.) L'Her.  White-stemmed filaree.  Native to southern Europe .  Common in disturbed sites.  February-May.  Stebbins C318 (DAV).  Willoughby W1204 (SACT).

Gernanium dissectum L.  Native to Europe .  Open, disturbed sites.  May.  Stebbins C125 (DAV).

Geranium molle L.  Annual cranesbill.  Native to Europe .  Open to shaded disturbed sites.  May-July.  Stebbins S347 (DAV).  Willoughby W1205 (SACT).

 

GROSSULARIACEAE.  Gooseberry Family.

Ribes malvaceum Sm.  Chaparral currant.  Chaparral, oak woodland.  October-March.  Stebbins C303 (DAV).  Willoughby W1333 (SACT).

Ribes victoris E. Greene.  Victor’s gooseberry.  Chaparral. Curlette 122 (DAV).

 

HIPPOCASTANACEAE.  Buckeye Family.

Aesculus californica (Spach) Nutt.  California buckeye.  Along drainages, sides of streams.  May-June.  Curlette 175 (DAV).  Winthrop 5 (DAV).

 

HYDROPHYLLACEAE.  Waterleaf Family.

Emmenanthe penduliflora Benth.  Whispering bells.  Dry, open slopes, often after burns.  May-June.   Curlette 164 (DAV).  Mawdsley 33 (DAV).

Eriodictyon californicum (Hook. & Arn.) Torr.  Yerba santa.  Fields, woodland, chaparral.  April-July.  Stebbins C3102 (DAV).  Curlette 143 (DAV).

Eucrypta chrysanthemifolia (Benth.) E. Greene.  Common eucrypta. Chaparral, disturbed sites.  March-June.  Ertter 8205 (DAV).  Willoughby W1301 (SACT).

Nemophila heterophylla F.E. Fisch. & C.A. Mey.  Vari-leaf nemophila.  Partly shaded slopes, chaparral, streambanks. March-July.  Ertter 8208 (DAV).  Willoughby W1223 (SACT).

Nemophila pedunculata Benth.  Meadow nemophila.  Grasslands, woodlands, streambanks.  April-August.  Stebbins C112 (DAV).

Phacelia cicutaria E. Greene.  Caterpillar phacelia.  Slopes, grassland, chaparral, oak/pine woodland.  March-May. 

Phacelia imbricata E. Greene.  Imbricate phacelia.  Slopes, chaparral, woodland.  March-June.  Curlette 187 (DAV).  Willoughby W750 (SACT).

Phacelia tanacetifolia Benth.  Tansy phacelia.  Slopes, open areas.  Rare.  March-May.  Stebbins C352 (DAV).  Willoughby W3064 (SACT).

 

HYPERICACEAE.  St. John’s Wort Family.

Hypericum perforatum L.  Klamathweed.  Native to Europe.  Pastures, disturbed sites.  June-July.  Mawdsley 48 (DAV).

Hypericum concinnum Benth.  Gold-wire.  Dry shrubby slopes.  May-July. Weiss s.n. (DAV)

 

JUGLANDACEAE.  Walnut Family.

Juglans californica S. Watson var. hindsii Jeps.  Black walnut.  Shaded slopes, drainages.  April-May.  Mawdsley 62 (DAV).  Willoughby W732 (SACT).

 

LAMIACEAE.  Mint Family.

Lamium amplexicaule L.  Henbit.  Native to Europe.  Disturbed sites, former fields or homesteads.  March-August.

Lepechinia calycina (Benth.) Epling.  Pitcher sage.  Open slopes, chaparral, woodland.  April-June.  Jepson 2452C (JEPS).  Willoughby W754 (SACT).

Marrubium vulgare L.  Hoarhound.  Native to Europe.  Disturbed sites.  March-August.  Stebbins C3110 (DAV).  Curlette 173 (DAV).

Mentha pulegium .  Pennyroyal.  Native to Europe.  Moist areas.  June-July.  Dean 531 (DAV).

Mentha spicata L. var. spicata.  Spearmint.  Native to Europe.  Moist sites.  July-October.

Monardella villosa Benth.  Coyote mint.  Rocky slopes, chaparral, oak woodland.  June-August.  Major 545 (DAV).  Mawdsley 58 (DAV).

Salvia columbariae Benth.  Chia.  Dry, disturbed sites, chaparral.  March-June.  Hrusa 10781 (DAV).  Willoughby W1511 (SACT).

Scutellaria tuberosa Benth.  Tuberous skullcap.  Chaparral, oak woodland, common after fires.  March-July.  Stebbins C3109 (DAV).

Stachys ajugoides Benth var.  rigida (Benth.) Jeps. & Hoover.  Hedge nettle.  Generally moist sites, sometimes dry hillsides.  July-August.  Stebbins C3113 (DAV).

 

LAURACEAE.  Laurel Family

Umbellularia californica (Hook. & Arn.) Nutt.  California bay or laurel.  Shaded slopes, drainages, chaparral.  December-May.  Stebbins C302 (DAV).  Ruport 18 (DAV).

 

MALVACEAE.  Mallow Family.

Malva nicaeensis All.  Bull mallow.  Native to Eurasia.  Disturbed sites.  March-September.  Willoughby  W2414 (SACT).

Malva parviflora L.  Cheeseweed.  Native to Eurasia.  Disturbed sites.  Flowers most of the year.  Willoughby W2414 (SACT).

Sidalcea diploscypha (Torr. & A. Gray) Benth.  Fringed sidalcea.  Grassland, open woodland.  April-June.  Willoughby W777 (SACT).

 

OLEACEAE.  Olive Family.

Fraxinus dipetala Hook & Arn.  Flowering ash.  Slopes, chaparral, oak/pine woodland.  April-May.  Stebbins C399 (DAV).  Willoughby W2400 (SACT).

 

ONAGRACEAE.  Evening Primrose Family.

Clarkia affinis H.F. & M.E. Lewis.  Openings in chaparral.  April-May.  Curlette 140 (DAV).  Elmstrom 17 (DAV).

Clarkia concinna (F.E. Fisch. & C.A. Mey.) Greene.  Red ribbons.  Woodland.  May-July.  Curlette 162 (DAV).  Willoughby W721 (SACT).

Clarkia purpurea (Curtis) A. Nelson & J.F. Macbr. ssp. quadrivulnera (Douglas) F.H. Lewis & M.R. Lewis.  Four-spot.  Open, grassy or shrubby sites.  April-July.  Liolios 33 (DAV).  Willoughby W720 (SACT).

Clarkia unguiculata Lindl.  Elegant clarkia.  Dry, often shaded slopes.  May-June.  Curlette 160 (DAV).  Willoughby W753 (SACT).

Epilobium brachycarpum C. Presl.  Annual willow-herb.  Open, dry grassland, woodland, disturbed sites.  June-September.  Mawdsley 67 (DAV).

Epilobium canum (Greene) P.H. Raven ssp. canum.  California fuchsia, hummingbird trumpet.  Dry, rocky sites.  August-November.  Hrusa 7300 (DAV).  Koutnik et al 582 (DAV).

Epilobium minutum Lehm.  Chaparral willow-herb.  Open, dry disturbed sites.  April-August.

 

OROBANCHACEAE.  Broomrape Family.

Orobanche bulbosa G. Beck.  Chaparral broomrape.  Openings in chaparral.   Parasite of Adenostoma fasciculatum.  April-July. 

Orobanche californica Cham. & Schltdl.  California broomrape.  Generally dry, rocky areas.  May-June.  Stebbins C124 (DAV).

Orobanche fasciculata Nutt.  Clustered broomrape.  Dry, generally bare sites.  Occasional parasite of Artemisia, Eriogonum, Eriodictyon, etc.  April-July.  Willoughby W4196 (SACT).

Orobanche uniflora L.  Naked broomrape.  Generally moist sites.  Parasite of Saxifraga.  March-May.  Stebbins C366 (DAV).

 

PAPAVERACEAE.  Poppy Family.

Eschscholzia caespitosa Benth.  Annual California poppy.  Open chaparral.  March-June.  Stebbins

 C391 (DAV).  Willoughby W723 (SACT).

Eschscholzia californica Cham.  California golden poppy.  Grassy, open areas.  February-September.  Chally 14 (DAV).  Klapp 8 (DAV).

 

PHILADELPHACEAE.  Mock Orange Family.

Whipplea modesta Torr.  Yerba de selva.  Shaded slopes.  April-June. 

 

PLANTAGINACEAE.  Plantain Family.

Plantago erecta E. Morris.  Annual plantain.  Grassy slopes and flats, open woodland.  April.  Hrusa 10791 (DAV).

 

POLEMONIACEAE.  Phlox Family.

Allophylum divaricatum (Nutt.) A.D. Grant & V.E. Grant.  Pink false gilia.  Chaparral, woodland, particularly following a fire.  April-June.  Stebbins C393 (DAV).

Allophylum gilioides (Benth.) A.D. Grant & V.E. Grant.  Blue false gilia.  Open, damp or grassy sites.  April-June. 

Collomia heterophylla Hook.  Vari-leaf collomia.  Open sites.  April-June.  Stebbins C384 (DAV).

Gilia capitata Sims.  Blue-headed gilia.  Open, dry slopes.  May-July.  Curlette 165 (DAV).

Gilia clivorum (Jeps.) V.E. Grant.  Many-stemmed gilia.  Open, grassy sites.  March-April.  Stebbins C133 (DAV).  Hrusa 10786 (DAV).

Gilia tricolor Benth.  Bird's eyes.  Open grasslands, slopes.  March-April. 

Linanthus androsaceus (Benth.) Greene.  False baby stars.  Open or shaded areas, chaparral, woodland.  April-June.  Stebbins C356 (DAV).  Willoughby W772 (SACT).

Linanthus bicolor (Nutt.) Greene.  True baby stars.  Open grassland and woodland.  March-June.  Stebbins C355 (DAV).  Willoughby W1312 (SACT).

Linanthus ciliatus (Benth.) Greene.  Whisker brush.  Dry open or wooded sites.  March-July.  Stebbins C102 (DAV).  Willoughby W771 (SACT).

Navarretia mellita E. Greene.  Honey-scented navarretiaOpen sandy or gravelly sites, chaparral.  July.  Mawdsley 49 (DAV).

Navarretia pubescens (Benth.) Hook. & Arn.  Downy navarretia.  Open slopes.  May-July.  Curlette 127 (DAV).  Willoughby W735 (SACT).

Navarretia viscidula Benth.  Sticky navarretia.  Open flats near water.  May-July.  Stebbins C205 (DAV).  Dean 502 (DAV).

Phox gracilis (Hook.) E. Greene.  Slender phlox.  Dry to moist sites.  March-August. 

 

POLYGONACEAE.  Buckwheat Family.

Chorizanthe membranacea Benth.  Pink spineflower.  Grassland, chaparral, foothill woodland.  April-July.  Stebbins C103 (DAV).  Willoughby W1523 (SACT).

Eriogonum dasyanthemum Torr. & A. Gray.  Many-flowered buckwheat.  Sand.  June-October.  Stebbins C126 (DAV).  Hrusa 11438 (DAV). 

Eriogonum nudum Benth.  Naked buckwheat.  Dry rocky areas.  June-November. 

Pterostegia drymarioides F.E. Fisch. & C.A. Mey.  Shady, moist sites.  March-July.  Hrusa 10780 (DAV).  Willoughby W1310 (SACT).

Rumex acetosella L. Sheep sorrel.  Native to Eurasia.  Moist, disturbed sites.  March-August. 

Rumex crispus L.  Curly dock.  Native to Eurasia. Disturbed sites.  Flowers most of the year.  Liolios 40 (DAV).  Wong 30 (DAV).

 

PORTULACACEAE.  Purslane Family.

Calandrinia breweri S. Watson.  Brewer’s calandrinia.  Disturbed sites, burns.  March-June.  Willoughby W4201 (SACT).

Calandrinia ciliata (Ruiz & Pav.) DC.  Red maids.  Open, grassy sites.  February-May. 

Claytonia parviflora Hook. ssp. parviflora.  Moist, often disturbed sites.  March.  Curlette 145 (DAV).

Claytonia perfoliata Willd.  Miner's lettuce.  Common in grassy or disturbed sites.  February-May.  Stebbins C314 (DAV).  Willoughby W1208 (SACT).

 

PRIMULACEAE.  Primrose Family.

Anagallis arvensis L.  Scarlet pimpernel.  Native to Europe.  Common in disturbed areas.  March-July.  Stebbins C396 (DAV).  Willoughby W1213 (SACT).

Dodecatheon hendersonii A. Gray.  Henderson's shooting star, sailor caps.  Shady sites.  February-May.  Stebbins C305 (DAV).  Willoughby W727 (SACT).

 

RANUNCULACEAE.  Buttercup Family.

Clematis lasiantha Nutt.  Virgin's bower.  Hillsides, chaparral, open woodland.  March-May.  Stebbins C361 (DAV).  Willoughby W730 (SACT).

Delphinium hesperium A. Gray ssp. pallescens (Ewan) F.H. Lewis & Epling.  Foothill delphinium.  Oak woodland.  April-June.  Stebbins C3101 (DAV).  Willoughby W3050 (SACT).

Delphinium nudicaule Torr. & A. Gray.  Canyon delphinium.  Moist wooded, rocky slopes.  March-June.  Stebbins C358 (DAV).  Willoughby W1337 (SACT).

Delphinium patens Benth.  Zigzag delphinium.  Grassland, woodland.  March-May.  Stebbins C339 (DAV).  Willoughby W1514 (SACT).

Ranunculus hebecarpus Hook. & Arn.  Pubescent-fruited buttercup.  Shaded sites, chaparral, oak/pine woodland.  March-May.  Stebbins C367 (DAV).  Willoughby W1209 (SACT).

Ranunculus occidentalis Nutt.  Western buttercup.  Flats, open woodland.  March-May.  Stebbins C307 (DAV).

 

RHAMNACEAE.  Buckthorn Family.

Ceanothus cuneatus (Hook.) Nutt.  Buck brush.  Dry slopes and fans.  March-May.  Stebbins C414 (DAV).  Willoughby W1345 (SACT).

Ceanothus oliganthus Nutt. var. sorediatus (Hook. & Arn.) C.L. Schmidt.  Jim brush.  Dry, shrubby slopes.  February-May.  Stebbins C342 (DAV).  Willoughby W727 (SACT).

Rhamnus californica Eschsch.  Coffeeberry.  Chaparral, woodlands.  May-July.  Curlette 172 (DAV).

Rhamnus crocea Nutt.  Redberry. Chaparral, woodlands.  March-April..Willoughby W2401 (SACT).

 

ROSACEAE.  Rose Family.

Adenostoma fasciculatum Hook. & Arn.  Chamise.  Common on dry slopes and ridges, chaparral   May-June.  Stebbins C418 (DAV).  Curlette 151 (DAV).

Aphanes occidentalis (Nutt.) Rydb.  Western lady’s mantle.  Seasonally moist grassland, chaparral.  March-June.  Willoughby W1332 (SACT).

Cercocarpus betuloides Torr. & A. Gray.  Mountain mahogany.  Chaparral, oak/pine woodland.  March-May. 

Heteromeles arbutifolia (Lindl.) Roem.  Toyon.  Chaparral, oak woodland.  April-July.  Chally 17 (DAV).  Willoughby W984 (SACT).

Holodiscus discolor (Pursh) Maxim.  Ocean spray, cream bush.  Woodland, rocky slopes.  May-August.  Stebbins C207 (DAV).

Potentilla glandulosa Lindl.  Sticky cinquefoil.  Dry to moist sites, many habitats.  May-July.  Willoughby W4169 (SACT).

Rosa californica Cham. & Schltdl.  California wild rose.  Moist sites, esp. streambanks.  May-August.  Stebbins C131 (DAV).  Willoughby W958 (SACT).

Rosa gymnocarpa Nutt.  Wood rose.  Shaded woods, shrublands.  March-July.  Curlette 193 (DAV).

Rubus ursinus Cham. & Schltdl.  California blackberry.  Moist shrublands, streamside.  May.  Stebbins C310 (DAV).

 

RUBIACEAE.  Madder Family.

Galium aparine L.  Cleavers.  Native to Europe.  Grassy, partly shaded places.  March-July.  Stebbins 113 (DAV).  Willoughby W1206 (SACT).

Galium bolanderi A. Gray.  Bolander's bedstraw.  Chaparral.  May-August.  Baker 21 (DAV).

Galium murale (L.) All.  Tiny bedstraw.  Native to Europe.  Damp places, grassy hillsides.  April-May.  Hrusa 12830 (DAV).  Willoughby W4498 (SACT).

Galium parisiense L.  Wall bedstraw.  Native to Europe.  Warm, dry, gen. rocky soil.  April-August.  Willoughby W967 (SACT).

Galium porrigens Dempster.  Climbing bedstraw.  Among shrubs in chaparral.  June.  Stebbins C344 (DAV).  Willoughby W731 (SACT).

 

SALICACEAE.  Willow Family.

Populus fremontii S. Watson ssp. fremontii.  Fremont cottonwood.  Moist sites and streamside.  March-April.  Chally 21 (DAV).

Salix exigua Nutt.  Sandbar willow.  Common along streams and arroyos.  March-May.  Stebbins C142 (DAV).  Willoughby W1545 (SACT).

Salix laevigata Bebb.  Red willow.  Streambanks.  Willoughby W769 (SACT).

Salix lasiolepis Benth.  Arroyo willow.  Common along stream banks and beds.  February-April. 

Salix melanopsis Nutt.  Dusky willow.  Stream banks.  March-May.  Dean 532, 539 (DAV). Willoughby W755 (SACT).

 

SAXIFRAGACEAE.  Saxifrage Family.

Lithophragma heterophyllum (Hook. & Arn.) Torr. & A. Gray.  Hill star.  Shaded slopes.  March-June.  Stebbins C118 (DAV).  Willoughby W1221 (SACT).

Saxifraga californica E. Greene.  California saxifrage.  Moist, shady sites.  February-June.  Stebbins C320 (DAV).  Curlette 123 (DAV).

 

SCROPHULARIACEAE.  Figwort Family.

Antirrhinum vexillo-calyculatum Kellogg.  Wiry snapdragon.  Lower slopes of rockslides, disturbed sites.  Uncommon.  May-November.  Stebbins C127 (DAV).  Hrusa 12480 (DAV).

Castilleja affinis Hook. & Arn.  Coast paintbrush.  Dry places in chaparral   April-May.  Hrusa 10816 (DAV).  Warrick 3 (DAV).

Castilleja applegatei Fernald ssp. martinii (Abrams) Chuang & Heckard.  Martin’s Indian paintbrush.  Dry, open scrub slopes.  May-September.  Stebbins C111 (DAV).  Willoughby W2402 (SACT).

Castilleja attenuata (A. Gray) Chuang & Heckard.  Valley tassels.  Grassland.  March-May.  Stebbins C345 (DAV).  Willoughby W1539 (SACT).

Castilleja exserta (A. Heller) Chuang & Heckard.  Purple owl’s-clover.  Open fields, grassland.  March-May.  Willoughby W3053 (SACT).

Castilleja foliolosa Hook & Arn.  Woolly paintbrush.  Dry open, rocky areas, chaparral.  March-June.  Stebbins C379 (DAV).  Willoughby W960 (SACT).

Collinsia heterophylla Buist.  Chinese houses.  Common in shaded sites.  March-June.  Stebbins C384 (DAV).  Willoughby W761 (SACT).

Collinsia sparsiflora F.E. Fisch. & C.A. Mey.  Spinster’s blue-eyed Mary.  Grassy, disturbed sites, chaparral.  March-May.  Stebbins C325 (DAV).  Willoughby W1305 (SACT).

Keckiella lemmonii (A. Gray) Straw.  Lemmon's penstemon.  Chaparral, wooded slopes.  June-August.  Gamon s.n. (DAV).  Willoughby W986 (SACT).

Mimulus aurantiacus Curtis.  Bush monkey flower.  Rocky slopes, disturbed sites, borders of chaparral.  March-August.  Stebbins C3110 (DAV).  Curlette  159 (DAV).

Mimulus cardinalis Benth.  Scarlet monkey flower.  Moist to wet sites along streams.  April-October.  Stebbins C128 (DAV).  Dean 540 (DAV).

Mimulus guttatus DC.  Seepspring monkey flower.  Wet places.  March-August.  Stebbins C425 (DAV).  Willoughby W3067 (SACT).

Pedicularis densiflora Hook.  Indian warrior.  Dry chaparral, oak/pine woodland.  January-June.  Stebbins C326 (DAV).  Willoughby W1341 (SACT).

Penstemon heterophyllus Lindl.  Foothill penstemon.  Grassland, chaparral.  April-July.  Mawdsley 57 (DAV).  Willoughby W1341 (SACT).

Scrophularia californica Cham. & Schltdl.  California figwort.  Common in + damp areas, chaparral.  February-July.  Stebbins C416 (DAV).  Curlette 192 (DAV).

Tonella tenella (Benth.) A. Heller.  Small-flowered tonella.  Moist shaded sites.  March-May.  Baldwin 458 (Dav).

Triphysaria pusilla (Benth.) Chuang & Heckard.  Dwarf orthocarpus.  Grassland.  April-May.  Stebbins  C376 (DAV).

Veronica persica Poir.  Persian speedwell.  Native to Europe.  Fields, disturbed sites.  February-May.  Willoughby W1324 (SACT).

 

SOLANACEAE.  Night shade Family.

Solanum xantii A. Gray.  Purple nightshade.  Shrubland, oak/pine woodland.  February-July.  Stebbins C341 (DAV).  Willoughby W1294 (SACT).

 

VALERIANACEAE.  Valerian Family.

Plectritis ciliosa.  Long-spurred plectritis.  Open, partly shaded slopes.  March-May.

Plectritis congesta.  Short-spurred plectritis.  Open, partly shaded slopes.  April-June.

Plectritis macrocera.  White plectritis.  Open, partly shaded slopes.  April-May.

 

VITACEAE.  Grape Family.

Vitis californica.  California wild grape.  Stream banks, often climbing on shrubs and trees.  May-June.

 

MONOCOTYLEDONS

 

CYPERACEAE.  Sedge Family.

Carex nudata.  Torrent sedge.  Common, streambanks.

Cyperus eragrostis.  Umbrella sedge.  Streambanks.  May-November.

 

IRIDACEAE.  Iris Family.

Iris fernaldii.  Fernald’s iris.  Shaded sites.  Apparent hybrid with Iris macrosiphon, may be only a local form of latter.  April-May.

Iris macrosiphon.  Long-tubed iris.  Open to partly shaded slopes..  April-May.

Sisyrinchium bellum.  Blue-eyed grass.  Open grassland, woodland.  March-May.

 

JUNCACEAE.  Rush Family.

Juncus balticus.  Baltic rush.  Moist to dry sites sites.  May-August.

Juncus bufonius.  Toad rush.  Moist, open, often disturbed sites.  April-September.

Juncus mexicanus.  Mexican rush.  Moist areas.  May-August.

Juncus patens.  Spreading rush.  Moist meadows and stream banks.  June-July.

Juncus xiphiodes.  Sword-leaved rush.  Common in moist areas.  May-October.

 

LILIACEAE.  Lily Family.

Allium serra.  Wild onion.  Grassy slopes.  March-May.

Brodiaea elegans ssp. elegans. Elegant brodiaea.  Grassland, open woodland.  May-June.

Calochortus amabilis.  Golden fairy lantern.  Shady or open woodland, shrubland.  April-June.

Calochortus luteus.  Gold nuggets.  Grassland, woodland.  May-June Weiss, s.n. (DAV).

Calochortus splendens Benth.  Splendid mariposa.  Dry grassland, chaparral.  May-June. Weiss s.n. (DAV).

Chloragalum pomeridianum.  Soap plant.  Grassland, chaparral.  May-August.

Dichelostemma capitatum.  Blue dicks.  Open woodland, scrub, grassland.  March-May.

Dichelostemma volubile.  Twining lily.  Foothill woodland, scrub.  Common.  April-June.

Fritillaria affinis.  Checker-lily.  Grassland, oak scrub.  February-May.

Triteleia laxa.  Ithuriel's spear.  Grassland, woodland.  March-June.

Triteleia lugens.  Edges of chaparral, uncommon.  April-May.

Zigadenus fremontii.  Fremont's star-lily.  Grassy or wooded slopes.  March-May.

 

ORCHIDACEAE.  Orchid Family.

Piperia elegans.  Rein-orchid.  Dry, open sites, scrubland.  May-September.

 

POACEAE.  Grass Family.

Agrostis exarata.  Pacific bent grass.  Moist open or disturbed sites.  June-August.

Aira caryophyllea.  Hairgrass.  Native to Europe.  Open or disturbed sites.  April-June.

Avena barbata.  Slender wild oat.  Native to Europe.  Disturbed sites.  March-June.

Avena fatua.  Broad-leaved wild oat.  Native to Europe.  Disturbed sites.  April-June.

Brachypodium distachyon.  Purple falsebrome.  Native to Eurasia.  Disturbed sites.  April-May.

Briza minor.  Little quaking grass.  Native to Europe.  Shaded or moist, open sites.  April-June.

Bromus carinatus.  California brome.  Open shrubland, woodland.  April-August.

Bromus diandrus.  Ripgut grass.  Open, disturbed sites.  April-June.

Bromus hordeaceus.  Soft chess.  Native to Europe.  Open, often disturbed sites.  April-July.

Bromus laevipes.  Perennial smooth-stemmed brome.  Shrubland, pine woodland.  May-August.

Bromus madritensis. Foxtail chess.  Native to Europe.  Open, often disturbed sites.  April-June.

Bromus madritensus ssp. rubens.  Red brome.  Native to southern Europe. Open, often disturbed sites.  March-June.

Bromus sterilis.  Poverty brome.  Native to Europe.  Open, often disturbed sites.  April-June.

Cynodon dactylon.  Bermuda grass.  Disturbed sites .  March-May.

Cynosurus echinatus.  Hedgehog dogtail.  From Europe.  Open, often disturbed sites.  April-June.

Elymus glaucus.  Woodland wild rye.  Grassland, chaparral, woodland.  June-August.

Elymus trachycaulis (Link) Shinners.  Slender wheat grass.  Grassland, woodland.  Dean 544 (DAV)

Gastridium ventricosum.  Nit grass.  Native to Europe.  Open, often disturbed sites.  May-September.  Dean  524 (DAV)

Hordeum marinum ssp. gussoneanum.  Mediterranian barley.  Native to Europe.  Dry to moist disturbed sites.  April-June.

Hordeum murinum ssp. leporinum.  Farmer's foxtail.  Native to Europe.  Moist, gen. disturbed sites. April-June.

Lolium multiflorum.  Italian ryegrass.  Disturbed sites, abandoned fields.  March-May.

Lolium tementulum.  Darnel.  Open, often disturbed sites.  April-June.

Melica californica.  California melic grass.  Open hillsides, oak woodland.  April-May.

Melica torreyana.  Small-flowered melic grass.  Shady oak woodland and chaparral.  March-June.

Nassella lepida.  Foothill needlegrass.  Dry slopes, chaparral, oak grassland.  March-May.

Nassella pulchra.  Purple needlegrass.  Grassland, chaparral, oak woodland.  March-May.

Poa annua.  Annual bluegrass.  Native to Europe.  Disturbed, moist ground.  January-July.

Poa bulbosa.  Bulbous bluegrass.  Native to Europe.  Disturbed sites.  April-July.

Poa secunda ssp. secunda.  One-sided bluegrass.  Many habitats.  February-June.

Polypogon maritimus.  Mediterranean beard grass.  Native to Europe.  Moist places.  June.

Polypogon monspeliensis.  Beard grass.  Native to Europe.  Moist places.  April-August.

Vulpia bromoides.  Brome fescue.  Native to Europe.  Disturbed sites, chaparral.  April-June.

Vulpia microstachys (Nutt.) Benth. var. ciliata (Beal) Lonard & Gould.  Gray fescue.  Open, gen. disturbed sites.  Dean 509 (DAV).

Vulpia microstachys var. confusa.  Small fescue.  Occasional on dry slopes.  March-June.

Vulpia microstachys var.  microstachys.  Stiff annual fescue.  Dry hillsides, open woodlands.  April-June.

Vulpia microstachys var. pauciflora. Dry hillsides, open woodlands.  April-June.

Vulpia myuros var. hirsuta.  Foxtail fescue.  Native to Europe.  Common in dry, open areas.  March-June.

Vulpia myuros var. myuros.  Rattail fescue.  Native to Europe.  Dry hillsides, open woodlands.  March-May

 

TYPHACEAE.  Cattail Family.

Typha angustifolia.  Narrow-leaved cattail.  Marsh and moist areas.  June.