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Walker Ridge and Bear Valley Area, Lake and Colusa Counties Humboldt State University Digital Commons @ Humboldt State University Botanical Studies Open Educational Resources and Data 2018 Checklist of the Vascular Plants of the Walker Ridge and Bear Valley Area, Lake and Colusa Counties James P. Smith Jr. Humboldt State University, [email protected] Follow this and additional works at: https://digitalcommons.humboldt.edu/botany_jps Part of the Botany Commons Recommended Citation Smith, James P. Jr., "Checklist of the Vascular Plants of the Walker Ridge and Bear Valley Area, Lake and Colusa Counties" (2018). Botanical Studies. 76. https://digitalcommons.humboldt.edu/botany_jps/76 This Flora of Northwest California-Checklists of Local Sites is brought to you for free and open access by the Open Educational Resources and Data at Digital Commons @ Humboldt State University. It has been accepted for inclusion in Botanical Studies by an authorized administrator of Digital Commons @ Humboldt State University. For more information, please contact [email protected]. A CHECKLIST OF THE VASCULAR PLANTS OF THE WALKER RIDGE - BEAR VALLEY AREA (LAKE AND COLUSA COUNTIES, CALIFORNIA) Compiled by James P. Smith, Jr. & John O. Sawyer, Jr. Department of Biological Sciences Humboldt State University Tenth Edition: 01 July 2018 Chlorogalum pomeridianum var. pomeridianum • soaproot F E R N S Dichelostemma multiflorum • wild-hyacinth Dichelostemma volubile • snake-lily, twining brodiaea Dipterostemon capitatum ssp. capitatum • blue dicks Aspidotis densa • Indian's dream Hastingsia alba • white-flowered schoenolirion Equisetum arvense • field horsetail Triteleia hyacinthina • white brodiaea Equisetum laevigatum • smooth scouring-rush Triteleia laxa • Ithuriel's spear Pellaea andromedifolia var. pubescens • coffee fern Triteleia peduncularis • long-rayed triteleia Pellaea mucronata var. mucronata • bird's-foot fern Pentagramma triangularis ssp. triangularis • goldback fern Berberidaceae Woodwardia fimbriata • western chain fern Mahonia dictyota • California barberry Boraginaceae G Y M N O S P E R M S Amsinckia intermedia • fiddleneck Cryptantha intermedia • Clearwater cryptantha Cupressus macnabiana • Macnab cypress Cynoglossum grande • hound's tongue Cupressus sargentii • Sargent cypress Heliotropium curassavicum var. oculatum • alkali heliotrope Juniperus californica • California juniper Plagiobothrys stipitatus var. micanthus Pinus attenuata • knobcone pine • vernal pool popcorn flower Pinus sabiniana • foothill pine, ghost pine, gray pine Plagiobothrys stipitatus var. stipitatus Torreya californica • California nutmeg • stipitate popcorn flower Calycanthaceae F L O W E R I N G P L A N T S Calycanthus occidentalis • California spice bush Amaranthaceae Campanulaceae Chenopodium californicum • California goosefoot Downingia insignis • cupped downingia Downingia pulchella ssp. campestris • large-flowered bluecups Amaryllidaceae Githopsis specularioides ssp. specularioides Allium amplectans • narrow-leaved onion • common blue cups Allium bolanderi • Bolander’s onion Nemacladus capillaris • common nemacladus Allium cratericola • dwarf onion Nemacladus montanus • serpentine nemacladus Allium falcifolium • serpentine onion Allium fimbriatum var. fimbriatum • fringed onion Caprifoliaceae Allium fimbriatum var. purdyi • Purdy's fringed onion Lonicera interrupta • chaparral honeysuckle Allium peninsulare • Mexicale onion Allium serra • serrated onion Caryophyllaceae Minuartia californica • California sandwort Anacardiaceae Minuartia douglasii • Douglas' sandwort Rhus aromatica var. trilobata • skunk bush sumac Petrorhagia dubia • grass pink Toxicodendron diversilobum • poison-oak Silene californica • California Indian pink Silene campanulata ssp. glandulosa • catchfly, sticky campion Apocynaceae Silene gallica • windmill pink Asclepias cordifolia • purple milkweed Silene multinerva • many-veined catchfly Asclepias fascicularis • whorled milkweed Velezia rigida • velezia Asclepias solanoana • prostrate milkweed Asclepias speciosa • showy milkweed Cistaceae Crocanthremum scoparium var. vulgare • peak rush-rose Asparagaceae Brodiaea elegans ssp. elegans • harvest brodiaea Compositae (Asteraceae) Brodiaea rosea • Indian Valley brodiaea Achillea millefolium • yarrow -1- Achyrachaena mollis • blow-wives • western morning glory Agoseris grandiflora • large-flowered agoseris Convolvulus arvensis • field bindweed Agoseris heterophylla • annual agoseris Cuscuta sp. • dodder Ancistrocarphus filagineus • woolly fishhooks Anthemis cotula • mayweed Cornaceae Arnica discoidea • rayless arnica Cornus glabrata • smooth dogwood Artemisia douglasiana • Douglas' mugwort Baccharis pilularis var. consanguinea • coyote brush Crassulaceae Baccharis salicifolia • mule fat Crassula connata • pygmy stonecrop Balsamorhiza macrolepis ssp. macrolepis Dudleya cymosa ssp. cymosa • common dudleya • California balsamroot Sedum spathulifolium • yellow sedum Calycadenia fremontii • Fremont's calycadenia Calycadenia pauciflora • small-flowered rosin weed Cruciferae (Brassicaceae) Centaurea melitensis • tocalote, Napa thistle Arabis breweri • Brewer's rock cress Centaurea solstiatilis • yellow star thistle Athysanus pusillus • common sand weed Chaenactis glabriuscula var. heterocarpha • yellow pin-cushion Brassica rapa • black mustard Cichorium intybus • chicory Capsella bursa-pastoris • shepherd's purse Cirsium cymosum • peregrine thistle Caulanthus lasiophyllus • California mustard Cirsium douglasii var. breweri • swamp thistle Descurainia sophia • flix weed, tansy mustard Cirsium occidentale var. occidentale • cobweb thistle Erysimum capitatum ssp. capitatum • western wallflower Ericameria linearifolia • narrowleaf goldenbush Hirschfeldia incana • hedge mustard Erigeron foliosus var. confinis • leafy daisy Lepidium latifolium • perennial peppergrass Eriophyllum lanatum var. achillaeoides • woolly-sunflower Lepidium nitidum • common peppergrass Filago californica • California filago Sisymbrium altissimum • tumble mustard Filago gallica • narrow-leaved filago Streptanthus breweri • Brewer's jewel flower Gnaphalium palustre • lowland cudweed Streptanthus glandulosus • sticky jewel flower Grindelia camporum var. camporum • Great Valley gumplant Streptanthus hesperidis • serpentine jewel flower Harmonia hallii • Hall's tarweed Streptanthus morrisonii • Three Peaks jewel flower Helenium bigelovii • Bigelow's sneezeweed Thelypodium brachycarpum • short-podded thelypodium Helianthella californica var. californica • California helianthella Thysanocarpus curvipes • sand fringe pod Helianthus bolanderi • serpentine sunflower Thysanocarpus laciniatus var. laciniatus • southern lacepod Hemizonella minima • opposite-leaved tarweed Hemizonia pungens • common spineweed Cucurbitaceae Hesperevax sparsiflora • slender evax Marah fabaceus var. agrestis • wild cucumber, manroot Hypochoeris glabra • smooth cat’s-ear Marah watsonii • Watson's manroot, taw manroot Hypochoeris radicata • hairy cat's-ear Lactuca serriola var. integrata • prickly lettuce Cyperaceae Lagophylla minor • lesser hareleaf Carex luzulina • woodrush sedge Lagophylla ramosissima • common hareleaf Carex nudata • torrent sedge Lasthenia californica • goldfields Carex obnupta • slough sedge Lasthenia glabrata • yellow-rayed goldfields Carex praegracilis • clustered field sedge Layia gallardioides • woodland layia Carex serratodens • two-toothed sedge Layia platyglossa • tidy tips Lessingia nemaclada • slender-stemmed lessingia Datiscaceae Madia gracilis • common tarweed Datisca glomerata • Durango root Malacothrix floccifera • woolly malacothrix Matricaria discoidea • pineapple weed Dipsacaceae Micropus californicus var. californicus • slender cottonweed Dipsacus fullonum • Fuller's teasel Microseris douglasii • Douglas' microseris Microseris laciniata ssp. laciniata • cut-leaved scorzonella Ericaceae Packera clevelandii • Cleveland’s ragwort, serpentine groundsel Arctostaphylos canescens ssp. canescens • hoary manzanita Packera eurycephalus var. eurycephalus Arctostaphylos canescens ssp. sonomensis • cut-leaved butterweed • Sonoma manzanita Packera greenei • flame butterweed Arctostaphylos glandulosa • hoary manzanita Pentachaeta exilis • meager pygmy daisy Arctostaphylos manzanita ssp. manzanita • common manzanita Psilocarphus brevissimus ssp. brevissimus Arctostaphylos viscida ssp. pulchella • white-leaved manzanita • round woolly-heads Arctostaphylos viscida ssp. vsicida • sticky manzanita Psilocarphus tenellus • slender woolly-head Rhododendron occidentale • western azalea Rigiopappus leptocladus • false wire weed Senecio vulgaris • common groundsel Euphorbiaceae Silybum marianum • milk thistle Croton setigerus • turkey mullein, dove weed Solidago velutina ssp. californica • California goldenrod Euphorbia crenulata • Chinese caps Stephanomeria virgata • twiggy wreath plant Euphorbia spathulata • reticulate-seeded spurge Uropappus lindleyi • silver puffs Wyethia angustifolia • foothill mule's-ear Fagaceae Wyethia glabra • smooth mule's-ear Notholithocarpus densiflorus • tanoak Xanthium strumarium • rough cocklebur Quercus berberidifolia • scrub oak Quercus chrysolepis • canyon live oak Convolvulaceae Quercus douglasii • blue oak Calystegia collina ssp. oxyphylla • serpentine morning glory Quercus durata var. durata • leather oak Calystegia occidentalis ssp. occidentalis Quercus lobata • valley oak -2- Quercus x morehus • oracle oak Phacelia egena • Kaweah River scorpion weed Quercus palmeri • Palmer's oak Phacelia heterophylla ssp. virgata • virgate phacelia Quercus wislizenii var.
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