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Botanical Studies Open Educational Resources and Data

4-2019

Checklist of the Vascular Plants of the Trinity Alps

James P. Smith Jr Humboldt State University, [email protected]

John O. Sawyer Jr. Humboldt State University

Follow this and additional works at: https://digitalcommons.humboldt.edu/botany_jps

Part of the Botany Commons

Recommended Citation Smith, James P. Jr and Sawyer, John O. Jr., "Checklist of the Vascular Plants of the Trinity Alps" (2019). Botanical Studies. 86. https://digitalcommons.humboldt.edu/botany_jps/86

This Flora of Northwest California-Regional 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 TRINITY ALPS (NORTHWESTERN CALIFORNIA)

Compiled by James P. Smith, Jr. Professor Emeritus of Botany Department of Biological Sciences Humboldt State University

Third Edition • 17 April 2019

INTRODUCTION LYCOPHYTES (FERN ALLIES)

The Trinity Alps are a mountain range located about 50 miles ISOËTACEAE • Quillwort Family northwest of Redding in Trinity and Siskiyou counties, California. Isoëtes bolanderi • Bolander’s quillwort They are a component of the Klamath Mountains, and as such lie Isoëtes howellii • Howell’s quillwort between the Coast Range to the west and the Cascade Range to the Isoëtes tenella • Spiny-spored quillwort east. Their flora is predominantly Sierran, a unique feature considering that the Trinity Alps are only about sixty miles from the SELAGINELLACEAE • Spike-moss Family Pacific coast. Elevations range from 1350 ft. along the Trinity River Selaginella scopulorum • Dense spike-moss to 9002 ft. at Thompson Peak. The Alps are drained by the Salmon Selaginella wallacei • Wallace’s spike-moss and Trinity Rivers. The area is shown on the Cecilville, Coffee Creek, Selaginella watsonii • Watson’s spike-moss and Trinity USGS maps. The Canyon Creek and Coffee Creek trails are the most popular access to the Alps. F E R N S The Trinity Alps Wilderness is a 517,000 acre region in the Klamath, Shasta-Trinity, and Six Rivers National Forests. It is the second ATHYRIACEAE • Lady Fern Family largest wilderness area in California. The region is known for its Athyrium americanum • Alpine lady fern spectacular views and rich flora, especially its diversity of conifer Athyrium filix-femina var. cyclosporum • Lady fern species. CYSTOPTERIDACEAE • Brittle Fern Family Cystopteris fragilis • Fragile fern, brittle fern

-1- Picea breweriana • Weeping spruce DENNSTAEDTIACEAE • Bracken Fern Family Pinus albicaulis • Whitebark pine Pteridium aquilinum var. pubescens • Bracken fern Pinus attenuata • Knobcone pine Pinus balfouriana • Foxtail pine DRYOPTERIDACEAE • Wood Fern Family Pinus contorta ssp. murryana • Lodgepole pine Polystichum imbricans var. imbricans • Narrow-leaved sword fern Pinus jeffreyi • Jeffrey pine Polystichum lemmonii • Lemmon’s holly fern Pinus lambertiana • Sugar pine Polystichum lonchitis • Northern holly fern Pinus monticola • Western yellow pine Pinus ponderosa • Yellow pine, ponderosa pine EQUISETACEAE • Horsetail or Scouring-Rush Family Pinus sabiniana • Ghost pine, gray pine Equisetum arvense • Field horsetail Pseudotsuga menziesii • Douglas-fir Equisetum laevigatum • Smooth scouring-rush Tsuga mertensiana • Mountain hemlock

MARSILEACEAE • Water-clover Family TAXACEAE • Yew Family Marsilea vestita ssp. vestita • Hairy water-clover Taxus brevifolia • Pacific yew

OPHIOGLOSSACEAE • Adder’s-tongue Family Sceptridium multifidum • Leather grape fern F L O W E R I N G P L A N T S

PTERIDACEAE • Brake Fern Family ACERACEAE • Maple Family Adiantum aleuticum • Five-finger fern, western maiden-hair Acer glabrum var. glabrum • Rocky Mountain maple Aspidotis densa • Indian’s dream Acer glabrum var. torreyi • Mountain, Torrey, or dwarf maple Cheilanthes gracillima • Lace fern Acer macrophyllum • Big-leaved maple Cryptogramma acrostichoides • American parsley fern Cryptogramma cascadensis • Cascade rock-brake AMARANTHACEAE • Amaranth Family Pellaea brachyptera • Cliff-brake Chenopodium atrovirens • Piñon goosefoot

WOODSIACEAE • Cliff Fern Family AMARYLLIDACEAE • Amaryllis or Onion Family Woodsia scopulina • Rocky Mountain woodsia Allium amplectans • Paper onion Allium campanulatum • Sierra onion Allium falcifolium • Scythe-leaved onion C O N I F E R S Allium parvum • Dwarf onion Allium siskiyouense • Siskiyou onion CUPRESSACEAE • Cypress Family Allium validum • Swamp onion Calocedrus decurrens • Incense-cedar Juniperus communis var. saxatilis • Dwarf juniper ANACARDIACEAE • Cashew Family Toxicodendron diversilobum • Poison-oak PINACEAE • Pine Family Abies concolor • White fir APOCYNACEAE • Dogbane Family Abies magnifica • Red fir Apocynum androsaemifolium • Mountain or spreading dogbane Abies x shastensis • Shasta fir Asclepias cordifolia • Purple milkweed

-2- Asclepias fascicularis • Narrow-leaved milkweed BORAGINACEAE • Borage Family Asclepias speciosa • Showy milkweed, common milkweed Amsinckia menziesii var. intermedia • Small-flowered fiddleneck Amsinckia menziesii var. menziesii • Small-flowered fiddleneck ARALIACEAE • Spikenard Family Cryptantha affinis • Common cryptantha Aralia californica • Elk’s-clover Cryptantha simulans • Pinewoods cryptantha Cryptantha torreyana • Torrey’s cryptantha ARISTOLOCHIACEAE • Birthwort Family Cynoglossum grande • Hound’s tongue Aristolochia californica • California dutchman’s-pipe Cynoglossum occidentale • Western hound’s tongue Asarum caudatum • Long-tailed wild ginger Hackelia bella • Showy stickseed Asarum hartwegii • Wild ginger Hackelia micrantha • Jessica’s stickseed Hackelia setosa • Bristly stickseed ASPARAGACEAE • Asparagus or Hyacinth Family Hackelia velutina • Velvety stickseed Brodiaea coronaria • Harvest brodiaea, harvest cluster-lily Lithospermum californicum • Puccoon, California gromwell Brodiaea coronaria • Harvest brodiaea Plagiobothrys cognatus • Cognate allocarya Brodiaea elegans • Elegant cluster-lily Plagiobothrys hispidulus • Harsh allocarya Camassia leichtlinii var. suksdorfii • Large camas Camassia quamash ssp. breviflora • Small camassia CAMPANULACEAE • Harebell Family Dichelostemma capitatum • Blue dicks Asyneuma prenanthoides • California harebell Dichelostemma congestum • Ookow Campanula rapunculoides • Creeping bell flower Dichelostemma ida-maia • Fire-cracker plant Campanula rotundifolia • Bluebell-of-Scotland Dichelostemma multiflorum • Many-flowered snake-lily Campanula wilkinsiana • Wilkin’s harebell Hastingsia alba • White-flowered schoenolirion Githopsis specularioides • Commpn bluecups Maianthemum racemosum var. amplexicaulis • False Solomon’s-seal Downingia yina • Cascade downingia Maianthemum stellatum • False Solomon’s-seal Heterocodon rariflorum • Western pearl flower Triteleia crocea • Yellow triplet-lily Triteleia hyacinthina • Wild hyacinth, fool’s onion CAPRIFOLIACEAE • Honeysuckle Family Triteleia ixioides ssp. anilina • Pretty face Linnaea borealis ssp. longiflora • Twin flower Lonicera ciliosa • Orange honeysuckle BERBERIDACEAE • Barberry Family Lonicera conjugialis • Double honeysuckle Achlys californica • Vanilla leaf Lonicera hispidula • Hairy or California honeysuckle Mahonia nervosa • Oregon-grape Lonicera interrupta • Chaparral honeysuckle Mahonia piperiana • Piper’s mahonia Symphoricarpos albus var. laevigatus • Common snowberry Mahonia repens • Creeping Oregon-grape Symphoricarpos mollis • Creeping snowberry Vancouveria planipetala • Inside-out-flower Symphoricarpos rivularis • Common snowberry

BETULACEAE • Birch Family CARYOPHYLLACEAE • Carnation Family Alnus incana ssp. tenuifolia • Mountain alder Arenaria congesta • Capitate sandwort Alnus viridis ssp. sinuata • Wavy-leaved alder Arenaria nuttallii ssp. gregaria • Nuttall’s sandwort Alnus tenuifolia • Thin-leaved alder Arenaria serpyllifolia • Thyme-leaved sandwort Corylus cornuta var. californica • California hazelnut Cerastium arvense • Field chickweed Cerastium fontanum ssp. vulgare • Perennial mouse-ear chickweed

-3- Cerastium vulgatum • Larger mouse-ear chickweed Antennaria sawyeri • Sawyer’s pussy-toes Eremogone congesta var. congesta • Capitate sandwort Antennaria umbrinella • Brown pussy-toes Minuartia douglasii • Douglas’ campion Anthemia cotula • May weed, dog-fennel Minuartia nuttallii ssp. gregaria • Nuttall’s sandwort Arnica amplexicaulis • Stream bank arnica Petrorhagia dubia • Rock pink Arnica cordifolia • Heart-leaved arnica Pseudostellaria jamesiana • Sticky starwort Arnica dealbata • Little leopard bane Sagina decumbens ssp. occidentalis • Decumbent pearlwort Arnica discoidea var. eradiata • Rayless arnica Silene californica • Indian pink Arnica diversifolia • Lawless arnica Silene campanulata ssp. glandulosa • Red Mountain catchfly Arnica lanceolata ssp. prima • Stream bank arnica Silene campanulata ssp. greenei • Red Mountain catchfly Arnica latifolia • Mountain arnica Silene douglasii var. douglasii • Douglas’ campion Arnica mollis • Cordilleran arnica Silene grayi • Gray’s campion Arnica nevadensis • Sierra or Nevada arnica Silene hookeri ssp. bolanderi • Indian cartwheel Arnica viscosa • Shasta arnica Silene lemmonii • Lemmon’s campion, pine pink Artemisia douglasiana • Douglas’ mugwort Silene menziesii var. menziesii • White catchfly Artemisia norvegica var. saxatilis • Mountain sagewort Silene menziesii var. viscosa • White catchfly Artemisia tridentata • Common sage brush Spergularia rubra • Purple sand spurry Balsamorhiza deltoidea • Balsam-root Stellaria crispa • Chamisso’s starwort Balsamorhiza sericea • Silky balsam-root Stellaria longipes • Long-stalked starwort Brickellia grandiflora • Large-flowered brickellia Brickellia greenei • Greene’s brickellia CELASTRACEAE • Bittersweet or Staff-tree Family Cacaliopsis nardosmia • Silver crown Parnassia cirrata var. intermedia • Cascade grass-of-Parnassus Calycadenia truncata ssp. microcephala • Small-flowered rosin weed Parnassia fimbriata • Fringed grass-of-Parnassus Centaurea cyanus • Corn flower, bachelor’s buttons Parnassia palustris var. californica • California grass-of-Parnassus Centaurea solstitialis • Yellow star thistle Paxistima myrsinites • Oregon boxwood Chaenactis douglasii var. douglasii • Dusty maiden Chaenactis glabriuscula var. heterocarpha • Yellow pincushion COMPOSITAE (ASTERACEAE) • Sunflower Family Cichorium intybus • Chicory Achillea millefolium • Yarrow Cirsium andersonii • Anderson’s thistle Achyrachaena mollis • Blow-wives Cirsium breweri • Brewer’s thistle Adenocaulon bicolor • Trail plant Cirsium callilepis • Fringe-bracted thistle Ageratina occidentalis • Western thoroughwort Cirsium cymosum var. cymosum • Peregrine or Green’s thistle Agoseris aurantiaca • Orange-flowered agoseris Cirsium douglasii var. breweri • Douglas’ thistle Agoseris glauca var. monticola • Mountain-dandelion Cirsium douglasii var. douglasii • Douglas’ or swamp thistle Agoseris heterophylla • Annual or California agoseris Cirsium remotifolium var. odontolepis • Pacific fringe-scaled thistle Agoseris retrorsa • Spear-leaved agoseris Cirsium vulgare • Bull thistle Anaphalis margaritacea • Pearly everlasting Crepis acuminata var. acuminata • Long-leaved hawk’s-beard Anisocarpus madioides • Woodland alpine tarplant Crepis monticola • Siskiyou hawk’s-beard Antennaria alpina var. media • Alpine everlasting Crepis occidentalis • Large-flowered hawk’s-beard Antennaria argentea • Silvery everlasting Crepis pleurocarpa • Naked-stemmed hawk’s-beard Antennaria media • Rocky Mountain pussy-toes Ericameria bloomeri • Bloomer’s macronema Antennaria rosea • Rosy everlasting Ericameria greenei • Greene’s golden bush

-4- Ericameria nauseosa ssp. nauseosa • Rubber rabbit brush Kyhosia bolander • Bolander’s tarweed Ericameria nauseosa ssp. speciosa • Common or rubber rabbit brush Lactuca serriola • Prickly lettuce Erigeron canadensis • Canadian horse weed Lasthenia californica • California goldfields Erigeron cervinus • Siskiyou daisy Lessingia nemaclada • Greene’s slender-stemmed lessingia Erigeron compositus var. glabratus Leucanthemum vulgare • Ox-eye daisy Erigeron divergens • Diffuse daisy, spreading daisy Luina hypoleuca • Little-leaved or silver-backed luina Erigeron eatonii ssp. plantagineus • Eaton’s daisy Madia citriodora • Lemon-scented tarweed Erigeron glacialis var. glacialis • Subalpine fleabane Madia elegans ssp. elegans • Common madia Erigeron inornatus var. inornatus • California rayless daisy Madia glomerata • Mountain tarplant Erigeron inornatus var. visidulus • Rayless daisy Madia gracilis • Slender tarweed Erigeron lassenensis var. lassenensis • Lassen fleabane Madia minima • Dwarf madia, small-headed tarplant Erigeron peregrinus ssp. angustifolius • Wandering daisy Malacothrix floccifera • Woolly malacothrix Erigeron peregrinus ssp. callianthemus • Mountain daisy Microseris nutans • Nodding scorzonella Erigeron petrophilus var. viscidulus • Rock daisy Nothocalais alpestris • Alpine lake prairie-dandelion Erigeron reductus var. angustatus • California rayless fleabane Oreostemma alpigenum var. andersonii • alpine aster Eriophyllum lanatum var. achilleoiedes • Common woolly-sunflower Packera greenei • Flame groundsel Eriophyllum lanatum var. grandiflorum • Common woolly-sunflower Petasites frigidus var. palmatus • Western colt’s-foot Eriophyllum lanatum var. integrifolium • Common woolly-sunflower Pseudognaphalium canescens ssp. thermale • Wright’s cudweed Eriophyllum lanatum var. lanceolatum • Common woolly-sunflower Pseudognaphalium macounii • Macoun’s rabbit-tobacco Eucephalus engelmannii • Engelmann’s aster Pseudognaphalium thermale • Northwestern rabbit-tobacco Eucephalus glabratus • Smooth wayside aster Raillardella pringlei • Showy raillardella Eucephalus ledophyllus var. covillei • Cascade aster Rudbeckia californica • California cone-flower Eucephalus ledophyllus var. ledophyllus • Cascade aster Senecio integerrimus var. major • Single-stemmed butterweed Gnaphalium palustre • Lowland cudweed Senecio triangularis • Arrowhead butterweed Grindelia camporum • Gum plant Serricocarpus oregonensis ssp. oregonensis Grindelia hirsutula • Hairy gum weed Solidago canadensis ssp. elongata • Meadow goldenrod Hazardia whitneyi ssp. discoideus • Whitney’s hazardia Solidago elongata • West Coast goldenrod Helenium bigelovii • Bigelow’s sneezeweed Solidago multiradiata • Alpine goldenrod Helianthella californica var. californica • California dwarf-sunflower Sonchus asper • Prickly sow-thiistle Helianthella californica var. nevadensis • California dwarf-sunflower Stephanomeria lactucina • Large-flowered stephanomeria Helianthella californica var. shastensis • Shasta dwarf-sunflower Symphyotrichum ascendens • Western American-aster Helianthus bolanderi • Bolander’s sunflower Symphyotrichum eatonii • Eaton’s or Oregon aster Hemizonella minima • Oppoiste-leaved or miniature tarweed Symphyotrichum hendersonii • Lyall’s aster Hemizonia congesta ssp. luzulifolia • Hayfield tarweed Symphyotrichum spathulatum var. intermedium • Mountain aster Heterotheca villosa • Hairy false golden-aster Taraxacum officinale • Common dandelion Hieracium albiflorum • White-flowered hawkweed Tonestus lyallii • Lyall’s tonestus Hieracium cynoglossoides • Hound-tongue hawkweed Tragopogon dubius • Yellow salsify Hieracium gracile • Alpine hawkweed Uropappus lindleyi • Lindley’s false silver puffs Hieracium horridum • Shaggy hawkweed Wyethia angustifolia • Narrow-leaved mule-ear’s Hieracium nudicaule • Woolly weed Hieracium triste • Slender hawkweed CONVOLVULACEAE • Morning-Glory or Bindweed Family

-5- Calystegia malacophylla ssp. m. • Sierra or woolly morning-glory Athysanus pusillus • Dwarf athysanus Convolvulus occidentalis • Western morning-glory Barbarea orthoceras • American winter cress Cuscuta californica • Chaparral dodder Capsella bursa-pastoris • Shepherd’s purse Cuscuta occidentalis • Western dodder Cardamine californica var. californica • California toothwort Cardamine californica var. cardiophylla • California toothwort CORNACEAE • Dogwood Family Cardamine pachstigma • Stout-beaked toothwort Cornus nuttallii • Mountain dogwood Descurainia incana ssp. viscosa • Mountain tansy-mustard Cornus sericea ssp. occidentalis • American dogwood, red osier Descurainia incisa ssp. incisa • Mountain tansy mustard Cornus sericea ssp. sericea • American dogwood Draba howellii • Howell’s draba, rosette whitlow-grass Cornus sessilis • Black-fruited dogwood Draba carnosula • Mt. Eddy whitlow-grass Cornus stolonifera • American dogwood Erysimum capitatum • Douglas’ wallflower, western wallflower Erysimum perenne • Sierra wallflower CRASSULACEAE • Stonecrop Family Isatis tinctoria • Woad, dyer’s woad Sedum obtusatum ssp. boreale • Sierra stonecrop Lepidium campestre • English pepper-grass Sedum obtusatum ssp. paradisum • Canyon Creek stonecrop Lesquerella occidentalis • Western lesquerella Sedum oregonense • Watson’s stonecrop, cream stonecrop Noccaea fendleri var. glauca • Alpine penny-cress Sedum purdyi • Purdy’s stonecrop Phoenicaulis cheiranthoides • Common phoenicaulis Sedum spathulifolium • Broad-leaved stonecrop Rorippa curvisiliqua • Western yellow-cress Sedum stenopetalum ssp. radiatum • Narrow-petaled stonecrop Sisymbrium officinale • Hedge mustard Streptanthus tortuosus • Shield plant CRUCIFERAE (BRASSICACEAE) • Mustard Family Thlaspi glaucum var. hesperium • Penny cress Arabidopsis thaliana • Thale cress Thysanocarpus curvipes var. elegans • Lace pod Arabis acutina • Pointed rock-cress Turritis glabra • Tower mustard Arabis breweri ssp. shastensis • Brewer’s rock-cress Arabis divaricarpa var. divaricarpa • Spreading-pod rock-cress CUCURBITACEAE • Gourd or Squash Family Arabis drummondii • Drummond’s rock-cress Marah oregana • Oregon manroot Arabis glabra • Tower mustard Arabia eschscholtziana • Eschscholtz’s rock-cress CYPERACEAE • Sedge Family Arabis holboellii var. retrofracta • Holboell’s rock-cress Calliscirpus criniger • Fringed bulrush Arabis lyallii • Lyall’s rock-cress Carex ablata • Cold-loving sedge Arabis platysperma var. platysperma • Pioneer rock-cress Carex abrupta • Beaked sedge Arabis platysperma var. howellii • Pioneer rock-cress Carex amplifolia • Big-leaved sedge Arabis pratincola • Meadow rock-cress Carex angustata • Many-fruited sedge Arabis puberula • Blue Mountain rock-cress Carex aquatilis • Water sedge Arabs pycnocarpa var. pycnocarpa • Cream-flowered rock-cress Carex athrostachya • Slender-beaked sedge Arabis repanda • Yosemite rock-cress Carex aurea • Golden sedge Arabis rectissima • Bristly-leaved rock-cress Carex bolanderi • Bolander’s sedge Arabis retrofracta • Reflexed rock-cress Carex brainerdii • Brainerd’s sedge Arabis sparsiflora • Elegant rock-cress Carex cusickii • Cusick’s sedge Arabis subpinnatifida • Klamath rock-cress Carex deflexa var. boottii • Mountain mat sedge Arabis suffrutescens • Woody rock-cress Carex echinata var. echinata • Star sedge

-6- Carex exsiccata • Western inflated sedge Eleocharis decumbens • Decumbent spike-rush Carex fissuricola • Canyon sedge Eleocharis macrostachya • Pale spike-rush Carex fracta • Fragile-sheathed sedge Eleocharis montevidensis • Sand spike-rush Carex hassei • Hasse’s sedge Rhynchospora alba • White beaked-rush Carex heteroneuca • Various-nerved sedge Schoenoplectus subterminalis • Waving bulrush, water bulrush Carex hoodii • Hood’s sedge Scirpus congdonii • Congdon’s bulrush Carex integra • Smooth-beaked sedge Scirpus microcarpus • Small-fruited bulrush Carex interior • Inland sedge Carex jonesii • Jones’ sedge ERICACEAE • Heath Family Carex kelloggii • Kellogg’s sedge Allotropa virgata • Sugar stick Carex lemmonii • Lemmon’s sedge Arbutus menziesii • Madrone, madroño Carex lenticularis var. lipocarpa • Lakeshore sedge Arctostaphylos manzanita • Common manzanita Carex leptopoda • Short-scaled sedge Arctostaphlos nevadensis • Pinemat manzanita Carex luzulina • Woodrush sedge Arctostaphylos patula • Green-leaved manzanita Carex mariposana • Mariposa sedge Arctostaphylos viscida • White-leaved manzanita Carex mendocinensis • Mendocino sedge Cassiope mertensiana ssp. ciliolata • Western mountain heather Carex microptera • Small-winged sedge Cassiope mertensiana ssp. mertensiana • Western mountain heather Carex multicaulis • Many-stemmed sedge Chimaphila menziesii • Little prince’s-pine Carex multicostata • Many-ribbed sedge Chimaphila umbellata var. occidentalis • Pipsissewa Carex neurophora • Alpine nerved sedge Gaultheria humifusa • Alpine wintergreen Carex nigricans • Blackish sedge Kalmia microphylla • Alpine-laurel Carex nudata • Torrent sedge Leucothoë davisiae • Western leucothoe, black-laurel Carex pachystachya • Thick-jeaded sedge Monotropa uniflora • Indian pipe Carex pellita • Woolly sedge Orthilia secunda • One-sided wintergreen Carex preslii • Presl’s sedge Phyllodoce empetriformis • Pink mountain heather Carex proposita • Potato chip sedge Pterospora andromedea • Pinedrops Carex rossii • Ross’ sedge Pyrola asarifolia var. asarifolia • Bog wintergreen Carex rostrata • Beaked sedge Pyrola crypta • Cryptic wintergreen Carex scabriuscula • Cascade sedge Pyrola dentata • Toothed wintergreen Carex scopulorum var. bracteosa • Mountain sedge Pyrola picta • White-veined wintergreen Carex scopulorum var. scopulorum • Holm’s Rocky Mountain sedge Pyrola secunda • One-sided wintergreen Carex serratodens • aw-toothed sedge Sarcodes sanguinea • Snow plant Carex spectabilis • Showy sedge Rhododendron columbianum • Western Labrador tea Carex subfusca • Rusty sedge Rhododendron occidentale • Western azalea Carex teneraeformis • Sierra slender sedge Vaccinium arbuscula • Dwarf huckleberry Carex utriculata • Southern beaked sedge Vaccinium scoparium • Little-leaved huckleberry Carex versicaria • Lesser bladder sedge Cyperus eragrostis • Umbrella sedge EUPHORBIACEAE • Spurge Family Cyperus squarrosus • Awned flat sedge Croton setigerus • Dove weed, turkey-mullein Dulichium arundinaceum • Three-way sedge Euphorbia crenulata • Chinese caps Eleocharis acicularis • Needle spike-rush Euphorbia serpyllifolia • Thyme-leaved spurge

-7- FAGACEAE • Oak or Beech Family Deschampsia atropurpurea • Mountain hair grass Castanopsis sempervirens • Bush chinquapin Deschampsia caespitosa • Tufted hair grass Notholithocarpus densiflorus var. densiflorus • Tan-oak Deschampsia danthonioides • Annual hair grass Notholithocarpus densiflorus var. echinoides • Shrub tan-oak Deschampsia elongata • Slender hair grass Quercus chrysolepis • Canyon live oak Digitaria sanguinalis • Hairy crab grass Quercus garryana var. breweri • Oregon white oak Elymus elymoides var. californicus • Bottle-brush squirrel-tail Quercus garryana var. garryana • Oregon white oak Elymus glaucus • Western rye grass Quercus kelloggii • California black oak Elymus hispidus • Intermediate wheat grass Quercus sadleriana • Deer oak, Sadler’s oak Elymus trachycaulus • Slender wheat grass Quercus vaccinifolia • Huckleberry oak Eragrostis mexicana ssp. virescens • Chilean love grass Festuca bromoides • Brome six-week’s fescue GARRYACEAE • Silk-tassel Family Festuca idahoensis • Blue bunch grass Garrya fremontii • Fremont’s silk-tassel Festuca occidentalis • Western fescue Festuca rubra • Red fescue GENTIANACEAE • Gentian Family Glyceria elata • Tall manna grass Frasera albicaulis ssp. nitida • Green gentian Glyceria striata • Ridged fowl manna grass Gentiana calycosa • Explorer’s, blue or pleated gentian Holcus lanatus • Velvet grass Gentiana newberryi var. newberryi • Alpine gentian Hordeum brachyantherum • Meadow barley Gentianella amarella ssp. acuta • Autumn dwarf-gentian Melica aristata • Awned melic gras Gentianopsis simplex • Hikers’ or one-flowered fringed gentian Melica bulbosa • Western melica Melica californica • California melic GRAMINEAE (POACEAE) • Grass Family Melica fugax • Small onion grass Agrostis alba • Redtop Melica harfordii • Harford’s melic Agropyron cristatum • Crested wheat grass Melica stricta • Nodding melica Agrostis scabra • Rough hair grass Melica subulata • Little onion grass Agrostis stolonifera • Creeping bent grass Muhlenbergia andina • Hairy muhly Agrostis variabilis • Ross’s bent grass Muhlenbergia filiformis • Slender muhly Aira caryophyllea • Silver hair grass Muhlenbergia minutissima • Least muhly Bromus carinatus • California or large-flowered brome Muhlenbergia montana • Mountain muhly Bromus inermis ssp. inermis • Smooth brome Muhlenbergia richardsonis • Mat muhly Bromus laevipes • Chinook or woodland brome Panicum acuminatum var. acuminatum • Pacific panic grass Bromus madritensis ssp. rubens • Foxtail or red brome Panicum capillare • Old witch grass Bromus marginatus • Large mountain brome Phalaris arundinacea • Reed canary grass Bromus orcuttianus • Orcutt’s brome grass Phleum alpinum • Mountain timothy Bromus vulgaris • Narrow-flowered or Columbia brome Phleum pratense • Timothy Calamagrostis breweri • Brewer’s reed grass Poa bolanderi • Bolander’s blue grass Calamagrostis canadensis • Blue-joint Poa bulbosa • Bulbous blue grass Calamagrostis koelerioides • Tufted pine grass Poa canbyi • Canby’s blue grass Calamagrostis purpurascens • Purple reed grass Poa compressa • Canada blue grass Danthonia californica • California oat grass Poa epilis • Mountain blue grass Danthonia unispicata • One-spiked oat grass Poa gracillima • Pacific blue grass

-8- Poa pratensis • Kentucky blue grass Howellianthus dalesianus • Scott Mtn.-phacelia Poa pringlei • Pringle’s blue grass Hydrophyllum fendleri var. albifrons • Fendler’s waterleaf Poa secunda ssp. secunda • Sandberg’s blue grass Hydrophyllum occidentale • California waterleaf Polypogon monspeliensis • Annual rabbit’s-foot grass Nemophila heterophylla • White baby-blue-eyes Setaria viridis var. viridis • Green bristle grass Nemophila menziesii var. intermedia • Blue-veined nemophila Stipa miliacea • Smilo, millet mountain-rice Nemophila menziesii var. menziesii • Baby blue-eyes Stipa nevadensis • Nevada needle grass Nemophila parviflora var. austinae • Small-flowered nemophila Stipa occidentalis var. californica • California needle grass Nemophila pedunculata • Meadow nemophila Stipa occidentalis var. occidentalis • Western needle grass Phacelia corymbosa • Serpentine phacelia Stipa occidentalis var. pubescens • Common western needle grass Phacelia dalesiana • Scott Mtn. scorpion weed Stipa stillmanii • Stillman’s needle grass Phacelia heterophylla ssp. virgata • Variable-leaved scorpion weed Trisetum spicatum • Downy oat-grass Phacelia leonis • Siskiyou scorpion weed Phacelia linearis • Thread-leaved scorpion weed GROSSULARIACEAE • Currant Family Phacelia mutabilis • Changeable phacelia, caterpillar plant Ribes binominatum • Trailing gooseberry Phacelia pringlei • Pringle’s scorpion weed Ribes cereum • White squaw currant Phacelia procera • Tall scorpion weed Ribes cruentum • Shiny currant Phacelia ramosissima • Branched scorpion weed Ribes lacustre • Swamp currant Romanzoffiana sitchensis • Sitka mist maiden Ribes lobbii • Gummy gooseberry Ribes montigenum • Western prickly gooseberry IRIDACEAE • Iris Family Ribes nevadense • Sierra Nevada currant, mountain pink current Iris purdyi • Ground iris Ribes roezlii var. roezlii • Sierra gooseberry Iris tenuissima • Long-tubed iris Ribes sanguineum var. glutinosum • Pink-flowering currant Sisyrinchium bellum • California blue-eyed-grass Ribes sanguineum var. sanguineum • Red-flowering currant Sisyrinchium californicum • Golden-eyed-grass Ribes viscosissimum • Sticky currant Sisyrinchium idahoense var. idahoense • Idaho blue-eyed grass

GUTTIFERAE • St. John’s Wort Family JUNCACEAE • Rush Family Hypericum anagalloides • Tinker’s penny Juncus acuminatus • Sharp-fruited rush Hypericum perforatum • Klamath weed Juncus arcticus var. balticus • Mountain rush Hypericum scouleri var. scouleri • Scouler’s St. John’s wort Juncus balticus ssp. ater • Baltic rush Juncus bolanderi • Bolander’s rush HIPPOCASTANACEAE • Buckeye Family Juncus bufonius var. occidentalis • Toad rush Aesculus californica • California buckeye or horse chestnut Juncus confusus • Colorado rush Juncus drummondii • Drummond’s rush HYDRANGEACEAE • Hydrangea Family Juncus effusus • Soft rush, bog rush Philadelphus californicus • California mock-orange Juncus ensifolius • Three-stemmed rush Whipplea modesta • Yerba de selva, modesty Juncus hemiendytus • Hermann’s dwarf rush Juncus howellii • Howell’s rush HYDROPHYLLACEAE • Waterleaf Family Juncus kelloggii • Common toad rush Draperia systyla • Viola draperia Juncus laccatus • Slender soft rush Hesperochiron pumilus • Dwarf monkey-flower Juncus mertensianus ssp. mertensianus • Merten’s rush

-9- Juncus nevadensis • Sierra rush Lotus humistratus • Hill lotus Juncus orthophyllus • Striaght-leaved rush Lotus nevadensis • Sierra Nevada lotus Juncus parryi • Parry’s rush Lotus oblongifolius • Narrow-leaved lotus, stream bank lotus Juncus regelii • Redel’s rush Lotus pinnatus • Pinnate-leaved trefoil Juncus saximontanus • Rocky Mountain rush Lotus purshianus • Spanish clover Juncus tenuis • Poverty rush Lotus uliginosus • Bird’s-foot trefoil Luzula comosa var. laxa • Common wood rush Lotus unifoliatus var. unifoliatus • American bird’s-foot trefoil Luzula divaricata • Forked wood rush Lupinus adsurgens • Silky lupine Luzula glabrata • Smooth wood rush Lupinus albicaulis • Sickle-keeled lupine Luzula macrantha • Long-anthered wood rush Lupinus bicolor • Miniature lupine Luzula parviflora • Small-flowered wood rush Lupinus croceus var. croceus • Mount Eddy lupine, yellow lupine Luzula piperi • Piper’s wood rush Lupinus lapidicola • Mount Eddy lupine Lupinus latifolius ssp. viridifolius • Broad-leaved lupine LABIATAE (LAMIACEAE) • Mint Family Lupinus lepidus var. lobbii • Lobb’s lupine Agastache urticifolia • Nettle-leaved horse mint Lupinus leucophyllyus • Western or poison lupine Lamium amplexicaule • Henbit, giraffe head Lupinus lyallii • Lyall’s lupine Monardella odoratissima ssp. glauca • Pale mountain balm Melilotus officinalis • Yellow sweet-clover Monardella odoratissima ssp. pallida • Mountain mountain balm Robinia pseudoacacia • Black locust Monardella sheltonii • Coyote mountain balm Thermopsis gracilis • Golden false lupine, narrow golden-banner Prunella vulgaris ssp. lanceolata • Self-heal Trifolium breweri • Forest clover Salvia sonomensis • Creeping sage Trifolium cyathiferum • Bowl clover Satureja douglasii • Yerba buena Trifolium eriocephalum • Woolly-headed clover Scutellaria antirrhinoides • Snapdragon skullcap Trifolium longipes ssp. elmeri • Long-stalked clover Scutellaria californica • California skullcap Trifolium longipes ssp. hansenii • Hansen’s clover Scutellaria nana • Dwarf skullcap Trifolium longipes ssp. longipes • Long-stalked clover Scutellaria siphocampyloides • Gray-leaved skullcap Trifolium oreganum • Oregon clover Stachys albens • White-stemmed hedge-nettle Trifolium pratense • Red clover Stachys rigida ssp. rigida • Rough hedge-nettle Trifolium productum • Shasta clover Trichostema lanceolatum • Blue curls, vinegar weed Trifolium repens • White clover Trichostema oblongum • Mountain blue-curls Trifolium willdenovii • Tomcat clover Trifolium wormskioldii • Cow clover LEGUMINOSAE (FABACEAE) • Legume or Bean Family Vicia americana ssp. americana • American purple vetch Astragalus whitneyi var. siskiyouensis • Whitney’s locoweed Cercis occidentalis • Redbud LILIACEAE • Lily Family Lathyrus jepsonii var. californicus • Jepson’s pea Calochortus coeruleus • Beaver’s-tail-grass Lathryrus latifolius • Everlasting pea Calochortus elegans var. nanus • Elegant cat’s-ear Lathyrus nevadensis • Nevada pea, Sierra pea Calochortus nudus • Naked star-tulip Lathyrus polyphyllus • Many-leaved pea, leafy vetchling Calochortus tolmiei • Cat’s-ears, pussy ears Lathyrus sulphureus • Snub pea Calochortus uniflorus • Large-flowered star-tulip Lathyrus torreyi • Torrey’s pea Clintonia uniflora • Single-flowered clintonia Lotus crassifolius • Broad-leaved lotus Erythronium californicum • Fawn-lily

-10- Erythronium grandiflorum var. grandiflorum • Yellow fawn-lily Calyptridium umbellatum • Pussy paws Fritillaria affinis var. affinis • Rice-grains mission bells Claytonia lanceolata • Western spring beauty Fritillaria atropurpurea • Spotted purple fritillaria Claytonia nevadensis • Sierra claytonia Fritillaria purdyi • Purdy’s fritillary, Purdy’s mission bells Claytonia rubra ssp. rubra • Red-stemmed spring beauty Fritillaria recurva • Scarlet mission bells, scarlet fritillary Claytonia sibirica • Sierran montia Lilium kelleyanum • Kelley’s lily Lewisia columbiana • Columbia lewisia Lilium pardalinum • Leopard lily Lewisia cotyledon var. cotyledon • Siskiyou lewisia Lilium washingtonianum var. purpurascens • Cascade lily Lewisia cotyledon var. heckneri • Heckner’s lewisia Prosartes hookeri • Hooker’s fairy bell Lewisia leeana • Lee’s lewisia Streptopus amplexifolius • Clasping-leaved twisted-stalk Lewisia nevadensis • Nevada lewisia Lewisia pygmaea ssp. pygmaea • Alpine or dwarf lewisia LIMNANTHACEAE • Meadow Foam Family Lewisia triphylla • Three-leaved lewisia Floerkea prosperpinacoides • False mermaid Montia chamissoi • Toad-lily Limnanthes douglasii • Douglas’ meadow foam Montia parvifolia • Small-leaved montia Montia perfoliata var. depressa • Dwarf miner’s-lettuce LINACEAE • Flax Family Montia sibirica • Siberian montia Hesperolinon micranthum • Small-flowered dwarf -flax Linum perenne ssp. lewisii • Western blue flax NAMACEAE • Nama Family Eriodictyon californicum • Yerba santa LOASACEAE • Loasa Family Nama lobbii • Lobb’s fiddleleaf Mentzelia dispersa • Nevada blazing star Mentzelia laevicaulis • Blazing star NARTHECIACEAE • Bog-asphodel Family Narthecium californicum • California bog-asphodel MALVACEAE • Mallow or Cotton Family Malva neglecta • Round-leaved mallow NYMPHAEACEAE • Water-lily Family Sidalcea oregana ssp. oregana • Oregon sidalcea Nuphar polysepalum • Indian pond-lily, yellow pond-lily Sidalcea oregana ssp. spicata • Oregon sidalcea OLEACEAE • Olive Family MELANTHIACEAE • Wake Robin Family Fraxinus latifolia • Oregon ash Stenanthium occidentale • Western stenanthium Trillium albidum • Giant white trillium ONAGRACEAE • Evening-primrose Family Trillium chloropetalum • Giant wakerobin Circaea alpina ssp. pacifica • Enchanter’s -nightshade Trillium ovatum ssp. oettingeri • Salmon Mountain wake-robin Clarkia concinna • Red ribbons Veratrum californicum • California false hellebore Clarkia gracilis ssp. gracilis • Godetia Veratrum viride var. eschscholzianum • Green false hellebore Clarkia lassensis • Lassen godetia Xerophyllum tenax • Bear-grass Clarkia rhomboidea • Rhomboid clarkia Zigadenus micranthus • Small-flowered death-camas Epilobium adenocaulon var. occidentale • Northern willow-herb Zigadenus venenosus • Meadow death camas Epilobium anagallidifolium • Pimpernel willow-herb Epilobium angustifolium • Fireweed MONTIACEAE • Miner’s-Lettuce Family Epilobium brachycarpum • Tall annual willow herb Calandrinia ciliata • Fringed red maids Epilobium brevistylum • Slender willow herb

-11- Epilobium ciliatum ssp. ciliatum • Fringed willow herb Dicentra formosa • Pacific bleeding heart Epilobium ciliatum ssp. glandulosum • Fringed willow herb Dicentra pauciflora • Few-flowered bleeding heart Epilobium clavatum • Clavate-fruited willow herb Eschscholzia californica • California-poppy Epilobium glaberrimum var. glaberrimum • Glaucous willow herb Meconella linearis var. pulchella • Narrow-leaved meconella Epilobium glaberrimum var. fastigiatum • Glaucous willow herb Platystemon californicus • Cream cups Epilobium hallianum • Glandular willow herb Epilobium obcordatum ssp. siskiyouense • Rock-fringe PLANTAGINACEAE • Plantain or Plantago Family Epilobium oreganum • Grants Pass willow herb Plantago lanceolata • English plantain Epilobium paniculatum • Panicled willow herb Plantago major • Common plantain Epilobium pringleanum • Slender willow herb Epilobium siskiyouense • Siskiyou fire weed POLEMONIACEAE • Phlox Family Gayophytum diffusum ssp. parviflorum • Spreading groundsmoke Collomia grandiflora • Large-flowered collomia Gayophytum heterozygum • Zig-zag ground smoke Collomia heterophylla • Variable-leaved collomia Gayophytum humile • Dwarf ground smoke Collomia linearis • Narrow-leaved collomia Oenothera glazioviana • Red-sepaled evening-primrose Collomia tinctoria • Yellow-staining collomia Collomia tracyi • Tracy’s collomia ORCHIDACEAE • Orchid Family Gilia aggregata • Scarlet gilia Calypso bulbosa • Calypso Gilia capitata • Blue field gilia Cephalanthera austinae • Phantom orchid Ipomopsis aggregata • Scarlet gilia Corallorhiza maculata • Spotted coral-root Leptosiphon ciliatus • Whisker-brush Corallorhiza mertensiana • Merten’s coral-root Leptosiphon harknesii • Harkness’ linanthus Corallorhiza striata • Striped coral-root Leptosiphon nuttallii • Nuttall’s linanthus Corallorhiza trifida • Northern coral-root, yellow coral-root Microsteris gracilis • Slender phlox Cypripedium californicum • California lady-slipper Navarretia capillaris • Miniature flase gilia Cypripedium fasciculatum • Clustered lady’s-slipper Navarretia divaricata • Mountain pin-cushion plant Cypripedium montanum • Mountain lady’sslipper Navarretia intertexta • Needle-leaved pin-cushion plant Epipactis gigantea • Stream orchid Navarretia linearifolia ssp. pinnatisecta • Alva Day’s pincushion plant Goodyera oblongifolia • Rattlesnake plantain Phlox diffusa • Spreading phlox Listera convallarioides • Broad-lipped twayblade Phlox gracilis • Slender phlox Piperia elegans • Elegant rein orchid Phlox speciosa var. occidentalis • Showy phlox Piperia unalascensis • Alaska or nothern piperia Polemonium californicum • Low polemonium Platanthera dilatata var. leucostachys • Boreal bog orchid Polemonium pulcherrimum ssp. p. • Showy polemonium Platanthera sparsiflora • Sparsely-flowered bog orchid Platanthera unalascensis • Alaska piperia POLYGALACEAE • Milkwort Family Spiranthes romanzoffiana • Hooded ladies’ tresses Rhinotropsis cornuta • Sierra milkwort

PAEONIACEAE • Peony Family POLYGONACEAE • Knotweed or Smartweed Family Paeonia brownii • Western peony Eriogonum compositum var. c. • Arrow-leaved buckwheat Eriogonum congdonii • Congdon’s buckwheat PAPAVERACEAE • Poppy Family Eriogonum diclinum • Jane’s Canyon buckwheat Dendromecon rigida • Bush-poppy Eriogonum elatum • Tall woolly buckwheat

-12- Eriogonum lobbii • Lobb’s buckwheat Aquilegia formosa • Crimson columbine, red columbine Eriogonum luteolum var. luteolum • Golden carpet buckwheat Caltha howellii • White marsh-marigold Eriogonum marifolium var. m. • Marum-leaved buckwheat Caltha leptosepala • Marsh-marigold Eriogonum nudum var. nudum • Naked-stemmed buckwheat Clematis lasianthus • Pipe-stem clematis Eriogonum nudum var. publflorum • Naked-stemmed buckwheat Delphinium decorum ssp. tracyi • Coastal larkspur Eriogonum spergulinum var. reddingianum • Spurry buckwheat Delphinium glaucum • Rocky Mountain larkspur Eriogonum umbellatum var. argus • Sulfur-flowered buckwheat Delphinium nudicaule • Red larkspur Eriogonum umbellatum var. ellipticum • Sulphur-flowered b. Delphinium nuttallianum • Dwarf larkspur Eriogonum umbellatum var. lautum • Scott Valley sulfur flower Isopyrum stipitatum • Siskiyou rue-anemone Eriogonum umbellatum var. nelsoniorum • Nelsons’ sulfur flower Myosurus minimus ssp. montanus • Common mouse-tail Eriogonum umbellatum var. polyanthum • Sulphur-flowered b. Ranunculus alismaefolius var. hartwegii • Water plantain buttercup Eriogonum umbellatum var. umbellatum • Sulphur-flowered b. Ranunculus eschscholtzii var. suksdorfii • Eschscholtz’s buttercup Oxyria digyna • Mountain-sorrel Ranunculus flammula • Creeping spearwort Polygonum bistortoides • Western bistort Ranunculus occidentalis • Western buttercup Polygonum davisiae • Davis’ knotweed Ranunculus orthorhynchus var. o. • Straight-beaked buttercup Polygonum douglasii • Douglas’ knotweed Ranunculus uncinatus • Bongard’s buttercup Polygonum minimum • Leafy dwarf knotweed Thalictrum fendleri • Fendler’s meadow-rue Polygonum persicaria • Lady’s thumb Thalictrum sparsiflorum • Few-flowered meadow-rue Polygonum polygaloides ssp. kelloggii Polygonum spergulariaeforme • Fall knotweed RHAMNACEAE • Buckthorn Family Rumex acetosella • Sheep sorrel Ceanothus cordulatus • Mountain whitethorn Rumex angiocarpus • Sheep sorrel Ceanothus cuneatus • Buck brush Rumex crispus var. crispus • Curly dock Ceanothus integerrimus var. macrothyrus • Deer brush Rumex triangularis • Willow dock Ceanothus lemmonii • Lemmon’s ceanothus, Plumas bush Ceanothus prostratus • Mahala mats PORTULACACEAE •Purslane Family Ceanothus pumilus • Dwarf ceanothus, Siskiyou-mat Portulaca oleracea • Purslane, little hogweed Ceanothus velutinus • Tobacco brush Frangula californica ssp. californica • Coffee berry PRIMULACEAE • Primrose Family Frangula purshiana ssp. purshiana • Cascara sagrada Dodecatheon alpinum ssp. majus • Alpine shooting star Frangula rubra ssp. modocensis • Modoc coffee berry Dodecatheon hendersonii • Henderson’s shooting star Dodecatheon jeffreyi • Jeffrey’s shooting star ROSACEAE • Rose Family Primula suffrutescens • Sierra primrose Amelanchier alnifolia • Saskatoon service-berry Trientalis borealis var. latifolia • Star-flower Amelanchier pallida • Pallid service-berry Amelanchier cf. pumila • Smooth service-berry RANUNCULACEAE • Buttercup or Crowfoot Family Amelanchier utahensis var. utahensis • Utah service berry Aconitum columbianum ssp. c. • Columbia monkshood Aruncus dioicus • Goat’s-beard Actaea rubra ssp. arguta • Western red baneberry Cercocarpus betuloides var. betuloides Anemone deltoidea • Columbia wind flower, wood anemone • Birch-leaved mountain-mahogany Anemone drummondii • Drummond’s anemone Cercocarpus ledifolius var. ledifolius Anemone occidentalis • Western pasque flower • Curl-leaved mountain-mahogany

-13- Crataegus gaylussacia • Suksdorf’s hawthorn Sorbus scopulina • Western mountain-ash Dasiphora fruticosa ssp. floribunda • Shrubby cinquefoil Sorbus sitchensis var. sitchensis • Sitka mountain-ash Drymocallis glandulosa var. reflexa • Greene’s wood beauty Spiraea splendens var. splendens • Rose-colored meadow-sweet Drymocallis lactea var. austinae • Austin’s cinquefoil Spiraea douglasii var. douglasii • Douglas’ spiraea Drymocallis lactea var. lactea •Sierran wood beauty Fragaria vesca ssp. californica • California strawberry RUBIACEAE • Madder Family Fragaria virginiana ssp. platypetala • Virginia strawberry Galium aparine • Goose-grass Geum macrophyllum • Large-leaved avens Galium bifolium • Low mountain bedstraw Holodiscus microphyllus var. microphyllus • Ocean spray Galium bolanderi • Bolander’s bedstraw Holodiscus discolor • Oceanspray Galium glabrescens ssp. glabrescens • Gray’s bedstraw Horkelia daucifolia • Carrot-leaved horkelia Galium multiflorum • Kellogg’s bedstraw Horkelia fusca ssp. parviflora • Dusky horkelia Galium triflorum • Fragrant bedstraw Horkelia tridentata var. tridentata • Three-toothed horkelia Kelloggia galioides • Milky kelloggia Ivesia gordonii • Alpine mouse-tail Ivesia pickeringii • Pickering’s or silky ivesia SALICACEAE • Willow Family Luetkea pectinata • Luetkea Populus balsamorhiza ssp. trichocarpa • Black cottonwood Oemleria cerasiformis • Oso berry Populus tremuloides • Quaking aspen Physocarpus capitatus • Pacific ninebark Salix commutata • Sierra willow Potentilla breweri • Brewer’s cinquefoil Salix eastwoodiae • Eastwood’s willow Potentilla flabellifolia • Mount Ranier cinquefoil Salix exigua • Slender willow Potentilla fruticosa • Shrubby cinquefoil Salix jepsonii • Jepson’s willow Potentilla gracilis var. fastigiata • Slender cinquefoil Salix lasiandra var. lasiandra Potentilla gracilis ssp. nuttallii • Slender cinquefoil Salix lucida ssp. lasiandra • Shining willow Prunus emarginata • Bitter cherry Salix scouleriana • Scouler’s willow Prunus subcordata var. subcordata • Klamath plum Salix sitchensis • Sitka willow Prunus virginiana var. demissa • Western choke cherry Purshia tridentata • Northern antelope bush SAMBUCACEAE • Elderberry Family Rosa californica • California rose Sambucus nigra ssp. caerulea • Blue elderberry Rosa gymnocarpa • Wood rose Sambucus racemosa var. melanocarpa • Black elderberry Rosa nutkana • Nootka rose Sambucus racemosa var. racemosa • Mountain red elderberry Rosa pinetorum • Pine rose Rosa pisocarpa • Clustered rose SANTALACEAE • Sandalwood Family Rosa spithamea • Ground rose Comandra umbellata ssp. californica • Bastard toad-flax Rosa woodsii var. ultramontana • Interior or montane rose Rubus leucodermis • White-stemmed raspberry SARRACENIACEAE • Pitcher Plant Family Rubus ursinus ssp. macropetalus • California dewberry Darlingtonia californica • California pitcher plant Rubus parviflorus • Thimble berry Rubus ursinus • California blackberry, California dewberry SAXIFRAGACEAE • Saxifrage Family Sanguisorba annua • Prairie burnet Boykinia major • Mountain boykinia Sibbaldia procumbens • Creeping sibbaldia Darmera peltata • Indian-rhubarb Sorbus californica • California mountain-ash Heuchera merriamii • Trinity alum root

-14- Heuchera micrantha • Small-flowered alum root Mimulus layneae • Layne’s monkey-flower Heuchera pilosissima • Seaside alum root Mimulus lewisii • Lewis’ monkey-flower Lithophragma bulbifera • Rock star Mimulus moschatus var. moniliformis • Musk flower Lithophragma campanulatum • Siskiyou Mountain woodland star Mimulus moschatus var. moschatus • Musk flower Lithophragma glabrum • mooth fringe-cup Mimulus nanus • Dwarf purple monkey-flower Lithophragma heterophylla • Hillside woodland star Mimulus primuloides var. pilosellus • Primrose monkey-flower Lithophragma parviflorum var. trifoliatum • Prairie woodland star Mimulus primuloides • Primrose monkey-flower Micranthes aprica • Sierra saxifrage Mimulus primuloides ssp. linearifolius • Yellow creeping monkey-flower Micranthes bryophora • Bud saxifrage Mimulus pulsiferae • Candelabrum monkey-flower Micranthes ferruginea • Alaska saxifrage Mimulus tilingii • Larger mountain monkey-flower Micranthes nidica • Peak saxifrage Nothochelone nemorosa • Woodland beardtongue Micranthes odontoloma • Brook saxifrage Orobanche fasciculata • Clustered broomrape Micranthes tolmiei • Alpine saxifrage Orobanche uniflora • Naked broomrape Mitella pentandra • Alpine mitrewort Orthocarpus copelandii • Copeland’s owl’s-clover Mitella trifida • Pacific mitella Orthocarpus cuspidatus ssp. copelandii • Copeland’s owl’s-clover Saxifraga mertensiana • Wood saxifrage Orthocarpus lacerus • Yellow owl’s-clover Saxifragopsis fragarioides • Joint-leaved saixfrage Pedicularis attolens • Little elephant’s head Suksdorfia ranunculifolia • Buttercup-leaved suksdorfia Pedicularis contorta • White coiled-beak lousewort Tellima grandiflora • Fringe cups Pedicularis densiflora • Indian warrior Pedicularis bracteosa var. flavida • Cascade Mountains lousewort SCROPHULARIACEAE • Figwort or Snapdragon Family Pedicularis racemosa • Leafy lousewort Boschniakia strobilacea • California ground pine Penstemon anguineus • Siskiyou penstemon Castilleja applegatei ssp. pinetorum • Wavy-leaved paint-brush Penstemon azureus var. azureus • Azure penstemon Castilleja arachnoidea • Cobwebby paint-brush Penstemon davidsonii • Creeping penstemon Castilleja miniata ssp. miniata • Great red paint-brush Penstemon deustus var. suffrutescens • Hot-rock penstemon Castilleja pilosa • Parrot-headed paint-brush Penstemon filiformis • Thread-leaved penstemon Collinsia linearis • Rattan’s blue-eyed Mary Penstemon gracilentus • Slender penstemon Collinsia parviflora • Small-flowered blue-eyed Mary Penstemon heterodoxus var. cephalophora • Sierra beardtongue Collinsia torreyi var. latifolia • Torrey’s blue-eyed Mary Penstemon laetus var. laetus • Mountain blue penstemon Cordylanthus viscidus • Viscid bird’s-beak Penstemon laetus var. sagittatus • Mountain blue penstemon Digitalis purpurea • Purple foxglove Penstemon nemorosus • Woodland penstemon Gratiola ebracteata • Bractless hedge-hyssop, wallow-hyssop Penstemon newberryi ssp. berryi • Mountain pride Keckiella corymbosa • Bush penstemon Penstemon newberryi ssp. newberryi • Mountain pride Keckiella lemmonii • Bush beard-tongue Penstemon parvulus • Small azue penstemon Linaria genistifolia spp. dalmatica • Dalmatian toad-flax Penstemon procerus ssp. procerus • Whorled penstemon Mimulus alsinoides • Wing-stemmed monkey flower Penstemon procerus ssp. brachyanthus • Small-flowered penstemon Mimulus bicolor • Yellow and white monkey flower Penstemon purpusii • Purpus’ penstemon Mimulus breweri • Brewer’s monkey-flower Penstemon roezlii • Blue penstemon Mimulus cardinalis • Scarlet monkey-flower Penstemon rydbergii var. oreocharis • Rydberg’s penstemon Mimulus guttatus • Seep monkey-flower Penstemon tracyi • Tracy’s penstemon Mimulus kelloggii • Kellogg’s monkey-flower Verbascum blattaria • Moth mullein

-15- Verbascum thapsus • Common mullein Lomatium nudicaule • Pestle-parsnip Veronica alpina var. alternifolia • American alpine speedwell Lomatium tracyi • Tracy’s desert-parsley Veronica americana • American brookline Lomatium utriculatum • Hog-fennel Veronica anagallis-aquatica • Water speedwell Orogenia fusiformis • California orogenia Veronica copelandii • Copeland’s speedwell Osmorhiza berteroi • Mountain sweet-cicely Veronica persica • Persian speedwell Osmorhiza chilensis • Mountain sweet-cicely Veronica serpyllifolia var. humifusa • Thyme-leaved speedwell Osmorhiza occidentalis • Western sweet-cicely Veronica wormskjoldii • American alpine speedwell Perideridia gairdneri • Gairdner’s yampah Perideridia parishii ssp. latifolia • Parish’s yampah SMILACACEAE • Smilax or Greenbriar Family Sanicula bipinnatifida • Purple sanicle Smilax californica • California greenbrier Sanicula crassicaulis • Thick-stemmed sanicle Smilax jamesii • English Peak greenbrier Sanicula graveolens • Sierra sanicle Sanicula tuberosa • Tuberous sanicle, turkey-pea SOLANACEAE • Nightshade or Potato Family Sium suave var. suave • Water-parsnip Leucophysalis nana • Dwarf false ground-cherry Tauschia glauca • Glaucous umbrella-wort Nicotiana attenuata • Coyote tobacco Torilis arvensis • Hedge-parsley Solanum parishii • Parish’s nightshade Solanum umbelliferum • Blue witch, blue nightshade URTICACEAE • Nettle or Stinging Nettle Family Urtica dioica ssp. holosericea • Stinging nettle STYRACACEAE • Storax Family Styrax rediviva • Snowdrop bush, chaparral snowbell VALERIANACEAE • Valerian Family Plectritis congesta ssp. brachystemon • Pink plectritis TOFIELDIACEAE • False Asphodel Family Valeriana californica • California valerian Triantha occidentalis ssp. occidentalis • Western tofieldia Valeriana sitchensis ssp. sitchensis • Mountain valerian

TYPHACEAE • Cat-tail Family VERBENACEAE • Verbena or Vervain Family Sparganium emerum • Unbranched bur-reed Verbena lasiostachys • Western verbena Sparganium angustifolium • Narrow-leaved bur-reed VIOLACEAE • Violet Family UMBELLIFERAE (APIACEAE) • Carrot or Umbel Family Viola adunca • Dog violet Angelica arguta • Lyall’s angelica Viola bakeri • Baker’s violet Angelica breweri • Brewer’s angelica Viola cuneata • Wedge-leaved violet Angelica tomentosa • California or wood angelica Viola douglasii • Douglas’ golden violet Daucus carota • Wild carrot, Queen Anne’s lace Viola glabella • Stream violet Daucus pusilla • Rattlesnake weed Viola hallii • Oregon violet Heracleum maximum • Cow-parsnip Viola lobata ssp. lobata • Pine or wood violet Ligusticum californicum • California lovage Viola lobata ssp. integrifolia • Moose-horn violet Lomatium dissectum var. multifidum • Carrot-leaved lomatium Viola macloskeyi • Macloskey’s violet Lomatium engelmannii • Engelmann’s lomatium Viola ocellata • Western heart’s-ease, pinto violet Ligusticum grayi • Gray’s lovage Viola purpurea • Mountain violet Lomatium macrocarpum • Large-fruited lomatium Viola sheltonii • Shelton’s violet

-16- VISCACEAE (Mistletoe Family Arceuthobium campylopodum • Western dwarf mistletoe Phoradendron juniperinum • Incense-cedar mistletoe

SOURCES

My primary sources are Ferlatte (1970, 1974, 1979) and the Consortium of California Herbaria.

DeCamp, K., J. 2017. Wildflowers of the Trinity Alps. Edited and reviewed by J. Kierstead Nelson & J. Knorr. Backcountry Press. Kneeland, CA. 336 pp.

Eastwood, A. 1902. From Redding to the snow clad peaks of Trinity County; also, list of trees and shrubs on route. Sierra Club Bull. 4: 39- 58.

Ferlatte, W. J. 1970. A flora of the Trinity Alps of northern California. M. A. thesis. Humboldt State College. Arcata, CA. 231 pp.

Ferlatte, W. J. 1974. A flora of the Trinity Alps of northern California. Univ. California Press. Berkeley. 206 pp.

Ferlatte, W. J. 1979. Vascular plants found to occur in the Trinity Alps since A flora of the Trinity Alps of northern California was published in 1974. Typescript distributed by the author.

Jones, A. G. 2000. Flowers and trees of the Trinity Alps: a photographic guide. Revised and expanded edition. Trinity County Historical Soc. Weaverville, CA. 304 pp.

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A D D I T I O N A L S O U R C E S

Consortium California Herbaria HSU Advanced Plant Taxonomy field trips HSU Vascular Plant Herbarium

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