Vascular Plants of the Horse Mountain Serpentines Humboldt County, California
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Humboldt State University Digital Commons @ Humboldt State University Botanical Studies Open Educational Resources and Data 2017 Vascular Plants of the Horse Mountain Serpentines Humboldt County, California 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., "Vascular Plants of the Horse Mountain Serpentines Humboldt County, California" (2017). Botanical Studies. 51. https://digitalcommons.humboldt.edu/botany_jps/51 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]. VASCULAR PLANTS OF THE HORSE MOUNTAIN SERPENTINES HUMBOLDT COUNTY, CALIFORNIA Compiled by James P. Smith, Jr. & John O. Sawyer, Jr. Department of Biological Sciences Humboldt State University Second Edition • 26 May 2009 Horse Mountain (elevation 4952 ft.) is located at N BERBERIDACEAE • BARBERRY 40.874, W -123.73. The closest town is Willow Creek, Achlys triphylla Vanilla leaf about 15 miles to the northeast. Access is via County Mahonia aquifolium Oregon-grape Road 1 (Titlow Hill Road) off State Route 299. About Mahonia nervosa Oregon-grape Vancouveria planipetala Inside-out flower 1100 acres have been set aside as the Horse Mountain Botanical Area, administered by the Six Rivers National BETULACEAE • BIRCH Forest. Corylus cornuta var. californica California hazel nut LYCOPHYTES & FERNS BORAGINACEAE • BORAGE Cryptantha torreyana Torrey’s cryptantha Adianum pedatum var. aleuticum Maidenhair fern Aspidotis densa Indian’s dream CAMPANULACEAE • BELLFLOWER Athryium filix-femina Lady fern Asyneuma prenanthoides California harebell Cheilanthes gracillima Lace fern Campanula scouleri Scouler’s harebell Cryptogramma achrostichoides Parsley fern Polystichum munitum Sword fern CAPRIFOLIACEAE • HONEYSUCKLE Pteridium aquilinum var. pubescens Bracken fern Symphoricarpos mollis Creeping snowberry Selaginella wallacei Wallace’s spike-moss CARYOPHYLLACEAE • PINK CONIFERS Arenaria macrophylla Big-leaved sandwort Abies concolor White fir Minuartia nuttallii ssp. gregaria Nuttall’s sandwort Calocedrus decurrens Incense-cedar Moehringia macrophylla Large-leaved sandwort Chamaecyparis lawsoniana Port Orford-cedar Pseudostellaria jamesiana Sticky sandwort Pinus attenuata Knobcone pine Silene californica California Indian pink Pinus jeffreyi Jeffrey pine Silene campanulata ssp. glandulosa Mountain catchfly Pinus lambertiana Sugar pine Silene laciniata ssp. californica California Indian pink Pinus monticola Western white pine Stellaria nitens Shining chickweed Pinus ponderosa Ponderosa pine Pseudotsuga menziesii Douglas-fir COMPOSITAE (ASTERACEAE) • SUNFLOWER Achillea millefolium Yarrow FLOWERING PLANTS Agoseris heterophylla var. heterophylla Annual agoseris Antennaria luzuloides Woodrush pussy-toes ACERACEAE • MAPLE Antennaria suffrutescens Evergreen pusseytoes Acer glabrum var. torreyi Torrey’s maple Arnica cernua Nodding arnica Acer macrophyllum Big-leaf maple Arnica discoidea Rayless arnica Brickellia greenei Greene’s tassel flower APOCYNACEAE • DOGBANE Chaenactis douglasii var. douglasii Dusty maidens Apocynum androsaemifolium Mountain-hemp Cirsium arvense Canada thistle Cirsium douglasii var. breweri Brewer’s thistle ARALIACEAE • ARALIA Cirsium douglasii var. douglasii Swamp thistle Aralia californica California spikenard Cirsium occidentale var. venustum Venus thistle Crepis acuminata Long-leaved hawk’s-beard ARISTOLOCHIACEAE • DUTCHMAN’S PIPE Crepis pleurocarpa Naked-stemmed hawk’s-beard Asarum caudatum Long-tailed wild ginger Ericameria nauseosa var. speciosa Rubber rabbit brush Asarum hartwegii Hartweg’s wild ginger Eriophyllum lanatum var. lanceolatum Woolly-sunflower -1- Hemizonella minima Miniature tarweed Garrya elliptica Coast silk-tassel Hieracium albiflorum White-flowered hawkweed Hieracium bolanderi Bolander’s hawkweed GENTIANACEAE • GENTIAN Madia elegans Common madia Gentiana calycosa Explorer’s gentian Madia gracilis Slender tarweed Microseris laciniata ssp. leptosepala Slender silverpuffs GRAMINEAE (POACEAE) • GRASS Microseris nutans Nodding silverpuffs Agrostis oregonensis Oregon redtop Symphyotrichum spathulatum Western mountain-aster Bromus carinatus California brome Wyethia angustifolia Narrow-leaved mule’s-ear Bromus tectorum Downy brome Wyethia longicaulis Humboldt County mule’s-ears Calamagrostis koelerioides Tufted pine grass Calamagrostis ophitidis Serpentine reed grass CONVOLVULACEAE • MORNING GLORY Dactylis glomerata Orchard grass Calystegia occidentalis ssp. occidentalis Morning glory Danthonia unispicata One-spiked oat grass Elymus glaucus Blue wild-rye CORNACEAE • DOGWOOD Elymus multisetus Big squirrel-tail Cornus nuttallii Nuttall’s dogwood Elymus x hansenii Hansen’s squirrel-tail Festuca californica ssp. californica California fescue CRASSULACEAE • STONECROP Festuca idahoensis Idaho fescue Sedum laxum ssp. flavidum Pale-yellow stonecrop Festuca rubra Red fescue Sedum laxum ssp. heckneri Heckner’s stonecrop Melica geyeri Geyer’s onion grass Sedum obtusatum ssp. retusum Sierra stonecrop Melica harfordii Harford’s melic Sedum spathulifolium Broad-leaved stonecrop Phleum alpinum Alpine timothy Phleum pratense Timothy CRUCIFERAE (BRASSICACEAE) • MUSTARD Poa pringlei Pringle’s blue grass Cardamine nuttallii Nuttall’s toothwort Polypogon sp. Beard grass Erysimum capitatum Western wallflower Stipa lemmonii Lemmon’s needle grass Streptanthus tortuosus Mountain jewel flower GROSSULARIACEAE • GOOSEBERRY CYPERACEAE • SEDGE Ribes lobbii Gummy gooseberry Carex athrostachya Slender-beaked sedge Ribes sanguineum Red-flowered currant Carex concinnoides Northwestern sedge Ribes velutinum Plateau gooseberry Carex echinata Star sedge Carex geyeri Elk sedge HYDRANGEACEAE • HYDRANGEA Carex mendocinensis Mendocino sedge Philadelphus lewisii Lewis’ mock-orange Carex multicostata Many-ribbed sedge Whipplea modesta Yerba de selva Carex serratodens Saw-toothed sedge Carex subfusca Rusty sedge HYDROPHYLLACEAE • WATER-LEAF Hydrophyllum occidentale Western waterleaf ERICACEAE • HEATH Nemophila menziesii White-flowered baby blue-eyes Allotropa virgata Sugar stick Phacelia corymbosa Serpentine phacelia Arbutus menziesii Madrone Phacelia mutabilis Changeable phacelia Arctostaphylos canescens sonomensis Hoary manzanita Arctostaphylos glandulosa ssp. g. Eastwood’s manzanita HYPERICACEAE • ST. JOHN’S WORT Arctostaphylos nevadensis Pinemat manzanita Hypericum scouleri Scouler’s Klamath weed Arctostaphylos patula Green leaf manzanita Chimaphila umbellata var. occidentalis Western prince’s-pine IRIDACEAE • IRIS Gaultheria ovatifolia Oregon spicu wintergreen Iris macrosiphon Slender-tubed iris Gaultheria shallon Salal Iris purdyi Purdy’s iris Pityopus californica California pinefoot Iris tenuissima Long-tubed iris Pterospora andromedea Pine drops Sisyrinchium bellum California blue-eyed-grass Pyrola picta White-veined wintergreen Rhododendron occidentale Western azalea JUNCACEAE • RUSH Vaccinium parvifolium Red huckleberry Juncus ensifolius Dagger-leaved rush Luzula comosa Wood rush FAGACEAE • OAK OR BEECH Chrysolepis chrysophylla Chinquapin LABIATAE (LAMIACEAE) • MINT Notholithocarpus densiflorus Tanoak Monardella odoratissima ssp. glauca Pale monardella Quercus chrysolepis var. chrysolepis Canyon live oak Scutellaria antirrhninoides Snapdragon skullcap Quercus chrysolepis var. nana Dwarf canyon live oak Stachys rigida Rough hedge-nettle Quercus vacciniifolia Huckleberry oak LEGUMINOSAE (FABACEAE) • LEGUME GARRYACEAE • SILK-TASSEL Lathyrus sp. Sweet pea Garrya buxifolia Dwarf silk-tassel Lotus crassifolius Broad-leaved trefoil -2- Lotus denticulatus Toothed trefoil Navarretia linearifolia ssp. l. Alva Day’s pincushion plant Lotus humistratus Foothill trefoil Phlox diffusa Spreading phlox Lotus oblongifolius Narrow-leaved trefoil Phlox douglasii Tufted phlox Lupinus albicaulis Pine lupine Lupinus adsurgens Silky lupine PORTULACACEAE • PURSLANE Trifolium longipes ssp. hansenii Hansen’s clover Claytonia lanceolata Western spring beauty Claytonia perfoliata Miner’s-lettuce LILIACEAE • LILY Claytonia saxosa Brandegee’s spring beauty Allium falcifolium Scythe-leaved onion Allium siskiyouense Siskiyou onion PRIMULACEAE • PRIMROSE Broaiaea elegans ssp. elegans Harvest onion Dodecatheon hendersonii Henderson’s shooting star Calochortus tolmiei Tolmie’s pussy-ears Trientalis latifolia Broad-leaved star flower Dichelostemma capitatum ssp. capitatum Blue dicks Erythronium californicum California fawn lily RANUNCULACEAE • BUTTERCUP Erythronium grandiflorum var. grandiflorum Glacier lily Anemone quinquefolia var. minor Five-leaved anemone Fritillaria affinis Mission bells Anemone oregana var. oregana Oregon wind flower Fritillaria purdyi Purdy’s fritillaria Aquilegia formosa Crimson columbine Hastingsia alba White rush-lily Delphinium decorum ssp. tracyi Tracy’s larkspur Lilium pardalinum ssp. pardalinum Leopard lily Delphinium trolliifolium Poison larkspur Lilium washingtonianum ssp. purpurascens Shasta lily Ranunculus californicus var. c. California buttercup Maianthemum racemosum False lily-of-the-valley Ranunculus occidentalis