Vascular Plant List
Steens Mountain
Steens Mountain. Harney County, OR. List covers plants found on Steens Mountain and the bordering lowlands, including Alvord Desert, Folly Farm, Diamond Craters and Frenchglen. Study by Donald H Mansfield, 1995. 1053 spp
These lists represent the work of different WNPS members over the years.
Their accuracy has not been verified by the Washington Native Plant Society.
We offer these lists to individuals as a tool to enhance the enjoyment and study of native plants.
* - IntroducedScientific Name / Common Name / Family Name
Abies concolor / White fir / Pinaceae
Abronia turbinata / Sand verbena / Nyctaginaceae
Acer negundo* / Box elder / Aceraceae
Achillea millifolium / Yarrow / Asteraceae
Aconitum columbianum / Monkshood / Ranunculaceae
Actaea rubra / Baneberry / Ranunculaceae
Agastache cusickii / Cusick's horsemint / Lamiaceae
Agastache urticifolia / Nettle-leaf horse-mint / Lamiaceae
Agoseris aurantiaca / Orange agoseris / Asteraceae
Agoseris glauca / Mountain agoseris / Asteraceae
Agoseris grandiflora / Large-flowered agoseris / Asteraceae
Agoseris heterophylla / Annual agoseris / Asteraceae
Agoseris retrorsa / Spear-leaf agoseris / Asteraceae
Agropyron caninum / Bearded wheatgrass / Poaceae
Agropyron cristatum* / Crested wheatgrass / Poaceae
Agropyron dasytachyum / Thickspike wheatgrass / Poaceae
Agropyron intermedium* / Intermediate wheatgrass / Poaceae
Agropyron scribneri / Scribner's wheatgrass / Poaceae
Agropyron smithii / Bluestem / Poaceae
Agropyron spicatum / Blue-bunch wheatgrass / Poaceae
Agropyron trachycaulum / Slender wheatgrass / Poaceae
Agropyron triticeum* / Annual wheatgrass / Poaceae
Agrostis alba* / Red top / Poaceae
Agrostis exarata* / Spike bentgrass / Poaceae
Agrostis humilus / Alpine bentgrass / Poaceae
Agrostis idahoensis / Idaho bentgrass / Poaceae
Agrostis interrupta* / Interrupted apera / Poaceae
Agrostis pallens / Dune bentgrass / Poaceae
Agrostis scabra / Tickle-grass / Poaceae
Agrostis thurberiana / Thurber bentgrass / Poaceae
Agrostis variabilis / Variable bentgrass / Poaceae
Alisma graminium / Narrowleaf water-plantain / Alismataceae
Alisma plantago-aquatica / American water-plantain / Alismataceae
Allenrolfea occidentalis / Iodine bush / Chenopodiaceae
Allium acuminatum / Taper-tip onion / Liliaceae
Allium amplectens / Slim-leaf onion / Liliaceae
Allium anceps / Anceps onion / Liliaceae
Allium bisceptrum / Two-stemmed onion / Liliaceae
Allium campanulatum / Sierra onion / Liliaceae
Allium geyeri / Geyer's onion / Liliaceae
Allium lemmonii / Lemmon's onion / Liliaceae
Allium madidum / Swamp onion / Liliaceae
Allium nevadense / Nevada onion / Liliaceae
Allium parvum / Dwarf onion / Liliaceae
Allium punctum / Punctate onion / Liliaceae
Allium tolmiei / Tolmie's onion / Liliaceae
Alnus incana / Mountain alder / Betulaceae
Alnus sinuata / Sitka alder / Betulaceae
Alopecurus aequalis / Short-awned foxtail / Poaceae
Alopecurus geniculatus / Water foxtail / Poaceae
Alopecurus pratensis* / Meadow foxtail / Poaceae
Alyssum alyssoides* / Pale alyssum / Brassicaceae
Alyssum desertorum* / Desert alyssum / Brassicaceae
Alyssum minus / Coarse-haired alyssum / Brassicaceae
Amaranthus albus* / White pigweed / Amaranthaceae
Amaranthus blitoides / Prostrate pigweed / Amaranthaceae
Amaranthus retroflexus* / Red-root pigweed / Amaranthaceae
Ambrosia acanthicarpa / Bur ragweed / Asteraceae
Ambrosia artemisiifolia / Annual ragweed / Asteraceae
Amelanchier alnifolia / Serviceberry / Rosaceae
Amelanchier utahensis / Utah serviceberry / Rosaceae
Amsinckia lycopsoides / Bugloss fiddleneck / Boraginaceae
Amsinckia menziesii / Menzies' fiddleneck / Boraginaceae
Amsinckia tessellata / Devil's lettuce / Boraginaceae
Anaphalis margaritacea / Pearly everlasting / Asteraceae
Angelica arguta / Sharp-tooth angelica / Apiaceae
Antennaria alpina / Alpine pussy-toes / Asteraceae
Antennaria anaphaloides / Tall pussy-toes / Asteraceae
Antennaria corymbosa / Flat-topped pussytoes / Asteraceae
Antennaria dimorpha / Low pussy-toes / Asteraceae
Antennaria luzuloides / Woodrush pussy-toes / Asteraceae
Antennaria microphylla / Rosy pussy-toes / Asteraceae
Antennaria stenophylla / Narrow-leaf pussy-toes / Asteraceae
Antennaria umbrinella / Umber pussy-toes / Asteraceae
Anthemis arvensis* / Field chamomile / Asteraceae
Apocynum androsaemifolium / Spreading dogbane / Apocynaceae
Apocynum cannabinum / Hemp dogbane / Apocynaceae
Aquilegia formosa / Red columbine / Ranunculaceae
Arabis cobrensis / Masonic rockcress / Brassicaceae
Arabis divaricarpa / Spreadingpod rockcress / Brassicaceae
Arabis drummondii / Drummond's rockcress / Brassicaceae
Arabis glabra / Tower mustard / Brassicaceae
Arabis hirsuta / Hairy rockcress / Brassicaceae
Arabis holboellii / Holboell's rockcress / Brassicaceae
Arabis lyallii / Lyall's rockcress / Brassicaceae
Arabis microphylla / Small-leaf rockcress / Brassicaceae
Arabis puberula / Hoary rockcress / Brassicaceae
Arabis sparsiflora / Sicklepod rockcress / Brassicaceae
Arabis suffrutescens / Crater Lake rockcress / Brassicaceae
Arctium minus* / Common burdock / Asteraceae
Arctostaphylos uva-ursi / Bearberry / Ericaceae
Arenaria aculeata / Prickly sandwort / Caryophyllaceae
Arenaria capillaris / Thread-leaved sandwort / Caryophyllaceae
Arenaria congesta / Dense-flowered sandwort / Caryophyllaceae
Arenaria franklinii / Franklin's sandwort / Caryophyllaceae
Arenaria kingii / King's sandwort / Caryophyllaceae
Arenaria nuttallii / Nuttall's sandwort / Caryophyllaceae
Arenaria rubella / Reddish sandwort / Caryophyllaceae
Argemone munita* / Flatbud prickly poppy / Papaveraceae
Arnica chamissonis / Meadow arnica / Asteraceae
Arnica cordifolia / Heart-leaf arnica / Asteraceae
Arnica longifolia / Seep-spring arnica / Asteraceae
Arnica mollis / Hairy arnica / Asteraceae
Arnica parryi / Nodding arnica / Asteraceae
Arnica rydbergii / Rydberg's arnica / Asteraceae
Arnica sororia / Twin arnica / Asteraceae
Arrhenatherum elatius* / Oat-grass / Poaceae
Artemisia arbuscula / Low sagebrush / Asteraceae
Artemisia cana / Silver sagebrush / Asteraceae
Artemisia dracunculus / Tarragon / Asteraceae
Artemisia ludoviciana / Western mugwort / Asteraceae
Artemisia michauxiana / Michaux mugwort / Asteraceae
Artemisia rigida / Stiff sagebrush / Asteraceae
Artemisia spinescens / Budsage / Asteraceae
Artemisia tridentata / Big sagebrush / Asteraceae
Asclepias fascicularis / Mexican milkweed / Asclepiadaceae
Asclepias speciosa / Showy milkweed / Asclepiadaceae
Aster alpigenus / Alpine aster / Asteraceae
Aster ascendens / Long-lived aster / Asteraceae
Aster eatonii / Eaton's aster / Asteraceae
Aster foliaceus / Leafy aster / Asteraceae
Aster frondosus / Alkali aster / Asteraceae
Aster occidentalis / Western aster / Asteraceae
Astragalus alvordensis / Alvord milkvetch / Fabaceae
Astragalus conjunctus / Rattlesnake Mt. milk-vetch / Fabaceae
Astragalus curvicarpus / Curvepod milk-vetch / Fabaceae
Astragalus filipes / Basalt milk-vetch / Fabaceae
Astragalus geyeri / Geyer's milk-vetch / Fabaceae
Astragalus iodanthus / Humboldt River milkvetch / Fabaceae
Astragalus lentiginosus / Specklepod milk-vetch / Fabaceae
Astragalus malacus / Shaggy milkvetch / Fabaceae
Astragalus obscurus / Arcane milkvetch / Fabaceae
Astragalus purshii / Pursh's milk-vetch / Fabaceae
Astragalus whitneyi / Balloon milk-vetch / Fabaceae
Athyrium distentifolium / Alpine lady fern / Polypodiaceae
Athyrium filix-femina / Lady fern / Polypodiaceae
Atriplex argentea / Silverscale / Chenopodiaceae
Atriplex canescens / Fourwing saltbush / Chenopodiaceae
Atriplex confertifolia / Shadscale / Chenopodiaceae
Atriplex nuttallii / Saltsage / Chenopodiaceae
Atriplex patula / Orache / Chenopodiaceae
Atriplex pusilla / Orache / Chenopodiaceae
Atriplex rosea* / Red orache / Chenopodiaceae
Atriplex spinosa / Spiny hop sage / Chenopodiaceae
Atriplex truncata / Wedgescale orache / Chenopodiaceae
Balsamorhiza hookeri / Hooker's balsamroot / Asteraceae
Balsamorhiza sagittata / Arrow-leaf balsamroot / Asteraceae
Balsamorhiza serrata / Toothed balsamroot / Asteraceae
Barbarea orthoceras / American wintercress / Brassicaceae
Bassia hyssopifolia / Smotherweed / Chenopodiaceae
Beckmannia syzigachne / Sloughgrass / Poaceae
Berberis repens / Creeping Oregongrape / Berberidaceae
Berula erecta / Cutleaf water-parsnip / Apiaceae
Betula glandulosa / Bog birch / Betulaceae
Betula papyrifera / Paper birch / Betulaceae
Bidens cernua / Nodding beggar-ticks / Asteraceae
Blepharipappus scaber / Blepharipappus / Asteraceae
Boisduvalia densiflora / Dense spike-primrose / Onagraceae
Boisduvalia stricta / Brook spike-primrose / Onagraceae
Botrychium lanceolatum / Triangle moonwort / Ophioglossaceae
Botrychium minganense / Moonwort / Ophioglossaceae
Botrychium pinnatum / Moonwort / Ophioglossaceae
Botrychium simplex / Little grape-fern / Ophioglossaceae
Brickellia grandiflora / Large-flowered brickellia / Asteraceae
Brickellia microphylla / Small-leaved brickellia / Asteraceae
Brodiaea douglasii / Douglas' brodiaea / Liliaceae
Brodiaea hyacinthina / Hyacinth brodiaea / Liliaceae
Bromus carinatus / California brome / Poaceae
Bromus inermis* / Smooth brome / Poaceae
Bromus japonicus* / Japanese brome / Poaceae
Bromus mollis* / Soft brome / Poaceae
Bromus secalinus / Chess / Poaceae
Bromus tectorum* / Cheat grass / Poaceae
Calamagrostis canadensis / Bluejoint / Poaceae
Calamagrostis purpurescens / Purple pinegrass / Poaceae
Callitriche hermaphroditica / Autumnal water-starwort / Callitrichaceae
Callitriche verna / Spring water-starwort / Callitrichaceae
Calochortus bruneaunis / Bruneau mariposa / Liliaceae
Calochortus eurycarpus / Wide-fruit mariposa / Liliaceae
Calochortus macrocarpus / Sagebrush mariposa / Liliaceae
Caltha biflora / White marshmarigold / Ranunculaceae
Caltha leptosepala / Elkslip / Ranunculaceae
Camassia quamash / Common camas / Liliaceae
Camelina microcarpa* / Hairy false-flax / Brassicaceae
Canbya aurea / Golden canbya / Papaveraceae
Capsella bursa-pastoris* / Shepherd's purse / Brassicaceae
Cardamine oligosperma / Little Western bittercress / Brassicaceae
Cardamine pensylvanica / Pennsylvania bittercress / Brassicaceae
Cardaria draba* / Hoary cress / Brassicaceae
Cardaria pubescens* / Globepodded hoary cress / Brassicaceae
Carduus nutans* / Musk thistle / Asteraceae
Carex amplifolia / Big-leaf sedge / Cyperaceae
Carex aquatilis / Water sedge / Cyperaceae
Carex arthrostachya / Slender-beak sedge / Cyperaceae
Carex atherodes / Awned sedge / Cyperaceae
Carex atrata / Blackened sedge / Cyperaceae
Carex aurea / Golden sedge / Cyperaceae
Carex backii / Rocky Mountain sedge / Cyperaceae
Carex capitata / Capitate sedge / Cyperaceae
Carex douglasii / Douglas' sedge / Cyperaceae
Carex filifolia / Thread-leaf sedge / Cyperaceae
Carex foetida / Foetid sedge / Cyperaceae
Carex hoodii / Hood's sedge / Cyperaceae
Carex illota / Sheep sedge / Cyperaceae
Carex jonesii / Jones' sedge / Cyperaceae
Carex lanuginosa / Wooly sedge / Cyperaceae
Carex lenticularis / Lenticular sedge / Cyperaceae
Carex luzulina / Woodrush sedge / Cyperaceae
Carex microptera / Small-winged sedge / Cyperaceae
Carex multicostata / Many-ribbed sedge / Cyperaceae
Carex nebrascensis / Nebraska sedge / Cyperaceae
Carex nigricans / Black alpine sedge / Cyperaceae
Carex nova / New sedge / Cyperaceae
Carex pellita / Woolly sedge / Cyperaceae
Carex petasata / Liddon's sedge / Cyperaceae
Carex phaeocephala / Mountain hare sedge / Cyperaceae
Carex praeceptorum / Teacher's sedge / Cyperaceae
Carex praegracilis / Silver sedge / Cyperaceae
Carex raynoldsii / Raynold's sedge / Cyperaceae
Carex rossii / Ross' sedge / Cyperaceae
Carex scirpoidea / Single spike sedge / Cyperaceae
Carex scopulorum / Rocky Mtn. sedge / Cyperaceae
Carex sheldonii / Sheldon's sedge / Cyperaceae
Carex simulata / Shortbeaked sedge / Cyperaceae
Carex stipata / Sawbeak sedge / Cyperaceae
Carex subnigricans / Dark alpine sedge / Cyperaceae
Carex utriculata / Beaked sedge / Cyperaceae
Carex vallicola / Valley sedge / Cyperaceae
Carex vesicaria / Inflated sedge / Cyperaceae
Castilleja applegatei / Wavy-leaved paintbrush / Scrophulariaceae
Castilleja chromosa / Desert paintbrush / Scrophulariaceae
Castilleja exilis / Alkali paintbrush / Scrophulariaceae
Castilleja linariaefolia / Narrow-leaved paintbrush / Scrophulariaceae
Castilleja miniata / Scarlet paintbrush / Scrophulariaceae
Castilleja peckiana / Peck's paintbrush / Scrophulariaceae
Castilleja pilosa / Hairy paintbrush / Scrophulariaceae
Castilleja viscidula / Sticky paintbrush / Scrophulariaceae
Caulanthus major / Nevada jewellflower / Brassicaceae
Caulanthus pilosus / Hairy wild cabbage / Brassicaceae
Ceanothus velutinus / Snowbrush / Rhamnaceae
Centaurea diffusa* / Diffuse knapweed / Asteraceae
Centaurea maculosa* / Spotted knapweed / Asteraceae
Centaurea solstitialis* / Yellow starthistle / Asteraceae
Centaurium exaultum* / Western centaury / Gentianaceae
Cerastium arvense / Field chickweed / Caryophyllaceae
Cerastium berringianum / Alpine chickweed / Caryophyllaceae
Cerastium vulgatum* / Mouse-ear chickweed / Caryophyllaceae
Ceratophyllum demersum / Hornwort / Ceratophyllaceae
Cercocarpus ledifolius / Curl-leaf mountain-mohogany / Rosaceae
Chaenactis douglasii / Dusty maidens / Asteraceae
Chaenactis macrantha / Mohave pincushion / Asteraceae
Chaenactis stevioides / Desert pincushion / Asteraceae
Chaenactis xantiana / Desert chaenactis / Asteraceae
Chaetadelpha wheeleri / Chaetadelpha / Asteraceae
Chenopodium album* / Pigweed / Chenopodiaceae
Chenopodium botrys* / Jerusalem oak / Chenopodiaceae
Chenopodium chenopodioides / Red goosefoot / Chenopodiaceae
Chenopodium desiccatum / Dry goosefoot / Chenopodiaceae
Chenopodium foliosum / Leafy goosefoot / Chenopodiaceae
Chenopodium fremontii / Fremont's goosefoot / Chenopodiaceae
Chenopodium leptophyllum / Slim-leaf goosefoot / Chenopodiaceae
Chenopodium rubrum* / Red goosefoot / Chenopodiaceae
Chenopodium simplex / Large-seeded goosefoot / Chenopodiaceae
Chorispora tenella* / Blue mustard / Brassicaceae
Chorizanthe watsonii / Watson's spine-flower / Polygonaceae
Chrysothamnus humilis / Truckee green rabbitbrush / Asteraceae
Chrysothamnus nauseosus / Gray rabbit-brush / Asteraceae
Chrysothamnus viscidiflorus / Green rabbit-brush / Asteraceae
Cichorium intybus* / Chicory / Asteraceae
Cicuta maculata / Western water hemlock / Apiaceae
Cinna latifolia / Reedgrass / Poaceae
Circaea alpina / Enchanter's nightshade / Onagraceae
Cirsium arvense* / Canada thistle / Asteraceae
Cirsium douglasii / Douglas' thistle / Asteraceae
Cirsium peckii / Steens Mt. thistle / Asteraceae
Cirsium subniveum / Utah thistle / Asteraceae
Cirsium vulgare* / Bull thistle / Asteraceae
Clarkia lassenensis / Mt.Lassen clarkia / Onagraceae
Clarkia pulchella / Ragged Robin / Onagraceae
Clarkia rhomboidea / Common clarkia / Onagraceae
Claytonia lanceolata / Western spring beauty / Portulacaceae
Claytonia megarhiza / Alpine springbeauty / Portulacaceae
Claytonia nevadensis / Sierran spring beauty / Portulacaceae
Claytonia rubra / Red miner's lettuce / Portulacaceae
Claytonia umbellata / Great Basin claytonia / Portulacaceae
Clematis ligusticifolia / Virgin's bower / Ranunculaceae
Cleome lutea / Yellow bee-plant / Capparidaceae
Cleome platycarpa / Golden bee plant / Capparidaceae
Cleomella plocasperma / Cleomella / Capparidaceae
Collinsia parviflora / Small-flowered blue-eyed Mary / Scrophulariaceae
Collomia grandiflora / Large-flowered collomia / Polemoniaceae
Collomia linearis / Narrow-leaf collomia / Polemoniaceae
Collomia tinctoria / Yellow-staining collomia / Polemoniaceae
Comandra umbellata / Bastard toad-flax / Santalaceae
Conringia orientalis* / Hare's ear / Brassicaceae
Convolvulus arvensis* / Field morning-glory / Convolvulaceae
Conyza canadensis* / Horseweed / Asteraceae
Corallorrhiza maculata / Spotted coral-root / Orchidaceae
Cordylanthus capitatus / Yakima birdbeak / Scrophulariaceae
Cordylanthus maritimus / Alkali birdbeak / Scrophulariaceae
Cordylanthus ramosus / Much-branched birdbeak / Scrophulariaceae
Corispermum hyssopifolium / Bugseed / Chenopodiaceae
Cornus stolonifera / Red-osier dogwood / Cornaceae
Crepis acuminata / Tapertip hawksbeard / Asteraceae
Crepis atrabarba / Slender hawksbeard / Asteraceae