Pacific Biodiversity Institute - Endangered Species Information Network

                    Species List by Group - Plants
Lilium occidentale
Photo by Brother Alfred Brousseau

When informational pages on plants of interest exist through other organizations we provide links directly to them.  The organization’s name is listed in the right hand column.  We encourage people to check out their websites as they provide much interesting information on species of concern to their state. Those with especially good websites are:

Washington Natural Heritage Program
Idaho Conservation Data Center
Montana Natural Heritage Program

Note: We have only included the Extinct, Extripated, and Global and State Priority 1 plants for the State of Idaho.  These are all grouped as "Listed" in the table below.  For more information go to The Idaho Conservation Data Center.

Scientific Name
Common Name
Federal Listing
Washington State Listing
Oregon State Listing
Idaho State Listing
External Link 
Abronia umbellata ssp. acutalata Rose-purple sand verbena Species of Concern  Possibly Extinct or Extripated      
Abronia umbellata ssp. breviflora Pink sand verbena Species of Concern    Endangered   CalFlora
Allium dictuon Blue Mtn. onion Candidate  Threatened     Washington Natural Heritage Program
Amsinckia carinata Malheur Valley fiddleneck Candidate    Threatened    
Andromeda polifolia Bog-rosemary       Listed  
Angelica kingii Great basin angelica       Listed CalFlora 
Arenaria paludicola Swamp (=Marsh) sandwort Endangered Possibly Extinct or Extripated      
Artemisa campestris ssp. borealis var purshii Northern sagewort       Listed CalFlora
Artemisia campestris ssp. borealis var. wormskioldii Northern wormwood Candidate  Endangered Endangered   Washington Natural Heritage Program
Asplenium trichomanes Maidenhair spleenwort       Listed  
Asplenium viride Green spleenwort       Listed  
Aster borealis Rush aster   Threatened      
Aster curtus White-topped aster Species of Concern  Sensitive  Threatened   Washington Natural Heritage Program
Aster jessicae Jessica's aster Candidate  Endangered   Washington Natural Heritage Program
Aster vialis Wayside aster     Threatened    
Astragalus applegatei Applegate's milk-vetch Endangered   Endangered    
Astragalus australis var. olympicus Cotton's milk-vetch Species of Concern Threatened      
Astragalus bourgovii Bourgeau's milk-vetch       Listed  
Astragalus collinus var. laurentii Lawrence milk-vetch Candidate    Threatened    
Astragalus columbianus Columbia milk-vetch Candidate  Threatened     Washington Natural Heritage Program
Astragalus cusickii var packardiae Packard’s milk-vetch       Listed  
Astragalus diaphanus var. diurnus Transparent milk-vetch Candidate  Possibly Extinct or Extripated Threatened    
Astragalus kentrophyta var. douglasii Thistle milk-vetch Species of Concern Possibly Extinct or Extripated    
Astragalus microcystis Least bladery milk-vetch    Sensitive   Listed Washington Natural Heritage Program
Astragalus mulfordiae Mulford's milk-vetch Candidate    Endangered  
Astragalus newberryi var. castoreus Newberry's milk-vetch       Listed  
Astragalus peckii Peck's milk-vetch Proposed Endangered   Threatened    
Astragalus pulsiferae var. suksdorfii Ames' milk-vetch Candidate  Endangered     Washington Natural Heritage Program
Astragalus riparius Piper's milk-vetch    Sensitive   Listed  
Astragalus sinuatus Whited's milk-vetch Candidate  Endangered     Washington Natural Heritage Program
Astragalus sterilis Sterile milk-vetch Candidate    Threatened  
Astragalus tetrapterus Four-wing milk-vetch Candidate      Listed  
Astragalus tyghensis Tygh Valley milk-vetch Candidate    Threatened    
Astragalus vexilliflexus var. vexilliflexus Bent-flowered milk-vetch       Listed  
Blepharidachne kingii King's desert grass       Listed CalFlora
Botrychium lineare      Sensitive   Listed  
Botrychium pumicolsa Pumice grape-fern Candidate   Threatened    
Calochortus coxii Crinite mariposa-lily     Endangered    
Calochortus howellii Howell's mariposa-lily     Threatened    
Calochortus indecorus Sexton Mountain mariposa-lily     Endangered    
Calochortus nitidus Broad-fruit mariposa Candidate  Threatened   Washington Natural Heritage Program
Calochortus umpquaensis Umpqua mariposa-lily Removed from Candidate   Endangered    
Camissionia pygmaea Dwarf evening-primrose   Threatened      
Carex aboriginum Indian valley sedge       Listed  
Carex comosa Bristly sedge    Sensitive   Listed CalFlora
Carex lacustris         Listed  
Carex occidentalis Western sedge       Listed CalFlora
Castilleja christii Christ's Indian paintbrush Candidate      Listed Idaho Conservation Data Center
Castilleja levisecta Golden paintbrush Threatened Endangered Endangered   Washington Natural Heritage Program
Ceanothus prostratus Mahala-mat ceanothus       Listed CalFlora
Chrysosplenium tetrandrum Northern golden-carpet   Sensitive   Listed  
Chrysothamnus parryi ssp. montanus Centennial rabbitbrush Candidate      Listed Idaho Conservation Data Center
Cimicifuga elata Tall bugbane Species of Concern Threatened      
Claytonia lanceolata multiscapa Yellow spring-beauty       Listed  
Cleomella plocasperma Alkali cleomella       Listed CalFlora
Cordylanthus maritimus ssp. palustris Saltmarsh bird's-beak Species of Concern   Endangered   CalFlora
Cornus nuttallii Pacific dogwood       Listed CalFlora
Corydalis aquae-gelidae Clackamas corydalis Species of Concern Threatened      
Cuscuta denticulata Sepal-tooth dodder       Listed CalFlora
Cusickiella douglasii Douglas' draba   Threatened     CalFlora
Cypripedium fasciculatum Clustered lady's-slipper Candidate  Threatened   Montana Natural Heritage Program
Cypripedium parviflorum var. pubescens Small yellow lady's-slipper       Listed  
Cypripedium parviflorum Yellow lady's-slipper   Endangered     Montana Natural Heritage Program 
Delphinium leucophaeum Pale larkspur Species of Concern Endangered Endangered   Washington Natural Heritage Program
Delphinium pavonaceum Peacock larkspur Candidate    Endangered    
Delphinium viridescens Wenatchee larkspur Species of Concern Threatened      
Dodecatheon austrofrigidum Frigid shootingstar Species of Concern Threatened      
Drosera intermedia Spoon-leaved sundew       Listed  
Eatonella nivea White eatonella   Threatened   Washington Natural Heritage Program
Erigeron basalticus Basalt daisy Candidate  Threatened      
Erigeron decumbens var. decumbens Willamette daisy Proposed Endangered   Endangered    
Erigeron howellii Howell's daisy Species of Concern Threatened      
Erigeron oreganus Gorge daisy Species of Concern Threatened      
Eriogonum chrysops Golden buckwheat Candidate    Threatened    
Eriogonum codium Umtanum desert buckwheat Candidate  Endangered     Washington Natural Heritage Program
Eriogonum crosbyae Crosby's buckwheat Candidate    Threatened    
Eriogonum desertorum Desert buckwheat       Listed  
Eriogonum meledonum Guardian buckwheat Candidate      Listed  
Eriophorum viridicarnatum Green keeled cotton-grass   Sensitive    Listed  
Eryngium petiolatum Oregon coyote-thistle   Threatened      
Erythronium elegans Coast Range fawn lily     Threatened    
Filipendula occidentalis Queen-of-the forest Species of Concern Threatened      
Fritillaria gentneri Gentner's fritillary Proposed Endangered   Endangered    
Gratiola heterosepala Boggs Lake hedge-hyssop     Threatened   CalFlora
Hackelia cronquistii Conquist's stickseed Candidate    Threatened  
Hackelia venusta Showy stickseed Candidate  Endangered     University of Washington Center for Urban Horticulture
Haplopappus liatriformis Palouse goldenweed Candidate  Threatened   Washington Natural Heritage Program
Haplopappus radiatus Snake River goldenweed Candidate    Endangered  
Hastingsia bracteosa Large-flowered rush lily     Threatened    
Howellia aquatilis Water howellia Threatened Threatened   Washington Natural Heritage Program
Hymenoxys richardsonii Richarson's bitterweed       Listed  
Ivesia rhypara var. rhypara Grimy ivesia     Endangered    
Juncus kelloggii Kellogg's rush   Threatened     CalFlora
Lathyrus holochlorus Thin-leaved peavine   Threatened      
Lathyrus torreyi Torrey's peavine Species of Concern Threatened     Washington Natural Heritage Program
Lepidium davisii Davis' peppergrass Candidate    Threatened Listed  
Leptodactylon pungens ssp. hazeliae Hazel's prickly phlox Candidate     Listed  
Lesquerella tuplashensis White Bluffs bladderpod Candidate  Endangered     Washington Natural Heritage Program
Lilium occidentale Western lily Endangered   Endangered    
Limnanthes floccosa ssp pumila Dwarf meadowfoam     Threatened    
Limnanthes floccosa ssp. grandiflora Large-flowered wooly meadowfoam Candidate    Endangered    
Liparis loeselii Twayblade   Endangered     Washington Natural Heritage Program
Lobelia dortmanna Water lobelia   Threatened      
Lobelia kalmii Kalm's lobelia   Endangered     Washington Natural Heritage Program
Loeflingia squarrosa var. squarrosa Loeflingia   Threatened     CalFlora
Lomatium bradshawii Bradshaw's desert-parsley Endangered Endangered Endangered    
Lomatium cookii Cook's desert parsley Candidate    Endangered    
Lomatium erythrocarpum Red-fruited lomatium Candidate    Endangered   Center for Plant Conservation
Lomatium greenmanii Greenman's desert parsley Candidate    Threatened    
Lomatium rollinsii Rollins' desert-parsley   Threatened      
Lomatium tuberosum Hoover's desert-parsley Candidate  Threatened     Washington Natural Heritage Program
Lomatogonium rotatum Marsh felwort       Listed  
Ludwigia polycarpa Many-fruit false-loosestrife       Listed  
Luina serpentina Colonial luina Candidate    Threatened    
Lupinus cusickii Cusick's lupine Candidate   Endangered    
Lupinus sabinii Sabin's lupine   Endangered      
Lupinus sulphureus var. kincaidii Kincaid's sulfer lupine Proposed Threatened Endangered Threatened    
Maianthemum dilatatum False lily-of-the-valley       Listed CalFlora
Meconella oregana White meconella Candidate  Threatened     Washington Natural Heritage Program
Mentzelia mollis Smooth mentzelia Candidate    Endangered  
Mentzelia packardiae Packard's mentzelia Candidate    Threatened    
Microseris howellii Howell'smicroseris     Threatened    
Mimulus alsinoides Chickweed monkeyflower       Listed CalFlora
Mimulus ampliatus Spacious monkeyflower       Listed  
Mimulus hymenophyllus Membrane-leaved monkeyflower Candidate      Listed  
Mimulus patulus Stalked-leaved monkey-flower Candidate    Threatened  
Mirabilis macfarlanei MacFarlane's four-o'clock Threatened   Endangered Idaho Conservation Data Center
Navarretia tagetina Marigold navarretia   Threatened     Washington Natural Heritage Program
Nymphaea leibergii Leiberg's water-lily       Listed  
Oenothera wolfii Wolf's evening -primrose Species of Concern   Threatened   CalFlora
Ophioglossum pusillum Adder's tongue   Threatened     Montana Natural Heritage Program 
Orthocarpus bracteosus Rosy owl-clover   Threatened     Washington Natural Heritage Program
Oxalis trillifolia Trillium-leaved wood-sorrel       Listed CalFlora
Oxytropis campestris var. columbiana Columbia crazyweed   Threatened     Montana Natural Heritage Program 
Oxytropis campestris var. wanapum Wanapum crazyweed Species of Concern Endangered     Washington Natural Heritage Program
Papaver kluanense ssp. radicatum Arctic poppy       Listed  
Penstemon barrettiae Barrett's beardtongue Candidate  Threatened      
Penstemon idahoensis Idaho penstemon Candidate      Listed  
Petasites frigidus var. palmatus Sweet coltsfoot       Listed CalFlora
Petrophyton cinerascens Chelan rockmat Candidate  Threatened      
Phacelia argentea Silvery phacelia Species of Concern    Threatened   CalFlora
Phacelia inconspicua Obscure phacelia Candidate      Listed  
Phacelia lenta Sticky phacelia Candidate  Threatened      
Phlox idahonis Clearwater phlox Candidate      Listed  
Phsaria didymocarpa var. lyrata Salmon twin bladderpod       Listed Idaho Conservation Data Center
Plagiobothrys hirtus Rough popcorn flower Proposed Endangered   Endangered     
Plagiobothrys lamprocarpus Shiny-fruited allocarya     Endangered    
Platanthera chorisiana Choris' bog-orchid   Threatened      
Pleuropogon oregonus Oregon semaphoregrass Candidate    Threatened    
Poa laxiflora Loose-flowered bluegrass   Threatened      
Poa unilateralis Ocean-bluff bluegrass   Threatened     CalFlora
Polemonium carneum Great polemonium   Threatened     CalFlora
Polemonium pectinatum Washington polemonium Candidate  Threatened     Washington Natural Heritage Program
Polypodium glycyrrhiza Licorice fern       Listed CalFlora
Primula alcalina Alkali primrose Candidate      Listed Idaho Conservation Data Center
Primula incana Jones' primrose       Listed  
Psathyrotes annua Annual brittlebrush       Listed CalFlora
Psoralea physodes California scurf-pea       Listed  
Ranunculus gelidus Arctic buttercup       Listed  
Ranunculus reconditus Obscure buttercup Candidate  Threatened Endangered   Washington Natural Heritage Program
Ribes sanguineum Red-flowered currant       Listed CalFlora
Rorippa columbiae Persistent sepal (Columbia) yellowcress Candidate  Threatened     CalFlora
Rubus nigerrimus Northwest raspberry Candidate  Endangered     Washington Natural Heritage Program
Rubus spectabiis Salmonberry       Listed CalFlora
Salix sessilifolia Soft-leaved willow   Threatened     CalFlora
Scirpus hudsonianus Hudson's bay bulrush       Listed  
Senecio ertterae Ertter's senecio Candidate    Threatened    
Sidalcea hirtipes Hairy-stemmed checker-mallow   Endangered     Washington Natural Heritage Program
Sidalcea nelsoniana Nelson's checker-mallow Threatened Endangered Threatened   Washington Natural Heritage Program
Sidalcea oregana var calva Oregon checker-mallow Proposed Endangered Endangered     Montana Natural Heritage Program 
Silene douglasii var. oraria Cascade Head catchfly     Threatened    
Silene seelyi Seely's silence Candidate  Threatened      
Silene spaldingii Spalding's silene Candidate  Threatened Endangered Washington Natural Heritage Program
Silene uralensis ssp. montana Petalless campion       Listed  
Sisyrinchium sarmentosum Pale blue-eyed grass Species of Concern Threatened      
Spiranthes diluvialis Ute ladies'-tresses Threatened       Montana Natural Heritage Program 
Sporobolus asper Tall dropseed       Listed  
Stanleya confertiliflora Biennial princesplume       Listed  
Stephanomeria malheurensis Malheur wire-lettuce Endangered   Endangered    
Sullivantia oregana Oregon sullivantia Species of Concern Threatened      
Tauschia hooveri Hoover's tauschia Candidate  Threatened      
Teucrium canadense var. occidentale American wood sage       Listed  
Thelypodium eucosmum Arrow-leaf thelypody Candidate    Threatened    
Thelypodium howellii ssp. spectabilis Howell's thelypody Threatened   Endangered    
Thelypteris nevadensis Sierra wood-fern       Listed CalFlora
Triantha occidentalis ssp. brevistyla Short-style tofieldia       Listed  
Trifolium owyheense Owyhee clover Candidate    Endangered  
Trifolium thompsonii Thompson's clover Candidate  Threatened      
Viburnum opullus var. americanum High-bush cranberry       Listed  
Sources

 
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