Pacific Biodiversity Institute - Endangered Species Information Network

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.

Idaho uses a number of different types of categories for their rare plants.  The below list includes those considered by the Idaho Native Plant Society as being of global and state highest priority, and those plants that are extinct or extripated.  For more information go to The Idaho Conservation Data Center.


Scientific Name
Common Name
Federal Listing
External Link 
Andromeda polifolia Bog-rosemary    
Angelica kingii Great basin angelica   CalFlora 
Artemisa campestris ssp. borealis var purshii Northern sagewort   CalFlora
Asplenium trichomanes Maidenhair spleenwort    
Asplenium viride Green spleenwort    
Astragalus bourgovii Bourgeau's milk-vetch    
Astragalus cusickii var packardiae Packard’s milk-vetch    
Astragalus microcystis Least bladery milk-vetch   Washington Natural Heritage Program
Astragalus newberryi var. castoreus Newberry's milk-vetch    
Astragalus riparius Piper's milk-vetch    
Astragalus tetrapterus Four-wing milk-vetch Candidate   
Astragalus vexilliflexus var. vexilliflexus Bent-flowered milk-vetch    
Blepharidachne kingii King's desert grass   CalFlora
Botrychium lineare      
Carex aboriginum Indian valley sedge    
Carex comosa Bristly sedge   CalFlora
Carex lacustris      
Carex occidentalis Western sedge   CalFlora
Castilleja christii Christ's Indian paintbrush Candidate  Idaho Conservation Data Center
Ceanothus prostratus Mahala-mat ceanothus   CalFlora
Chrysosplenium tetrandrum Northern golden-carpet    
Chrysothamnus parryi ssp. montanus Centennial rabbitbrush Candidate  Idaho Conservation Data Center
Claytonia lanceolata multiscapa Yellow spring-beauty    
Cleomella plocasperma Alkali cleomella   CalFlora
Cornus nuttallii Pacific dogwood   CalFlora
Cuscuta denticulata Sepal-tooth dodder   CalFlora
Cypripedium parviflorum var. pubescens Small yellow lady's-slipper    
Drosera intermedia Spoon-leaved sundew    
Eriogonum desertorum Desert buckwheat    
Eriogonum meledonum Guardian buckwheat Candidate   
Eriophorum viridicarnatum Green keeled cotton-grass    
Hymenoxys richardsonii Richarson's bitterweed    
Lepidium davisii Davis' peppergrass Candidate   
Leptodactylon pungens ssp. hazeliae Hazel's prickly phlox Candidate  
Lomatogonium rotatum Marsh felwort    
Ludwigia polycarpa Many-fruit false-loosestrife    
Maianthemum dilatatum False lily-of-the-valley   CalFlora
Mimulus alsinoides Chickweed monkeyflower   CalFlora
Mimulus ampliatus Spacious monkeyflower    
Mimulus hymenophyllus Membrane-leaved monkeyflower Candidate   
Nymphaea leibergii Leiberg's water-lily    
Oxalis trillifolia Trillium-leaved wood-sorrel   CalFlora
Papaver kluanense ssp. radicatum Arctic poppy    
Penstemon idahoensis Idaho penstemon Candidate   
Petasites frigidus var. palmatus Sweet coltsfoot   CalFlora
Phacelia inconspicua Obscure phacelia Candidate   
Phlox idahonis Clearwater phlox Candidate   
Phsaria didymocarpa var. lyrata Salmon twin bladderpod   Idaho Conservation Data Center
Polypodium glycyrrhiza Licorice fern   CalFlora
Primula alcalina Alkali primrose Candidate  Idaho Conservation Data Center
Primula incana Jones' primrose    
Psathyrotes annua Annual brittlebrush   CalFlora
Psoralea physodes California scurf-pea    
Ranunculus gelidus Arctic buttercup    
Ribes sanguineum Red-flowered currant   CalFlora
Rubus spectabiis Salmonberry   CalFlora
Scirpus hudsonianus Hudson's bay bulrush    
Silene uralensis ssp. montana Petalless campion    
Sporobolus asper Tall dropseed    
Stanleya confertiliflora Biennial princesplume    
Teucrium canadense var. occidentale American wood sage    
Thelypteris nevadensis Sierra wood-fern   CalFlora
Triantha occidentalis ssp. brevistyla Short-style tofieldia    
Viburnum opullus var. americanum High-bush cranberry    
Sources
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