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Washington Natural Heritage Information System
List of Known Occurrences of Rare Plants in Washington
August 2012

Asotin County

A key to status fields appears below. If a scientific name is underlined you may click on it to go to a field guide page (pdf format, average size 300 kb) for that taxon.


Scientific Name
Common Name
State Status
Federal Status
Historic Record
Arabis crucisetosa cross-haired rockcress T
Asclepias cryptoceras ssp. davisii Davis' milkweed T
Astragalus arthurii Arthur's milk-vetch S
Astragalus cusickii var. cusickii Cusick's milk-vetch S
Bolandra oregana bolandra S
Calochortus macrocarpus var. maculosus sagebrush mariposa-lily E
Calochortus nitidus broad-fruit mariposa E SC
Castilleja applegatei wavey-leaved paintbrush R1
Cheilanthes feei Fee's lip-fern T
Corispermum pacificum common bugseed R2
Crepis bakeri ssp. idahoensis Idaho hawksbeard R1
Cryptantha rostellata beaked cryptantha T
Erigeron davisii Davis' Fleabane S
Erigeron disparipilus Snake River daisy R1 H
Hackelia hispida var. hispida rough stickseed T
Heuchera grossulariifolia var. grossulariifolia gooseberry-leaved alumroot R1
Lipocarpha aristulata awned halfchaff sedge T H
Lomatium rollinsii Rollins' desert-parsley T
Lomatium serpentinum Snake Canyon desert-parsley S
Lupinus lepidus var. cusickii prairie lupine R2 SC H
Lupinus sabinianus Sabin's lupine E H
Lupinus sericeus var. asotinensis Asotin silky lupine R1
Mimulus cusickii Cusick monkeyflower T
Mimulus patulus stalk-leaved monkeyflower T
Oenothera cespitosa ssp. marginata tufted evening-primrose T
Petrophyton caespitosum var. caespitosum Rocky Mountain rockmat T
Pyrrocoma liatriformis Palouse goldenweed E SC
Pyrrocoma scaberula Palouse goldenweed S
Ribes cereum var. colubrinum squaw currant E
Ribes oxyacanthoides ssp. irriguum Idaho gooseberry T
Rubus nigerrimus northwest raspberry T SC
Salix monochroma one-color willow R1
Senecio crassulus thick-leaved groundsel R1 H
Silene spaldingii Spalding's silene T LT
Spartina pectinata prairie cordgrass S

Description of Codes
Historic Record:
H indicates most recent sighting in the county is before 1977.
State Status
State Status of plant species is determined by the Washington Natural Heritage Program. Factors considered include abundance, occurrence patterns, vulnerability, threats, existing protection, and taxonomic distinctness.
Values include:
E = Endangered. In danger of becoming extinct or extirpated from Washington.
T = Threatened. Likely to become Endangered in Washington.
S = Sensitive. Vulnerable or declining and could become Endangered or Threatened in the state.
X = Possibly extinct or Extirpated from Washington.
R1 = Review group 1. Of potential concern but needs more field work to assign another rank.
R2 = Review group 2. Of potential concern but with unresolved taxonomic questions.
Federal Status
Federal Status under the U.S. Endangered Species Act(USESA) as published in the Federal Register:
LE = Listed Endangered. In danger of extinction.
LT = Listed Threatened. Likely to become endangered.
PE = Proposed Endangered.
PT = Proposed Threatened.
C = Candidate species. Sufficient information exists to support listing as Endangered or Threatened.
SC = Species of Concern. An unofficial status, the species appears to be in jeopardy, but insufficient information to support listing.


Washington Natural Heritage Program - www.dnr.wa.gov/ResearchScience/Topics/NaturalHeritage/Pages/amp_nh.aspx/
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Washington Dept. of Natural Resources, PO Box 47016, Olympia, WA 98504-7016