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Washington Natural Heritage Information System
List of Known Occurrences of Rare Plants in Washington
February 2009

Yakima 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
Agoseris elata tall agoseris S
Allium campanulatum Sierra onion T
Anthoxanthum hirtum common northern sweet grass R1 H
Astragalus columbianus Columbia milk-vetch S SC
Astragalus misellus var. pauper Pauper milk-vetch S
Calochortus longebarbatus var. longebarbatus long-bearded sego lily S SC
Camissonia minor small-flower evening-primrose S H
Camissonia pygmaea dwarf evening-primrose S
Carex densa dense sedge T H
Carex heteroneura var. epapillosa smooth-fruit sedge S H
Carex macrochaeta large-awn sedge T H
Castilleja cryptantha obscure Indian-paintbrush S SC
Collomia macrocalyx bristle-flowered collomia S
Cryptantha gracilis narrow-stem cryptantha S
Cryptantha leucophaea gray cryptantha S SC
Cryptantha rostellata beaked cryptantha T H
Cryptantha scoparia miner's candle S H
Cryptantha spiculifera Snake River cryptantha S
Cypripedium fasciculatum clustered lady's-slipper S SC
Eleocharis rostellata beaked spike-rush S
Erigeron basalticus basalt daisy T SC
Erigeron piperianus Piper's daisy S
Hackelia diffusa var. diffusa diffuse stickseed T
Heterotheca oregona var. oregona Oregon goldenaster T
Juncus hemiendytus var. hemiendytus dwarf rush T
Lobelia kalmii Kalm's lobelia E
Lomatium tuberosum Hoover's desert-parsley S SC
Luzula arcuata ssp. unalaschkensis curved woodrush S
Mimulus pulsiferae Pulsifer's monkey-flower S H
Mimulus suksdorfii Suksdorf's monkey-flower S
Nicotiana attenuata coyote tobacco S
Oenothera caespitosa ssp. caespitosa cespitose evening-primrose S H
Oenothera flava ssp. flava long-tubed evening-primrose X H
Orthocarpus bracteosus rosy owl-clover E
Pedicularis rainierensis Mt. Rainier lousewort S H
Pediocactus nigrispinus snowball cactus R1
Platanthera sparsiflora canyon bog-orchid T
Potentilla breweri Brewer's cinquefoil T H
Sisyrinchium sarmentosum pale blue-eyed grass T SC
Tauschia hooveri Hoover's tauschia T SC
Thelypodium howellii ssp. howellii Howell's thelypody R1 H
Trichostema oblongum oblong bluecurls R1
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 47014, Olympia, WA 98504-7014