Washington Flora Checklist
A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium

 

Checklist » Washington Endemics
Washington Endemics
The following 49 taxa are endemic to Washington State (please note: This list is currently incomplete).
Family Taxon Common Names
Amaranthaceae Corispermum pallidum Mosyakin pale bugseed
Amaryllidaceae Allium constrictum (Ownbey & Mingrone) P. M. Peterson, Annable & Rieseberg Grand Coulee onion
Amaryllidaceae Allium scilloides Douglas ex S. Watson scilla-like onion, fragile onion
Apiaceae Lomatium brandegeei (Coult. & Rose) J.F. Macbr. Brandegee's desert-parsley
Apiaceae Lomatium knokei Darrach & Hinchliff
Apiaceae Tauschia hooveri Mathias & Constance Hoover's umbrella-wort, Hoover's tauschia
Asparagaceae Camassia quamash (Pursh) Greene ssp. azurea (A. Heller) Gould prairie camas, blue camas
Asteraceae Chaenactis thompsonii Cronquist Thompson's pincushion
Asteraceae Crepis modocensis Greene ssp. glareosa (Piper) Babc. & Stebbins
Asteraceae Erigeron basalticus Hoover basalt fleabane
Asteraceae Erigeron flettii G.N. Jones Olympic Mt. fleabane, Flett's fleabane
Asteraceae Erigeron peregrinus (Banks ex Pursh) Greene, var. thompsonii (S. F. Blake ex J. W. Thompson) Cronquist
Asteraceae Erigeron piperianus Cronquist Piper's fleabane
Asteraceae Erigeron poliospermus A. Gray var. cereus Cronquist Kittitas fleabane
Asteraceae Eucephalus glaucescens (A. Gray) Greene Klickitat aster
Asteraceae Rudbeckia alpicola Piper Washington, Wenatchee Mountain, or showy coneflower
Boraginaceae Cryptantha thompsonii I.M. Johnston Thompson's cryptantha, Thompson's cat's eye
Boraginaceae Hackelia diffusa (Lehm.) I.M. Johnston var. arida (Piper) R.L. Carr steppe stickseed, sagebrush stickseed
Boraginaceae Hackelia hispida (A. Gray) I.M. Johnston var. disjuncta R.L. Carr sagebrush stickseed
Boraginaceae Hackelia taylorii Harrod, Malmquist & R.L. Carr Taylor's stickseed
Boraginaceae Hackelia venusta (Piper) St. John showy stickseed, lesser showy stickseed
Brassicaceae Arabis olympica Piper Olympics rockcress
Brassicaceae Physaria alpestris Suksd. alpine or Washington twinpod
Brassicaceae Physaria douglasii (S. Watson) O'Kane & Al-Shehbaz ssp. tuplashensis (Rollins, K.A. Beck & Caplow) O'Kane & Al-Shehbaz White Bluffs bladderpod
Brassicaceae Sandbergia whitedii (Piper) Greene
Fabaceae Astragalus australis (L.) Lam. var. cottonii (M.E. Jones) S.L. Welsh Cotton's milkvetch
Fabaceae Astragalus columbianus Barneby Columbian milk-vetch
Fabaceae Astragalus lyallii Gray Lyall's milk-vetch
Fabaceae Astragalus misellus S. Wats. var. pauper Barneby pauper milk-vetch
Fabaceae Oxytropis campestris (L.) DC. var. wanapum E. Joyal wanapum crazyweed
Fabaceae Trifolium thompsonii Morton Thompson's clover
Hydrophyllaceae Phacelia lenta Piper sticky scorpion-weed
Malvaceae Iliamna longisepala (Torr.) Wiggins long-sepal globemallow
Onagraceae Neoholmgrenia hilgardii (Greene) W. L. Wagner & Hoch
Orchidaceae Corallorhiza maculata (Raf.) Raf. var. ozettensis E. Tisch ozette coralroot
Orobanchaceae Castilleja cryptantha Pennell & G.N. Jones obscure paintbrush
Orobanchaceae Castilleja parviflora Bong. var. olympica (G.N. Jones) M. Ownbey Olympic paintbrush
Orobanchaceae Orthocarpus barbatus Cotton Grand Coulee owl-clover
Plantaginaceae Penstemon eriantherus Pursh var. whitedii (Piper) A. Nels. fuzzy-tongue penstemon
Plantaginaceae Penstemon washingtonensis Keck Washington beardtongue
Polemoniaceae Navarretia leucocephala Benth. ssp. diffusa Bjork diffuse navarretia
Polygonaceae Eriogonum codium Reveal, Caplow & K.A. Beck Umptanum buckwheat, basalt desert buckwheat
Polygonaceae Eriogonum compositum Dougl. ex Benth. var. lancifolium St. John & Warren northern buckwheat
Polygonaceae Eriogonum umbellatum Torr. var. hypoleium (Piper) C.L. Hitchc. sulfur flower
Ranunculaceae Clematis occidentalis (Hornem.) DC. var. dissecta (C.L. Hitchc.) J. Pringle Columbia clematis
Ranunculaceae Delphinium multiplex (Ewan) C.L. Hitchc. Kittitas larkspur
Ranunculaceae Delphinium viridescens Leib. Wenatchee larkspur
Ranunculaceae Delphinium xantholeucum Piper yellow-white larkspur
Valerianaceae Valeriana columbiana Piper Wenatchee valerian


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