Checklist » Washington Endemics
Taxa Endemic to Washington

The following 86 taxa are believed to be endemic to Washington. Names are sorted by family, then scientific names.

Ferns and Lycophytes:
Family
Taxon (native taxa in boldface)
Common Names
(none)
Gymnosperms:
Family
Taxon (native taxa in boldface)
Common Names
(none)
Dicots:
Family
Taxon (native taxa in boldface)
Common Names
Amaranthaceae
Corispermum pallidum Mosyakin[FNA4, HC2]
pale bugseed
Apiaceae
Lomatium cuspidatum Mathias & Constance[HC, HC2]
Wenatchee biscuit-root, Wenatchee desert-parsley, Wenatchee Mountain lomatium
Apiaceae
Lomatium knokei Darrach[HC2]
Knoke's biscuit-root, Knoke's desert-parsley, Knoke's lomatium
Apiaceae
Lomatium lithosolamans J.F. Sm. & M.A. Feist[HC2]
Hoover's biscuit-root, Hoover's desert-parsley, Hoover's lomatium
Apiaceae
Lomatium quintuplex Schlessman & Constance[HC2]
Umptanum biscuit-root, Umptanum desert-parsley
Apiaceae
Lomatium refugianum Darrach & Brill
refuge biscuitroot
Apiaceae
Lomatium roneorum M.E. Darrach
Rone's biscuit-root, Rone's desert-parsley
Apiaceae
Lomatium tamanitchii Darrach & Thie[HC2]
ribseed biscuit-root, ribseed desert-parsley
Apiaceae
Lomatium thompsonii (Mathias) Cronquist[HC, HC2]
Thompson's biscuit-root, Thompson's desert-parsley
Apiaceae
Lomatium tuberosum Hoover[HC, HC2]
Hoover's biscuit-root, Hoover's lomatium, potato desert-parsley
Asteraceae
Chaenactis thompsonii Cronquist[FNA21, HC, HC2]
Thompson's pincushion
Asteraceae
Cirsium edule Nutt. var. wenatchense D.J. Keil[FNA19, HC2]
Wenatchee thistle
Asteraceae
Erigeron basalticus Hoover[FNA20, HC, HC2]
basalt fleabane
Asteraceae
Erigeron flettii G.N. Jones[FNA20, HC, HC2]
Flett's fleabane, Olympic Mt. fleabane
Asteraceae
Erigeron peregrinus (Banks ex Pursh) Greene var. thompsonii (S.F. Blake ex J.W. Thomp.) Cronquist[FNA20, HC, HC2]
Thompson's wandering fleabane
Asteraceae
Erigeron piperianus Cronquist[FNA20, HC, HC2]
Piper's fleabane
Asteraceae
Erigeron poliospermus A. Gray var. cereus Cronquist[FNA20, HC, HC2]
Kittitas fleabane
Asteraceae
Eucephalus glaucescens (A. Gray) Greene[FNA20, HC2]
Klickitat aster
Asteraceae
Rudbeckia alpicola Piper[FNA21, HC2]
showy black-eyed Susan, Washington showy black-eyed Susan, Wenatchee Mountain showy black-eyed Susan
Asteraceae
Senecio neowebsteri S.F. Blake[FNA20, HC, HC2]
Olympic Mountain ragwort
Asteraceae
Symphyotrichum ×columbianum (Piper) G.L. Nesom[FNA20, HC2]
hybrid aster
Boraginaceae
Hackelia diffusa (Lehm.) I.M. Johnst. var. arida (Piper) R.L. Carr[HC2]
sagebrush stickseed, steppe stickseed
Boraginaceae
Hackelia hispida (A. Gray) I.M. Johnst. var. disjuncta R.L. Carr[HC2]
sagebrush stickseed
Boraginaceae
Hackelia taylorii Harrod, Malmquist & R.L. Carr[HC2]
Taylor's stickseed
Boraginaceae
Hackelia venusta (Piper) H. St. John[HC, HC2]
lesser showy stickseed
Boraginaceae
Mertensia platyphylla A. Heller[HC, HC2]
broadleaf bluebell
Boraginaceae
Oreocarya leucophaea (Douglas ex Lehm.) Greene
gray oreocarya
Boraginaceae
Oreocarya thompsonii (I.M. Johnst.) Abrams
Thompson's cat's-eye, Thompson's oreocarya
Brassicaceae
Arabis olympica Piper[FNA7, HC2]
Olympics rockcress
Brassicaceae
Physaria alpestris Suksd.[FNA7, HC, HC2]
alpine twinpod, Washington twinpod
Brassicaceae
Physaria douglasii (S. Watson) O’Kane & Al-Shehbaz ssp. tuplashensis (Rollins, K.A. Beck & Caplow) O’Kane & Al-Shehbaz[FNA7, HC2]
White Bluffs bladderpod
Campanulaceae
Campanula piperi Howell[HC, HC2]
Olympic bellflower
Caryophyllaceae
Sabulina basaltica B.S. Legler[HC2]
basalt sandwort, Olympic sandwort
Caryophyllaceae
Sabulina sororia B.S. Legler[HC2]
Twin Sisters sandwort
Caryophyllaceae
Silene seelyi C.V. Morton & J.W. Thomp.[FNA5, HC, HC2]
Seely's silene
Crassulaceae
Sedum rupicola G.N. Jones[FNA8, HC2]
lance-leaved stonecrop
Fabaceae
Astragalus australis (L.) Lam. var. cottonii (M.E. Jones) S.L. Welsh[Draft FNA, HC2]
Cotton's milk-vetch, Cotton's milkvetch
Fabaceae
Astragalus columbianus Barneby[HC, HC2]
Columbian milk-vetch
Fabaceae
Astragalus kentrophyta A. Gray var. douglasii Barneby[HC, HC2]
spiny millk-vetch, thistle milk-vetch
Fabaceae
Astragalus leibergii M.E. Jones[HC, HC2]
Leiberg's milk-vetch
Fabaceae
Astragalus lyallii A. Gray[HC, HC2]
Lyall's milk-vetch
Fabaceae
Astragalus misellus S. Watson var. pauper Barneby[HC, HC2]
pauper milk-vetch
Fabaceae
Astragalus sinuatus Piper[HC, HC2]
Whited's milk-vetch
Fabaceae
Astragalus sinuatus Piper[HC, HC2]
Whited's milk-vetch
Fabaceae
Astragalus speirocarpus A. Gray[HC, HC2]
curve-pod milk-vetch, medic milk-vetch, spiral-pod milk-vetch
Fabaceae
Astragalus speirocarpus A. Gray[HC, HC2]
curve-pod milk-vetch, medic milk-vetch, spiral-pod milk-vetch
Fabaceae
Lupinus sericeus Pursh var. asotinensis (L.Ll. Phillips) C.L. Hitchc.[HC, HC2]
Asotin silk lupine
Fabaceae
Oxytropis campestris (L.) DC. var. wanapum Joyal[HC2]
Wanapum crazyweed, Wanapum locoweed
Fabaceae
Trifolium longipes Nutt. var. longipes[HC, HC2]
long-stalked clover
Fabaceae
Trifolium thompsonii C.V. Morton[HC, HC2]
Thompson's clover
Hydrophyllaceae
Phacelia lenta Piper[HC2]
sticky scorpion-weed
Malvaceae
Iliamna longisepala (Torr.) Wiggins[HC, HC2]
long-sepal globemallow
Malvaceae
Sidalcea oregana (Nutt. ex Torr. & A. Gray) A. Gray var. calva C.L. Hitchc.[HC, HC2]
Oregon checkermallow
Onagraceae
Neoholmgrenia hilgardii (Greene) W.L. Wagner & Hoch[HC2, JPM2]
Hilgard's suncup
Orobanchaceae
Castilleja cryptantha Pennell & G.N. Jones[HC, HC2]
obscure paintbrush
Orobanchaceae
Castilleja parviflora Bong. var. olympica (G.N. Jones) Ownbey[HC, HC2]
Olympic paintbrush
Orobanchaceae
Pedicularis rainierensis Pennell & F.A. Warren[HC, HC2]
Mt. Rainier lousewort
Plantaginaceae
Penstemon eriantherus Pursh var. whitedii (Piper) A. Nelson[HC, HC2]
Whited's fuzzy-tongue penstemon
Plantaginaceae
Penstemon washingtonensis D.D. Keck[HC, HC2]
Washington beardtongue
Plantaginaceae
Veronica dissecta (Rydb.) M.M.Mart.Ort. & Albach ssp. lanuginosa (Piper) M.M.Mart.Ort. & Albach[WTU]
cut-leaf kittentails
Polemoniaceae
Navarretia leucocephala Benth. ssp. diffusa Bjork[HC2]
diffuse navarretia
Polemoniaceae
Phlox solivaga Mayfield & Darrach[HC2]
yeti phlox
Polemoniaceae
Polemonium pectinatum Greene[HC, HC2]
Washington Jacob's-ladder, Washington polemonium
Polygonaceae
Eriogonum codium Reveal, Caplow & K. A. Beck[FNA5, HC2]
basalt desert buckwheat, Umtanum buckwheat
Polygonaceae
Eriogonum compositum Douglas ex Benth. var. lancifolium H. St. John & F.A. Warren[FNA5, HC, HC2]
wild buckwheat
Polygonaceae
Eriogonum umbellatum Torr. var. hypoleium (Piper) C.L. Hitchc.[FNA5, HC, HC2]
Kittitas sulfur flower
Polygonaceae
Rumex salicifolius Weinm. var. angustivalvis Danser[HC, HC2]
western willow dock
Primulaceae
Androsace nivalis (Lindl.) Wendelbo[WTU]
snow douglasia
Ranunculaceae
Clematis occidentalis (Hornem.) DC. var. dissecta (C.L. Hitchc.) J.S. Pringle[FNA3, HC2]
Columbia clematis
Ranunculaceae
Delphinium lineapetalum Ewan[WTU]
line-petaled larkspur
Ranunculaceae
Delphinium multiplex (Ewan) C.L. Hitchc.[FNA3, HC, HC2]
Kittitas larkspur
Ranunculaceae
Delphinium viridescens Leiberg[FNA3, HC, HC2]
Wenatchee larkspur
Ranunculaceae
Delphinium xantholeucum Piper[FNA3, HC, HC2]
yellow-white larkspur
Ranunculaceae
Ranunculus basalticus Giblin
basalt buttercup
Rosaceae
Petrophytum cinerascens (Piper) Rydb.[HC, HC2]
Chelan rockmat
Rosaceae
Petrophytum hendersonii (Canby) Rydb.[HC, HC2]
Olympic Mountain rockmat
Rosaceae
Rubus nigerrimus (Greene) Rydb.[HC, HC2]
dark raspberry, northwest raspberry
Saxifragaceae
Elmera racemosa (S. Watson) Rydb. var. puberulenta C.L. Hitchc.[HC, HC2]
fuzzy elmera
Valerianaceae
Valeriana columbiana Piper[HC, HC2]
Wenatchee valerian
Violaceae
Viola flettii Piper[HC, HC2]
Flett's violet, Olympic violet
Monocots:
Family
Taxon (native taxa in boldface)
Common Names
Amaryllidaceae
Allium constrictum (Ownbey & Mingrone) P. M. Peterson, Annable & Rieseberg[FNA26, HC2]
Grand Coulee onion
Amaryllidaceae
Allium dictuon H. St. John[FNA26, HC, HC2]
Blue Mountain onion
Amaryllidaceae
Allium scilloides Douglas ex S. Watson[FNA26, HC, HC2]
fragile onion, scilla-like onion
Asparagaceae
Camassia quamash (Pursh) Greene ssp. azurea (A. Heller) Gould[FNA26, HC2]
blue camas, prairie camas
Liliaceae
Erythronium quinaultense G.A. Allen[FNA26, HC2]
Olympic fawn-lily, Quinault trout-lily
Orchidaceae
Corallorhiza maculata (Raf.) Raf. var. ozettensis E. Tisch[HC2]
ozette coralroot
Poaceae
Calamagrostis tacomensis K. Marr & Hebda[FNA24, HC2]
Rainier reedgrass
Poaceae
Poa curtifolia Scribn.[FNA24, HC, HC2]
little mountain bluegrass, Wenatchees bluegrass
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