| Family |
Taxon |
Common Names |
| Apiaceae |
Lomatium brandegeei (Coult. & Rose) J.F. Macbr. |
Brandegee's desert-parsley |
| Apiaceae |
Tauschia hooveri Mathias & Constance |
Hoover's umbrella-wort, Hoover's tauschia |
| 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 venusta (Piper) St. John |
showy stickseed, lesser showy stickseed |
| Brassicaceae |
Halimolobos whitedii (Piper) Rollins |
whited's halimolobos or fissurewort |
| Brassicaceae |
Lesquerella tuplashensis Rollins, K.A. Beck & F.E. Caplow |
white bluffs bladderpod |
| Brassicaceae |
Physaria alpestris Suksd. |
alpine or Washington twinpod |
| Chenopodiaceae |
Corispermum pallidum Mosyakin |
pale bugseed |
| Liliaceae |
Allium constrictum (Ownbey & Mingrone) P. M. Peterson, Annable & Rieseberg |
Grand Coulee onion |
| Liliaceae |
Allium scilloides Douglas ex S. Watson |
scilla-like onion, fragile onion |
| Liliaceae |
Calochortus lyallii Baker |
Lyall's mariposa-lily |
| Liliaceae |
Camassia quamash (Pursh) Greene ssp. azurea (A. Heller) Gould |
prairie camas, blue camas |
| Orchidaceae |
Corallorhiza maculata (Raf.) Raf. var. ozettensis E. Tisch |
ozette coralroot |
| Orobanchaceae |
Castilleja cryptantha Pennell & G.N. Jones |
obscure paintbrush |
| 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 |
| Scrophulariaceae |
Penstemon eriantherus Pursh var. whitedii (Piper) A. Nels. |
fuzzy-tongue penstemon |
| Scrophulariaceae |
Penstemon glandulosus Dougl. var. chelanensis (Keck) Cronq. |
sticky-stem penstemon |
| Scrophulariaceae |
Penstemon washingtonensis Keck |
Washington beardtongue |
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