* Indian Ricegrass: Achnatherum hymenoides
* Rip Gut: Bromus diandrus
* Cheatgrass: Bromus tectorum
* Bottlebrush Squirreltail: Elymus elymoides
* Needle-and-thread: Hesperostipa comata
* Bulbous Bluegrass: Poa bulbosa
* Sandberg's Bluegrass: Poa secunda
* Douglas' Cluster Lily: Triteleia grandiflora ssp. grandiflora
* Bicolored Cluster Lily: Triteleia grandiflora ssp. howellii
* Western Blue Flag: Iris missouriensis - Blooming in moist areas at Roosevelt, WA
* Northern Buckwheat: Eriogonum compositum var. compositum
Snow Buckwheat: Eriogonum niveum - In bud.
* Rock Buckwheat: Eriogonum sphaerocephalum
Strict Buckwheat: Eriogonum strictum (var. ?)
* Broom Buckwheat: Eriogonum vimineum
* Veiny Dock: Rumex venosus
* Whitetop: Cardaria draba
* Pale Wallflower: Erysimum occidentale
* Tumble Mustard: Sisymbrium altissimum
* Thick-leaf Thelypody: Thelypodium laciniatum var. laciniatum
* Thick-leaf Thelypody: Thelypodium laciniatum var. streptanthoides
* Antelope Bitterbrush: Purshia tridentata
* Hairy Milkvetch: Astragalus inflexus
* The Dalles Milkvetch: Astragalus sclerocarpus
* Curvepod Milkvetch: Astragalus speirocarpus
* Columbia Milkvetch: Astragalus succumbens
* Tweedy's Milkvetch: Astragalus tweedyi
* Spurred Lupine: Lupinus arbustus
* Hybrid Lupine: Lupinus leucophyllus x sericeus - Beginning to bloom.
* Soft Lupine: Lupinus sulphureus ssp. subsaccatus
* Filaree: Erodium cicutarium
* Whitestem Blazing Star: Mentzelia albicaulis
Blazing Star: Mentzelia laevicaulis var. laevicaulis
* Tufted Evening-primrose: Oenothera caespitosa ssp. marginata
* Pale Evening-primrose: Oenothera pallida
* Pungent Desert Parsley: Lomatium grayi
* Desert Parsley: Lomatium tamanitchii
* Indian-parsnip: Pteryxia terebinthina var. foeniculaceus
* Longleaf Phlox: Phlox longifolia - large swaths of pink covering much of the more naturalized ground.
* Silverleaf Phacelia: Phacelia hastata var. hastata
* Tarweed Fiddleneck: Amsinckia lycopsoides
* Rigid Fiddleneck: Amsinckia retrorsa
* Snake River Cryptantha: Cryptantha spiculifera
* Wingnut Cryptantha: Cryptantha pterocarya ?
* Purple Sage: Salvia dorrii
* Common Monkeyflower: Mimulus guttatus
* Sand Penstemon: Penstemon acuminatus var. acuminatus
* Clustered Broomrape: Aphyllon franciscanum
* Shrubby Bedstraw: Galium multifflorum
* Manroot: Marah oreganus
* Yarrow: Achillea millefolium
Big Sagebrush: Artemisia tridentata (ssp. vaseyana ?)
* Carey's Balsamroot: Balsamorhiza careyana
* Hoary False Yarrow: Chaenactis douglasii - Beginning to bloom.
Wavyleaf Thistle: Cirsium undulatum - In bud.
Gray Rabbitbrush: Ericameria nauseosa var. speciosa
Columbia Goldenweed: Ericameria resinosa
* Threadleaf Fleabane: Erigeron filifolius - Beginning to bloom.
* Cushion Fleabane: Erigeron poliospermus var. poliospermus - Including plants with lavender, white, or canary-yellow rays.
* Shaggy Fleabane: Erigeron pumilus
* Woolly Sunflower: Eriophyllum lanatum var. integrifolium
Match Brush: Gutierrezia sarothrae
* Cusick's Sunflower: Helianthus cusickii