| Abies grandis | 
		Pinaceae | 
		grand fir | 
		western forest; eastern forest; subalpine or alpine | 
		[no flowers] | 
	
	
		| Acer macrophyllum | 
		Sapindaceae | 
		big-leaf maple | 
		western forest; eastern forest | 
		Mar, Apr, May, Jun | 
	
	
		| Agastache occidentalis | 
		Lamiaceae | 
		western giant-hyssop | 
		eastern forest; shrub-steppe | 
		Jun, Jul, Aug | 
	
	
		| Anemone oregana var. oregana | 
		Ranunculaceae | 
		Oregon anemone; western wood anemone | 
		  | 
		Mar, Apr, May, Jun | 
	
	
		| Angelica canbyi | 
		Apiaceae | 
		Canby's angelica | 
		western forest; eastern forest; freshwater | 
		Jun, Jul, Aug, Sep | 
	
	
		| Asarum caudatum | 
		Aristolochiaceae | 
		wild ginger | 
		western forest; eastern forest | 
		Apr, May, Jun, Jul | 
	
	
		| Astragalus leibergii | 
		Fabaceae | 
		Leiberg's milk-vetch | 
		shrub-steppe | 
		Apr, May, Jun | 
	
	
		| Balsamorhiza hookeri | 
		Asteraceae | 
		hairy balsamroot; hare's head balsamroot; Hooker's balsamroot | 
		eastern forest; shrub-steppe | 
		Apr, May, Jun | 
	
	
		| Boechera atrorubens | 
		Brassicaceae | 
		dark-red-flowered rockcress | 
		western forest; eastern forest; shrub-steppe | 
		Apr, May, Jun | 
	
	
		| Botrypus virginianus | 
		Ophioglossaceae | 
		rattlesnake fern; common grapefern; Virginia grapefern | 
		western forest; eastern forest | 
		[no flowers] | 
	
	
		| Camassia quamash | 
		Asparagaceae | 
		common camas | 
		western forest; eastern forest; prairie or bald; shrub-steppe; freshwater | 
		Apr, May, Jun | 
	
	
		| Camassia quamash ssp. quamash | 
		Asparagaceae | 
		common camas | 
		  | 
		Apr, May, Jun | 
	
	
		| Erigeron salishii | 
		Asteraceae | 
		Salish fleabane; star peak fleabane | 
		subalpine or alpine; prairie or bald; shrub-steppe | 
		Jul, Aug, Sep | 
	
	
		| Frangula purshiana | 
		Rhamnaceae | 
		buckthorn; false buckthorn; cascara | 
		western forest; eastern forest | 
		Apr, May, Jun | 
	
	
		| Hackelia venusta | 
		Boraginaceae | 
		lesser showy stickseed; showy stickseed | 
		eastern forest | 
		May, Jun | 
	
	
		| Helianthus annuus | 
		Asteraceae | 
		common sunflower | 
		eastern forest; shrub-steppe; disturbed areas | 
		Jun, Jul, Aug, Sep | 
	
	
		| Hesperochiron pumilus | 
		Hydrophyllaceae | 
		small hesperochiron; small monkey-fiddle | 
		eastern forest; shrub-steppe | 
		Apr, May, Jun | 
	
	
		| Iliamna longisepala | 
		Malvaceae | 
		long-sepal globemallow | 
		eastern forest; shrub-steppe | 
		Jun, Jul, Aug | 
	
	
		| Juncus tenuis | 
		Juncaceae | 
		path rush; poverty rush; slender rush | 
		freshwater; disturbed areas | 
		Jun, Jul, Aug, Sep | 
	
	
		| Lathyrus nevadensis var. nevadensis | 
		Fabaceae | 
		Sierra pea | 
		  | 
		  | 
	
	
		| Leptosiphon liniflorus | 
		Polemoniaceae | 
		flax-flower desert-trumpets; thread-stem linanthus; thread-stemmed linanthus | 
		eastern forest; shrub-steppe | 
		May, Jun | 
	
	
		| Lomatium thompsonii | 
		Apiaceae | 
		Thompson's biscuit-root; Thompson's desert-parsley | 
		eastern forest; shrub-steppe | 
		May, Jun | 
	
	
		| Lonicera ciliosa | 
		Caprifoliaceae | 
		orange honeysuckle | 
		western forest; eastern forest; prairie or bald | 
		May, Jun, Jul | 
	
	
		| Lupinus polyphyllus var. prunophilus | 
		Fabaceae | 
		large-leaved lupine | 
		  | 
		  | 
	
	
		| Lupinus saxosus | 
		Fabaceae | 
		rock lupine | 
		eastern forest; shrub-steppe | 
		Apr, May | 
	
	
		| Nestotus stenophyllus | 
		Asteraceae | 
		narrowleaf goldenweed | 
		shrub-steppe | 
		May, Jun, Jul | 
	
	
		| Oreocarya thompsonii | 
		Boraginaceae | 
		Thompson's oreocarya; Thompson's cat's-eye | 
		eastern forest; subalpine or alpine | 
		May, Jun, Jul | 
	
	
		| Pedicularis contorta | 
		Orobanchaceae | 
		white coiled-beak lousewort | 
		western forest; eastern forest; subalpine or alpine | 
		Jun, Jul, Aug | 
	
	
		| Penstemon attenuatus | 
		Plantaginaceae | 
		taper-leaved beardtongue; sulphur penstemon; taper-leaved penstemon | 
		eastern forest; subalpine or alpine; shrub-steppe | 
		Jun, Jul, Aug | 
	
	
		| Penstemon eriantherus | 
		Plantaginaceae | 
		crested-tongue penstemon; fuzzy-tongue penstemon | 
		eastern forest; shrub-steppe | 
		May, Jun, Jul | 
	
	
		| Penstemon eriantherus var. whitedii | 
		Plantaginaceae | 
		Whited's fuzzy-tongue penstemon | 
		  | 
		May, Jun, Jul | 
	
	
		| Phacelia ramosissima | 
		Hydrophyllaceae | 
		branched phacelia | 
		shrub-steppe | 
		May, Jun, Jul, Aug | 
	
	
		| Phoenicaulis cheiranthoides | 
		Brassicaceae | 
		daggerpod | 
		eastern forest; shrub-steppe | 
		Apr, May, Jun | 
	
	
		| Polystichum scopulinum | 
		Dryopteridaceae | 
		mountain holly fern; rock sword fern | 
		eastern forest; subalpine or alpine | 
		[no flowers] | 
	
	
		| Pseudognaphalium macounii | 
		Asteraceae | 
		sticky cudweed; winded cudweed; Macoun's rabbit-tobacco; Macoun's rabbit tobacco | 
		eastern forest; shrub-steppe | 
		  | 
	
	
		| Pseudostellaria jamesiana | 
		Caryophyllaceae | 
		sticky chickweed; sticky starwort | 
		eastern forest | 
		May, Jun, Jul | 
	
	
		| Robinia pseudoacacia * | 
		Fabaceae | 
		black locust | 
		freshwater; disturbed areas | 
		May, Jun | 
	
	
		| Rudbeckia alpicola | 
		Asteraceae | 
		showy black-eyed Susan; Washington showy black-eyed Susan; Wenatchee Mountain showy black-eyed Susan | 
		eastern forest; freshwater | 
		Jun, Jul, Aug | 
	
	
		| Suksdorfia violacea | 
		Saxifragaceae | 
		violet mock brookfoam | 
		eastern forest; freshwater | 
		Mar, Apr, May, Jun | 
	
	
		| Trifolium thompsonii | 
		Fabaceae | 
		Thompson's clover | 
		eastern forest; shrub-steppe | 
		May, Jun | 
	
	
		| Trillium petiolatum | 
		Melanthiaceae | 
		purple trillium; purple wake-robin | 
		eastern forest; freshwater | 
		Apr, May, Jun | 
	
	
		| Viola nuttallii var. praemorsa | 
		Violaceae | 
		canary violet; upland yellow violet | 
		western forest; eastern forest; prairie or bald; shrub-steppe | 
		Apr, May, Jun, Jul |