| Scientific Name (* Introduced) |
Family | Common Name | Habitat | Bloom Period |
| Achnatherum richardsonii | Poaceae | Richardson's needlegrass, Richardson's ricegrass | ||
| Arnica rydbergii | Asteraceae | Rydberg's arnica, subalpine arnica, subalpine leopardbane | subalpine or alpine | jul, aug |
| Artemisia absinthium * | Asteraceae | absinthium, absinthe, wormwood, oldman | disturbed areas | jul, aug, sep |
| Astragalus agrestis | Fabaceae | purple milk-vetch, field milk-vetch, cock's-head | shrub-steppe, subalpine or alpine | jun, jul, aug |
| Astragalus robbinsii var. minor | Fabaceae | Robbin's milk-vetch | jun, jul, aug | |
| Carex buxbaumii | Cyperaceae | Buxbaum's sedge, brown bog sedge | freshwater, saltwater shores | jun, jul, aug |
| Carex heteroneura | Cyperaceae | subalpine or alpine | jul, aug | |
| Carex magellanica ssp. irrigua | Cyperaceae | Poor sedge | jun, jul, aug | |
| Cherleria obtusiloba | Caryophyllaceae | |||
| Crataegus douglasii | Rosaceae | black hawthorn, Douglas' hawthorn | western forest, eastern forest, shrub-steppe, freshwater | may, jun |
| Dasiphora fruticosa | Rosaceae | shrubby cinquefoil | western forest, eastern forest, subalpine or alpine | may, jun, jul, aug |
| Dodecatheon dentatum | Primulaceae | white shooting star | eastern forest, freshwater | may, jun, jul |
| Erigeron aureus | Asteraceae | golden fleabane, golden daisy | subalpine or alpine | jun, jul, aug |
| Eucephalus engelmannii | Asteraceae | Engelmann's aster | western forest, eastern forest, subalpine or alpine | jun, jul, aug, sep |
| Euphorbia glyptosperma | Euphorbiaceae | corrugate seeded spurge, rib seed sandmat, ridge seeded spurge | eastern forest, prairie or bald, shrub-steppe, disturbed areas | jun, jul, aug, sep |
| Geum aleppicum | Rosaceae | yellow avens | eastern forest, freshwater | jun, jul |
| Hedysarum sulphurescens | Fabaceae | white sweet-vetch, yellow sweet-vetch | eastern forest | jun, jul, aug |
| Hypericum perforatum * | Hypericaceae | common St. Johnswort, Klamath weed | western forest, eastern forest, prairie or bald, disturbed areas | jun, jul, aug |
| Juncus torreyi | Juncaceae | Torrey's rush | freshwater | jun, jul, aug |
| Lepidium densiflorum | Brassicaceae | common pepperweed, prairie peppergrass | eastern forest, shrub-steppe | apr, may, jun |
| Linanthus pungens | Polemoniaceae | prickly phlox | eastern forest, shrub-steppe | may, jun, jul |
| Lithophragma tenellum | Saxifragaceae | slender woodland-star | eastern forest, shrub-steppe | may, jun |
| Lythrum salicaria * | Lythraceae | purple loosestrife, long purples, | freshwater | jul, aug, sep |
| Myriophyllum spicatum * | Haloragaceae | spike water-milfoil, Eurasian water-milfoil | freshwater | apr, may, jun, jul, aug, sep, oct |
| Oreocarya glomerata | Boraginaceae | |||
| Oxyria digyna | Polygonaceae | alpine mountain-sorrel | subalpine or alpine | jun, jul, aug |
| Oxytropis campestris var. spicata | Fabaceae | |||
| Packera streptanthifolia | Asteraceae | Rocky Mountain groundsel, Rocky Mountain butterweed, cleftleaf groundsel | western forest, eastern forest, subalpine or alpine | may, jun, jul, aug |
| Penstemon fruticosus var. fruticosus | Plantaginaceae | Shrubby or bush penstemon | may, jun, jul, aug | |
| Penstemon pruinosus | Plantaginaceae | Chelan penstemon, Chelan beardtongue | eastern forest, shrub-steppe | may, jun, jul |
| Phyllodoce glanduliflora | Ericaceae | yellow mountain-heath | subalpine or alpine | jul, aug, sep |
| Physaria douglasii ssp. douglasii | Brassicaceae | |||
| Potentilla anserina | Rosaceae | freshwater, saltwater shores | apr, may, jun, jul, aug | |
| Potentilla argentea * | Rosaceae | silver cinquefoil | eastern forest | jun, jul |
| Ranunculus pensylvanicus | Ranunculaceae | Pennsylvania buttercup | ||
| Ruppia maritima | Ruppiaceae | beaked ditch-grass | freshwater, saltwater shores | jul, aug |
| Salix cascadensis | Salicaceae | cascade willow | subalpine or alpine | jun, jul, aug |
| Salix exigua var. exigua | Salicaceae | narrow-leaf willow, coyote willow | ||
| Schoenoplectus subterminalis | Cyperaceae | swaying bulrush, water clubrush, swaying clubrush | freshwater | jul, aug |
| Silene latifolia * | Caryophyllaceae | bladder campion, white campion | western forest, eastern forest, disturbed areas | jun, jul, aug |
| Sisymbrium loeselii * | Brassicaceae | small tumblemustard, false London rocket, Loesel's tumblemustard | shrub-steppe, disturbed areas | jun, jul, aug |
| Stephanomeria tenuifolia | Asteraceae | narrowleaf stephanomeria, wire lettuce | eastern forest, shrub-steppe, disturbed areas | jun, jul, aug, sep |
| Symphyotrichum bracteolatum | Asteraceae | bracted aster, Oregon aster, Eaton's aster | freshwater | jul, aug, sep |
| Symphyotrichum spathulatum | Asteraceae | western mountain aster | eastern forest, shrub-steppe | jul, aug, sep |
| Verbena bracteata | Verbenaceae | big-bract verbena, carpet vervain | eastern forest, shrub-steppe, disturbed areas | may, jun, jul, aug, sep |
| Veronica cusickii | Plantaginaceae | Cusick's speedwell | subalpine or alpine, freshwater | jul, aug, sep |
Data from Consortium of PNW Herbaria and Burke Herbarium Image Collection. Generated on January 24, 2022
More information on the PlantQuest Image Project can be found at https://biology.burke.washington.edu/herbarium/imagecollection/plantquest.php.