| Scientific Name (* Introduced) |
Family | Common Name | Habitat | Bloom Period |
| Abronia latifolia | Nyctaginaceae | coastal sand verbena, yellow sand-verbena | saltwater shores | may, jun, jul, aug |
| Agrostis capillaris * | Poaceae | colonial bentgrass | prairie or bald, disturbed areas | jun, jul, aug |
| Agrostis gigantea * | Poaceae | redtop, black bentgrass | freshwater, disturbed areas | jun, jul, aug, sep |
| Ammophila arenaria * | Poaceae | European beach grass | ||
| Anemone oregana var. felix | Ranunculaceae | Oregon anemone | mar, apr, may, jun | |
| Angelica lucida | Apiaceae | seacoast angelica, sea-watch | freshwater, saltwater shores | jul, aug |
| Bellis perennis * | Asteraceae | English daisy, lawn daisy | disturbed areas | mar, apr, may, jun, jul, aug, sep |
| Bolboschoenus maritimus ssp. paludosus | Cyperaceae | salt-marsh bulrush | ||
| Boykinia intermedia | Saxifragaceae | western forest | jun, jul, aug | |
| Bromus pacificus | Poaceae | Pacific brome | western forest, prairie or bald | may, jun |
| Cakile edentula * | Brassicaceae | American sea-rocket | saltwater shores | jun, jul, aug, sep |
| Cakile maritima * | Brassicaceae | American sea-rocket | saltwater shores | may, jun, jul, aug, sep, may |
| Cardamine breweri | Brassicaceae | Brewer's bittercress | freshwater | apr, may, jun, jul, aug |
| Cardionema ramosissimum | Caryophyllaceae | |||
| Carex echinata ssp. phyllomanica | Cyperaceae | Coastal stellate sedge | may, jun, jul | |
| Carex livida | Cyperaceae | livid sedge, pale sedge | may | |
| Carex macrocephala | Cyperaceae | largehead sedge, bighead sedge, bighead sedge | saltwater shores | jun, jul |
| Cotoneaster franchetii * | Rosaceae | franchet's cotoneaster, orange cotoneaster | western forest, prairie or bald | may, jun |
| Epilobium luteum | Onagraceae | yellow willowherb | western forest, eastern forest, subalpine or alpine | jul, aug, sep |
| Fragaria chiloensis | Rosaceae | beach strawberry | saltwater shores | apr, may, jun |
| Glehnia leiocarpa | Apiaceae | |||
| Honckenya peploides | Caryophyllaceae | seaside sandplant, sea purslane | saltwater shores | may, jun, jul, aug, sep |
| Juncus hesperius | Juncaceae | coastal rush, bog rush | ||
| Juncus supiniformis | Juncaceae | hairy-leaf rush, hair-leaved rush, spreading rush | freshwater | jul, aug, sep |
| Lathyrus japonicus | Fabaceae | beach pea, pinewoods peavine | saltwater shores | may, jun, jul, aug, sep |
| Lepidium virginicum ssp. menziesii | Brassicaceae | tall peppergrass | eastern forest, prairie or bald, shrub-steppe | apr, may, jun |
| Lupinus arboreus * | Fabaceae | yellow bush lupine, tree lupine | saltwater shores, disturbed areas | may, jun, jul, aug, sep |
| Lupinus littoralis | Fabaceae | seashore lupine | saltwater shores | may |
| Moneses uniflora | Ericaceae | single-delight | western forest, eastern forest | may, jun, jul |
| Nephrophyllidium crista-galli | Menyanthaceae | |||
| Poa confinis | Poaceae | coastline bluegrass | may | |
| Poa macrantha | Poaceae | seashore bluegrass, sand-dune bluegrass | saltwater shores | apr, may, jun, jul |
| Poa marcida | Poaceae | withered bluegrass | ||
| Podagrostis aequivalvis | Poaceae | Arctic bent | ||
| Polygonum paronychia | Polygonaceae | beach knotweed, black knotweed | saltwater shores | may, jun, jul, aug, sep |
| Polypodium scouleri | Polypodiaceae | leathery polypody, coast polypody, Scouler's polypody | western forest | no flowers |
| Polypogon monspeliensis * | Poaceae | annual rabbit's-foot grass | disturbed areas | may, jun, jul, aug |
| Sagina procumbens * | Caryophyllaceae | bird-eye pearlwort | western forest, eastern forest, freshwater, disturbed areas | may, jun, jul, aug, sep, oct |
| Schedonorus arundinaceus * | Poaceae | tall fescue | prairie or bald, disturbed areas | may, jun, jul |
| Senecio sylvaticus * | Asteraceae | woodland ragwort, woodland groundsel, wood groundsel | disturbed areas | may, jun, jul, aug, sep |
| Stachys mexicana | Lamiaceae | Mexican hedge-nettle | western forest, eastern forest | jun, jul, aug |
| Trisetum cernuum | Poaceae | nodding Trisetum | ||
| Vicia hirsuta * | Fabaceae | tiny vetch, hairy vetch | western forest, disturbed areas | may |
| Vulpia bromoides * | Poaceae | brome fescue, brome six-weeks grass | shrub-steppe, saltwater shores | apr, may, jun |
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.