PlantQuest Species List for Walla Walla County, Washington

Scientific Name
(* = Introduced)		 Family Common Name Habitat Bloom Period
Alopecurus pratensis * Poaceae field meadow-foxtail western forest; freshwater; disturbed areas Jun, Jul
Artemisia tridentata ssp. tridentata Asteraceae big sagebrush
Astragalus arrectus Fabaceae hanging pod milk-vetch; Palouse milk-vetch eastern forest; shrub-steppe May, Jun
Astragalus caricinus Fabaceae buckwheat milk-vetch shrub-steppe Apr, May
Boechera pauciflora Brassicaceae Columbia rockcress; few-flowered rockcress; small-flowered rockcress eastern forest; shrub-steppe Apr, May, Jun
Castilleja lutescens Orobanchaceae yellow paintbrush eastern forest; shrub-steppe May, Jun, Jul, Aug
Cirsium undulatum Asteraceae wavy leaf thistle eastern forest; shrub-steppe; disturbed areas May, Jun, Jul, Aug, Sep, Oct
Clematis hirsutissima Ranunculaceae Douglas's clematis; leatherflower; sugarbowls; vaseflower eastern forest; shrub-steppe May, Jun
Cryptantha fendleri Boraginaceae sand dune cat's-eye; Fendler's cryptantha shrub-steppe Apr, May, Jun
Deschampsia danthonioides Poaceae annual hairgrass shrub-steppe; freshwater May
Drymocallis arguta Rosaceae cordilleran drymocallis eastern forest; shrub-steppe May, Jun, Jul
Eleocharis acicularis Cyperaceae needle spikerush freshwater; disturbed areas Jun, Jul, Aug, Sep
Eleocharis palustris Cyperaceae common spikerush freshwater May, Jun, Jul, Aug
Equisetum ferrissii Equisetaceae Ferriss's scouring rush; Ferriss's horsetail [no flowers]
Eragrostis cilianensis * Poaceae stinkgrass disturbed areas Jun, Jul, Aug, Sep, Oct
Erigeron piperianus Asteraceae Piper's fleabane shrub-steppe May, Jun
Eriogonum compositum var. leianthum Polygonaceae smooth arrow-leaf wild buckwheat May, Jun, Jul
Eriogonum microtheca var. laxiflorum Polygonaceae Great Basin wild buckwheat; Great Basin slender buckwheat eastern forest; shrub-steppe Jun, Jul, Aug
Eriogonum sphaerocephalum var. sphaerocephalum Polygonaceae rock buckwheat May, Jun, Jul
Eriophyllum lanatum var. lanatum Asteraceae common woolly sunflower May, Jun, Jul, Aug
Gilia inconspicua Polemoniaceae shy gily-flower shrub-steppe Apr, May, Jun
Gratiola neglecta Plantaginaceae American hedge-hyssop; clammy hedge-hyssop freshwater Jun, Jul, Aug
Greeneocharis circumscissa Boraginaceae cushion cryptantha; matted cryptantha shrub-steppe Apr, May, Jun, Jul
Helenium autumnale Asteraceae common sneezeweed; large flowered sneezeweed freshwater; disturbed areas Aug, Sep, Oct
Helianthus cusickii Asteraceae Cusick's sunflower; turniproot sunflower western forest; eastern forest; shrub-steppe Apr, May, Jun, Jul, Aug
Hordeum brachyantherum Poaceae meadow barley subalpine or alpine; saltwater shores; disturbed areas Jun, Jul, Aug
Krascheninnikovia lanata Amaranthaceae winterfat shrub-steppe Apr, May, Jun, Jul
Lathyrus lanszwertii var. bijugatus Fabaceae drypark pea
Lomatium dissectum Apiaceae fern-leaved biscuit-root; sessile-fruited fern-leaved biscuit-root; fern-leaved desert parsley; fern-leaved lomatium eastern forest; prairie or bald; shrub-steppe Apr, May, Jun
Lomatium salmoniflorum Apiaceae Salmon River biscuit-root; Salmon River desert-parsley shrub-steppe Mar, Apr, May, Nov-Feb
Lupinus leucophyllus var. leucophyllus Fabaceae velvet lupine
Madia exigua Asteraceae threadstem madia; little tarplant; little tarweed eastern forest; shrub-steppe; disturbed areas May, Jun, Jul
Microgilia minutiflora Polemoniaceae small-flowered gilia; small-flower skyrocket eastern forest; shrub-steppe Apr, May, Jun
Myosurus apetalus Ranunculaceae bristly mouse-tail; sedge mouse-tail eastern forest; subalpine or alpine; shrub-steppe Mar, Apr, May, Jun
Oreocarya spiculifera Boraginaceae Snake River oreocarya; Snake River cat's-eye subalpine or alpine; shrub-steppe May, Jun, Jul
Pascopyrum smithii Poaceae western wheatgrass eastern forest; shrub-steppe Jun, Jul, Aug
Penstemon acuminatus var. acuminatus Plantaginaceae sand dune beardtongue; sand dune penstemon; sharp-leaved penstemon
Penstemon attenuatus var. attenuatus Plantaginaceae taper-leaved beardtongue; sulphur penstemon; taper-leaved penstemon Jun, Jul, Aug
Penstemon speciosus Plantaginaceae royal beardtongue; showy penstemon eastern forest; shrub-steppe May, Jun, Jul
Penstemon triphyllus Plantaginaceae whorled beardtongue eastern forest; shrub-steppe May, Jun, Jul
Physaria douglasii ssp. tuplashensis Brassicaceae White Bluffs bladderpod shrub-steppe Mar, Apr, May, Jun, Jul
Potamogeton foliosus Potamogetonaceae leafy pondweed freshwater Jun, Jul, Aug
Ribes cereum Grossulariaceae wax currant eastern forest; subalpine or alpine; shrub-steppe Apr, May, Jun
Sagittaria cuneata Alismataceae arumleaf arrowhead; northern arrowhead; Sagittaria cuneaire; wapato freshwater Jun, Jul, Aug
Solidago missouriensis Asteraceae Missouri goldenrod western forest; eastern forest; prairie or bald; shrub-steppe; disturbed areas Jun, Jul, Aug, Sep, Oct
Symphyotrichum lanceolatum var. hesperium Asteraceae lance-leaved aster; panicled aster; white panicled aster
Taeniatherum caput-medusae * Poaceae medusa-head shrub-steppe; disturbed areas Apr, May, Jun

Generated on 2025-03-15.   Data from Consortium of PNW Herbaria and Burke Herbarium Image Collection.

More information on the PlantQuest Image Project can be found at https://burkeherbarium.org/imagecollection/plantquest.php.