Vascular Plants

Includes all flowering plants, conifers, ferns and fern-allies.


Browse by scientific name:

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Scientific names beginning with Z:
8 genera
9 species, 3 subspecies and varieties
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Zannichellia palustrishorned pondweed
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Fresh to brackish, standing to slow-flowing water, sea level to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Zea mayscorn
Origin: Introduced
ssp. mays – corn, Indian corn, maize
Zeltnera exaltatadesert centaury, tall centaury
Distribution: East of the Cascades in Washington; east to Nebraska and Colorado, south to eastern California.
Habitat: Moist places, especially around alkaline lakes and hot springs.
Origin: Native
Flowers: June-July
Zeltnera muehlenbergiiMuhlenberg's centaury, Muhlenberg`s centaury
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; British Columbia south to California, east to Idaho.
Habitat: Forest openings, wet areas at low to moderate elevations.
Origin: Native
Flowers: June-August
Zizania palustrisnorthern wild rice
Origin: Introduced
var. palustris – northern wild rice
Zizia apteraheart-leaved Alexanders
Distribution: Eastern Washington and northwest Oregon, east to central and eastern United States.
Habitat: Moist or wet meadows, stream banks, and moist low ground; tolerant of alkali.
Origin: Native
Flowers: May - July
var. occidentalis – heart-leaved Alexanders
Ziziphora acinosbasil-thyme
Origin: Introduced
Zostera marinacommon eelgrass, seawrack
Distribution: Widely distributed along the Washington coastline; Alaska south to California along the coast; also on the Atlantic Coast.
Habitat: Sub-tidal area.
Origin: Native
Flowers: June-August
Zygophyllum fabagoSyrian bean-caper
Distribution: Occurring east of the Cascades in Washington; Washington south to California, eastward in scattered localities to the Atlantic Coast.
Habitat: Disturbed soil and wasteland.
Origin: Introduced from Old World
Flowers: June-August