Vascular Plants
Includes all flowering plants, conifers, ferns and fern-allies.
Browse by scientific name:
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
Scientific names beginning with Z:
8 genera
9 species, 3 subspecies and varieties
9 species, 3 subspecies and varieties
Show only taxa with photos
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Zannichellia palustris – horned pondweed
Distribution: Occurring on both sides of the Cascades crest in Washington Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Fresh to brackish, standing to slow-flowing water, sea level to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Fresh to brackish, standing to slow-flowing water, sea level to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Zeltnera exaltata – desert 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
Growth Duration: Annual
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
Growth Duration: Annual
Zeltnera muehlenbergii – Muhlenberg`s centaury
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Nevada.
Habitat: Forest openings, wet areas at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Nevada.
Habitat: Forest openings, wet areas at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Zizania palustris – northern wild rice
Origin: Introduced
Growth Duration: Annual
Origin: Introduced
Growth Duration: Annual
• var. palustris – northern wild rice
Zizia aptera – heart-leaved Alexanders
Distribution: Occurring east of the Cascades crest in north-central and eastern Washington; Yukon Territory to Nevada, east across much of North America to the Atlantic Coast.
Habitat: Moist or wet meadows, stream banks, and moist low ground; tolerant of alkali.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in north-central and eastern Washington; Yukon Territory to Nevada, east across much of North America to the Atlantic Coast.
Habitat: Moist or wet meadows, stream banks, and moist low ground; tolerant of alkali.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
• var. occidentalis – heart-leaved Alexanders
Zostera marina – common eelgrass, seawrack
Distribution: Occurring west of the Cascades crest in Washington\'s coastal counties; Alaska to California along the coast; also on the Atlantic Coast.
Habitat: Sub-tidal area.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington\'s coastal counties; Alaska to California along the coast; also on the Atlantic Coast.
Habitat: Sub-tidal area.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Zygophyllum fabago – Syrian 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
Growth Duration: Perennial
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
Growth Duration: Perennial
