Isoetes
quillwort
8 species
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Isoetes bolanderi – Bolander's quillwort
Distribution: Ocurring on both sides of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains.
Habitat: Shallow water of pools, montane to subalpine.
Origin: Native
Growth Duration: Perennial
Distribution: Ocurring on both sides of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains.
Habitat: Shallow water of pools, montane to subalpine.
Origin: Native
Growth Duration: Perennial
Isoetes howellii – Howell's quillwort
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern Britich Columbia to California, east to northwestern Montana and Utah.
Habitat: Plants amphibious, in and around temporary lakes and pools, generally at low to middle elevations.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern Britich Columbia to California, east to northwestern Montana and Utah.
Habitat: Plants amphibious, in and around temporary lakes and pools, generally at low to middle elevations.
Origin: Native
Growth Duration: Perennial
Isoetes maritima – maritime quillwort
Distribution: Occurring west of the Cascades crest along the outer coast; Alaska to Washington, east to southwestern Alberta; also in eastern Asia.
Habitat: Aquatic, sometimes in tidal habitats, from the lowlands to montane.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest along the outer coast; Alaska to Washington, east to southwestern Alberta; also in eastern Asia.
Habitat: Aquatic, sometimes in tidal habitats, from the lowlands to montane.
Origin: Native
Growth Duration: Perennial
Isoetes minima – midget quillwort
Distribution: Occurring west of the Cascades crest in Washington, where known only from Kittitas and Spokane counties; south-central British Columbia to Washington;
Habitat: Seasonally moist swales and vernal pools at middle elevations among open conifer forest or sagebrush-steppe.
Origin: Native
Spores: June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington, where known only from Kittitas and Spokane counties; south-central British Columbia to Washington;
Habitat: Seasonally moist swales and vernal pools at middle elevations among open conifer forest or sagebrush-steppe.
Origin: Native
Spores: June
Growth Duration: Perennial
Isoetes nuttallii – Nuttall's quillwort
Distribution: Occurring on both sides of the Cascades crest in Washington; southwestern British Columbia to California.
Habitat: Plants terrestrial; wet prairies, balds, open wet ground at low elevations.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; southwestern British Columbia to California.
Habitat: Plants terrestrial; wet prairies, balds, open wet ground at low elevations.
Origin: Native
Growth Duration: Perennial
Isoetes occidentalis – western quillwort
Distribution: Occurring chiefly west of the Cascades crest; Alaska to California, east to the Rocky Mountains.
Habitat: Submerged in ponds and lakes, often in deep water, from the lowland to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest; Alaska to California, east to the Rocky Mountains.
Habitat: Submerged in ponds and lakes, often in deep water, from the lowland to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Isoetes tenella – bristle-like quillwort, spiny spored quillwort
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, also eastward to the Great Lakes region and northeastern North America; circumboreal.
Habitat: In shallow water or along shorelines of ponds and lakes, from the lowlands to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, also eastward to the Great Lakes region and northeastern North America; circumboreal.
Habitat: In shallow water or along shorelines of ponds and lakes, from the lowlands to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
