Page author: David Giblin
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

Conservation Status: Not of concern


[none provided]

Accepted Name:
Isoetes occidentalis L.F. Hend.
Publication: Bull. Torrey Bot. Club. 27: 358. 1900.

Synonyms & Misapplications:
Isoetes flettii (A.A. Eaton) N.E. Pfeiff. [Abrams]
Isoetes lacustris L., misapplied [FNA2, HC]
Isoetes lacustris L. var. paupercula Engelm.
Isoetes paupercula (Engelm.) A.A. Eaton
Isoetes piperi A.A. Eaton [Abrams]
Additional Resources:

PNW Herbaria: Specimen records of Isoetes occidentalis in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Isoetes occidentalis checklist entry.

E-Flora BC: Isoetes occidentalis atlas page.

CalPhotos: Isoetes occidentalis photos.

USDA Plants: Isoetes occidentalis information.

8 photographs:
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