Page author: David Giblin
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

Conservation Status: Not of concern


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Accepted Name:
Isoetes tenella Léman
Publication: Mém. Soc. Linn. Paris 6: 179. 1827.

Synonyms & Misapplications:
Isoetes braunii Durieu [Abrams]
Isoetes echinospora Durieu [FNA2, HC]
Isoetes echinospora Durieu var. braunii (Durieu) Engelm.
Isoetes echinospora Durieu var. muricata (Durieu) Engelm.
Isoetes muricata Durieu
Isoetes setacea Lam. [VPPNW1]
Additional Resources:

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

WA Flora Checklist: Isoetes tenella checklist entry.

E-Flora BC: Isoetes tenella atlas page.

CalPhotos: Isoetes tenella photos.

USDA Plants: Isoetes tenella information.

8 photographs:
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