E-Flora BC: Electronic Atlas of the Flora of British Columbia

Isoetes maritima Underw.
coastal quillwort (maritime quillwort)
Isoetaceae (Quillwort family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #14585)

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Distribution of Isoetes maritima
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Species Information

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Perennial aquatic or semiterrestrial plants from a short, 2-lobed rootstock.
Deciduous in winter, pliant or stiff, 5-20 cm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Lake margins and shallow water in the lowland and montane zones; frequent in coastal BC, rare in SC BC; amphiberingian, N to AK and S to WA; E Asia (Bering Island).

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Isoetes beringensis
Isoetes echinospora subsp. maritima (Underw.) A. Löve
Isoetes echinospora var. maritima (Underw.) A.A. Eaton
Isoetes macounii
Isoetes muricata subsp. maritima (Underw.) Hultén

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References