Distribution: Currently known only east of the Cascades crest in Washington; south-central British Columbia to northeastern Washington and west-central Idaho.
Habitat: Seasonally moist swales and vernal pools at middle elevations among open conifer forest or sagebrush-steppe.
Spores: June
Origin: Native
Growth Duration: Perennial
Conservation Status: Sensitive in Washington (WANHP)
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PNW Herbaria: Specimen records of Isoetes minima in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Isoetes minima checklist entry.
E-Flora BC: Isoetes minima atlas page.
CalPhotos: Isoetes minima photos.
USDA Plants: Isoetes minima information.