Robert W. Freckmann Herbarium

  Isoetes lacustris L. image
Photographer: from USDA Plants website           

Botanical Illustration

Kurt Stüber
Family Isoetaceae
Isoetes lacustris L.
deep-water quillwort, lake quillwort, large-spored quillwort
Isoetes: from Greek isos, "ever," and etas, "green," implying the character of being evergreen. Note"
lacustris: of or pertaining to lakes
County distribution map- click for detailed distribution maps.
Detailed Distribution:
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Status: Native
Plant: perennial, submersed aquatic; underground, thick, lobed stem with forked roots
Leaf:4 long air chambers, center vein, dark green, firm, often twisted
Habitat: wet; lakes, ponds, soft water 3' to > 10'; in sandy, gravelly soil

More Information Natural Communities Herbarium Specimens
All Isoetes list Google- Images or Text

Flora of North America (off site)
Isoetes hieroglyphica A.A.Eaton
Isoetes macrospora Durieu

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