Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Isoetes echinospora Durieu image
Photographer: Michael Clayton           

Michael Clayton

Paul Skawinski

Paul Skawinski
Family Isoetaceae
Isoetes echinospora Durieu
spiny-spored quillwort, stiff quillwort
Isoetes: from Greek isos, "ever," and etas, "green," implying the character of being evergreen. Note"
echinospora: echinus for "sea-urchin, hedgehog;" hence "spiny;" spora for "seed"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: perennial, submersed aquatic; underground, thick, lobed stem with forked roots
Leaf:4 long air chambers, center vein, pale to medium green, soft, tapering to tip
Habitat: wet; lakes, ponds, soft water to > 7'; in sandy, sediment soil

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

Flora of North America (off site)
Isoetes braunii Durieu
Isoetes echinospora Durieu subsp. asiatica (Makino) A.Löve
Isoetes echinospora Durieu subsp. muricata (Durieu) A.Löve & D.Löve
Isoetes echinospora Durieu var. asiatica Makino
Isoetes echinospora Durieu var. boottii Engelm.
Isoetes echinospora Durieu var. braunii (Durieu) Engelm.
Isoetes echinospora Durieu var. hesperia (C.F.Reed) A.Löve
Isoetes echinospora Durieu var. muricata (Durieu) Engelm.
Isoetes echinospora Durieu var. robusta Engelm.
Isoetes echinospora Durieu var. savilei B.Boivin
Isoetes muricata Durieu
Isoetes muricata Durieu var. braunii (Durieu) C.F.Reed
Isoetes muricata Durieu var. hesperia C.F.Reed
Isoetes setacea Lam., pro parte
Isoetes setacea Lam. subsp. muricata (Durieu) Holub
Isoetes tenella auct. non L.

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