spiny-spored quillwort

Isoetes echinospora

Habitat 3

Aquatic or emergent, maturing in late summer in non-calcareous silty or peaty-sand, often amongst cobble and fine gravel; typically with little or no associated vegetation.

Distribution 3

Yukon: Southern Yukon south of 62°N
North America: Throughout Canada and Alaska, and western and northeastern United States
World: North America

Distinguishing Features 3

Can be separated from Maritime Quillwort, I. maritima, by having megaspores <30 micrometres, bearing thin sharp spines and having an obscure girdle. Maritime Quillwort has short, blunt, stout spines.

Sources and Credits

  1. (c) Biopix, some rights reserved (CC BY-NC), http://www.biopix.com/photos/jcs-isoetes-echinospora-58760.jpg
  2. (c) John Game, some rights reserved (CC BY-NC-SA), https://www.flickr.com/photos/47945928@N02/14692342737/
  3. (c) L.G. Johanson, some rights reserved (CC BY-SA)

More Info

Range Map

iNaturalist.ca Map

Plant All (Plantae), Quillwort Family (Isoetaceae)