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Isoetes echinospora Durieu. Spiny-spore Quillwort. Hab: In acid lakes, ponds, and rivers (submerged to emersed), tidal mud flats. Dist: Circumboreal, in North America from Greenland, NL (Labrador), and AK south to DE, n. OH, MI, WI, CO, and CA.

Origin/Endemic status: Native

Synonymy ⓘ: = AqW, FNA2, K3, Pa; = Isoetes tenella Léman – K1; = n/a – Tat; > Isoetes echinospora Durieu ssp. muricata – K4, NE, NY; > Isoetes echinospora Durieu var. braunii (Durieu) Engelm. – G; > Isoetes echinospora Durieu var. echinospora – F, G; > Isoetes echinospora Durieu var. muricata (Durieu) Engelm. – C, F, G; > Isoetes muricata Durieu

Links to other floras: = Isoetes echinospora - FNA2

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Great Plains: OBL
  • Midwest: OBL
  • Northcentral & Northeast: OBL

Heliophily ⓘ: 8

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image of plant© Alan Cressler: Isoetes tenella, Piseco Lake, Little Sand Point State Campground, Adirondack Park, Hamilton County, New York 3 by Alan Cressler source | Original Image ⭷
image of plant© Samuel Brinker, some rights reserved (CC BY-NC), uploaded by Samuel Brinker source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Samuel Brinker, some rights reserved (CC BY-NC), uploaded by Samuel Brinker source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Samuel Brinker, some rights reserved (CC BY-NC), uploaded by Samuel Brinker source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Alan Cressler: Isoetes tenella, Piseco Lake, Little Sand Point State Campground, Adirondack Park, Hamilton County, New York 1 by Alan Cressler source | Original Image ⭷

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