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Isoetes riparia Engelmann ex A. Braun var. riparia . Common name: Shore Quillwort. Habitat: Shores. Distribution: Isoetes riparia is extirpated from most of its historic localities.

Origin/Endemic status: Endemic

Taxonomy Comments: A tetraploid species (2n=44). Isoetes riparia is believed to be a mid-Atlantic relative of I. septentrionalis.

Synonymy ⓘ: = POWO; < Isoetes riparia Engelm. ex A.Braun — AqW, C, Can, FNA2, K4, Pa, RAB, Tat; > Isoetes riparia Engelm. ex A.Braun var. amesii (A.A.Eaton) Proctor — NS; > Isoetes riparia Engelm. ex A.Braun var. riparia — NS. Basionym: Isoetes riparia Engelm. ex A.Braun 1846

Links to other floras: < Isoetes riparia - FNA2; < Isoetes riparia - FNA2

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: OBL (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily ⓘ: 8

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Horticultural Information

No horticultural data found for this taxon.