Isoetes riparia

Taxonavigation

Taxonavigation: Isoetales
Superregnum: Eukaryota Regnum: Plantae Divisio: Tracheophyta Divisio: Lycopodiophyta Classis: Lycopodiopsida Subclassis: Isoetidae Ordo: Isoetales

Familia: Isoetaceae
Genus: Isoetes
Species: Isoetes riparia

Name

Isoetes riparia Engelm. ex A.Braun, Flora 29: 178 (1846).

Type: Delaware river near Philadelphia, gravelly shore, Dr. Zantziger, August 1844 (Holotype: MO)

Synonyms

Homotypic
- Calamaria riparia (Engelm. ex A.Braun) Kuntze, Rev. Gen. Pl. 2: 828 (1891).
Heterotypic
- Isoetes foveolata var. plenospora A.A.Eaton, Rhodora 5(59): 280 (1903).
  - Type locality: Massachusetts, ponds in the vicinity of North Easton, 1902, R.M. Grey.
- Isoetes saccharata var. amesii A.A.Eaton, Rhodora 5(59): 278 (1903).
  - Type locality: Massachusetts, ponds in the vicinity of North Easton, 1902, R.M. Grey.
  - Isoetes amesii (A.A.Eaton) Gilbert, Fern Bull. 11: 103 (1903). nom. inval.
  - Isoetes canadensis var. amesii (A.A.Eaton) Clute, Fern Bull. 16: 54 (1908).
  - Isoetes riparia var. amesii (A.A.Eaton) Proctor, Amer. Fern J. 39: 119 (1949).
- Isoetes saccharata var. palmeri A.A.Eaton, Proc. Biol. Soc. Wash. 14(10) 49 (1901).
  - Type: Maryland, Lloyd's Creek, Sassafras River, 12.8.1895, T.C. Palmer (Herb. Eaton, US, MO, MIN)
  - Isoetes saccharata f. palmeri (A.A.Eaton) Clute, Fern Bull. 11: 25 (1903).
  - Isoetes riparia var. palmeri (A.A.Eaton) Proctor, Amer. Fern J. 39: 119 (1949).
- Isoetes saccharata var. reticulata A.A.Eaton, Proc. Biol. Soc. Wash. 14(10): 49 (1901).
  - Typus: Hunting Creek Bridge, 22 September 1900, Maxton s.n. (Holotypus: MO).
  - Isoetes saccharata f. reticulata (A.A.Eaton) Clute, Fern Bull. 11: 25 (1903).
  - Isoetes riparia var. reticulata (A.A.Eaton) Proctor, Amer. Fern J. 39: 119 (1949) (accepted by Brunton 2015).
Misapplied names
- Isoetes riparia var. canadensis auct. non Engelm., Trans. Acad. Sci. St. Louis 4: 383 (1882). nom. inval. = Isoetes × robusta
  - Isoetes canadensis auct. non A.A.Eaton, Proc. U.S. Nat. Mus. 23(1226): 650 (1901). = Isoetes × robusta
  - Isoetes riparia f. canadensis auct. non (Engelm. ex N.Pfeiff.) Proctor, Amer. Fern J. 39: 119 (1949). = Isoetes × robusta

Hybrids

I. × brittonii – I. × carltaylori – I. × jeffreyi – I. × novae-angliae

Distribution

Native distribution areas:
Continental: Northern America Regional: Northeastern U.S.A. Pennsylvania, West Virginia. Regional: Southeastern U.S.A. Delaware, Maryland, North Carolina, South Carolina, Virginia. References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2^nd Edition

References

Additional references

Brunton, D.F. & McNeill, J. 2015. Status, distribution, and nomenclature of Northern Quillwort, Isoetes septentrionalis (Isoetaceae) in Canada. Canadian Field-Naturalist 129(2): 174–180. DOI: 10.22621/cfn.v129i2.1698 Reference page.
Brunton, D.F. 2015. Key to the quillworts (Isoëtes: Isoëtaceae) of the southeastern United States. American Fern Journal 105(2): 86–100. DOI: 10.1640/amfj-105-02-86-100.1 . ResearchGate . Reference page.
Troìa, A., Pereira, J.B.S., Kim, C. & Taylor, W.C. 2016. The genus Isoetes (Isoetaceae): a provisional checklist of the accepted and unresolved taxa. Phytotaxa 277(2): 101–145. DOI: 10.11646/phytotaxa.277.2.1 ResearchGate Reference page.

Links

Govaerts, R. et al. 2024. Isoetes riparia in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2024 Sep 8. Reference page.
Tropicos.org 2024. Isoetes riparia. Missouri Botanical Garden. Published online. Accessed: 8 Sep 2024.
International Plant Names Index. 2024. Isoetes riparia. Published online. Accessed: 8 Sep 2024.
Hassler, M. 2024. World Ferns. Checklist of Ferns and Lycophytes of the World. . Isoetes riparia Accessed: 8 Sep 2024.