Isoetes riparia

Taxonavigation

Taxonavigation: Isoetales
Superregnum: Eukaryota Regnum: Plantae Divisio: Tracheophyta Divisio: Lycopodiophyta Classis: Isoetopsida 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 Engelm. in A. Gray, Manual, ed. 5. 676. 1867.
  - Calamaria saccharata (Engelm.) Kuntze, Rev. Gen. Pl. 2: 828. 1891.
  - Isoetes riparia f. saccharata (Engelm.) Clute, Fern Bull. 16: 57. 1908.
  - Isoetes riparia f. saccharata (Engelm.) Proctor, Amer. Fern J. 39: 119. 1949. comb. superfl.
- 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. TDGW – World Geographical Scheme for Recording Plant Distributions, 2^nd Edition

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.
Hassler, M. & Schmitt, B. 2017. World Ferns. Checklist of the Ferns and Lycophytes of the World. Version 7.19 – August 2017. Accessed 11 Sep 2017.

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