Isoetes × robusta

Taxonavigation

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

Familia: Isoetaceae
Genus: Isoetes
Species: Isoetes × robusta

Name

Isoetes × robusta (Engelm.) D.F.Brunt., Rhodora 120(984): 307 (2018).

Formula hybridae: Isoetes echinospora Durieu × Isoetes septentrionalis D.F.Brunt.

Synonyms

Basionym
- Isoetes echinospora var. robusta Engelm., Trans. Acad. Sci. St. Louis 4: 380 (1882).
  - Type: U.S.A. Vermont: Grand Isle County. “In water one to two feet deep on a firm sandy soil with silt. North end of Isle La Motte, L. Champlain, C.G. Pringle s.n., 3 Sep 1879” (Lectotypus, designated by Brunton & Sokoloff, 2018: 307: MO 1852188 (the right-most of three plants), isolectotypes: CAN, DAO, P 00573947).
Homotypic
- Isoetes braunii f. robusta (Engelm.) N.Pfeiff., Ann. Missouri Bot. Gard. 9: 173 (1922).
- Isoetes echinospora f. robusta (Engelm.) Clute, Fern Allies 258 (1905).
- Isoetes muricata f. robusta (Engelm.) C.F.Reed, Amer. Fern J. 35: 82 (1945).
- Isoetes tenella f. robusta (Engelm.) Rothm., Feddes Repert. Spec. Nov. Regni Veg. 54: 73 (1944).
Heterotypic
- Isoetes × dodgei A.A.Eaton, Fern Bull. 6: 6 (1898), nom. amb. (Art. 7.1, 7.2, 38.2 ICN)
  - Typus: United States, New Hampshire, Kingston, September 1897. A.A. Eaton 942 (Lectotypus (designated by Kott & Britton 1983: 3156): MO 100803 (consisting of Isoetes septentrionalis and Isoetes echinospora × Isoetes septentrionalis), isolectotypi: {{GH}}, {{NY}})
  - Isoetes canadensis var. dodgei (A.A.Eaton) A.A.Eaton, Bull. Torrey Bot. Club 30: 362 (1903).
- Isoetes riparia var. canadensis Engelm., Trans. Acad. Sci. St. Louis 4: 383 (1882). nom. inval. (Art. 34.1 ICBN)
  - Syntypi: United States, Vermont, opposite Brattleboro, Connecticut River, 1866, C.C. Frost s.n. (MO; Maine, Cornish, J.W. Chickering (MO); Massachusetts, Dedham, C.E. Faxon 9 (MO).
  - Isoetes canadensis A.A.Eaton, Proc. U.S. Nat. Mus. 23(1226): 650 (1901).
  - Isoetes riparia var. canadensis Engelm. ex N.Pfeiff., Ann. Missouri Bot. Gard. 9: 184 (1922).
  - Isoetes riparia f. canadensis (Engelm. ex N.Pfeiff.) Proctor, Amer. Fern J. 39: 119 (1949).

References

Primary references

Brunton, D.F. & Sokoloff, P.C. 2018. Isoetes ×robusta, comb. nov., the appropriate name for I. echinospora × septentrionalis (Isoetaceae). Rhodora 120(984): 300–309. DOI: 10.3119/18-01 . ResearchGate . Reference page.
Eaton, A.A. 1898. A new Isoëtes. Fern Bulletin 6: 5–7. BHL Reference page.

Additional references

Kott, L.S. & Britton, D.M. 1983. Spore morphology and taxonomy of Isoetes in northeastern North America. Canadian Journal of Botany 61(12): 3140–3163. DOI: 10.1139/b83-353 Reference page.
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.

Links

Tropicos.org 2019. Isoetes × robusta. Missouri Botanical Garden. Published online. Accessed: 11 Nov 2019.