Isoetes × harveyi

Taxonavigation

Taxonavigation: Isoetales
Superregnum: Eukaryota Cladus: Orthokaryota Cladus: Neokaryota Cladus: Photokaryota Cladus: Diaphoretickes Cladus: CAM Cladus: Archaeplastida Regnum: Plantae Divisio: Tracheophyta Divisio: Lycopodiophyta Classis: Lycopodiopsida Subclassis: Isoetidae Ordo: Isoetales

Isoetes × harveyi A.A.Eaton, Fernwort Papers 11 (1900), pro sp.

Formula hybridae: Isoetes macrospora Durieu × Isoetes tuckermanii Engelm.
Typus: United States, Maine, Oldtown, Pushaw Pond, F.L. Harvey s.n.; Mount Desert Island, pond north of Long Pond, M.L. Fernald s.n. (Syntypes: MIN, US).

Homotypic
- Isoetes tuckermanii var. harveyi (A.A.Eaton) Clute, Fern-Allies 227 (1905).
Heterotypic
- Isoetes heterospora A.A.Eaton, Fernwort Papers: 8 (1900).
  - Typus: United States, Maine, Mount Desert Island, Jordan Pond, Deerbrook Beach. E.L.Rand s.n. (MO, NY).
  - Isoetes tuckermani var. heterospora (A.A.Eaton) Clute, Fern-Allies 227 (1905).
  - Isoetes macrospora var. heterospora (A.A.Eaton) A.A.Eaton, Rhodora 10: 42 (1908).
  - Isoetes macrospora f. heterospora (A.A.Eaton) Clute, Fern Bull. 16: 56 (1908).

Eaton, A.A. 1900. The Genus Isoetes in New England. Fernwort Papers: 1–16. BHL Reference page.

Britton, D.M. 1991. A hybrid Isoetes, I. × harveyi, in northeastern North America. Canadian Journal of Botany 69(3): 634–640. DOI: 10.1139/b91-085 Reference page.
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. (treating Isoetes × heterospora as synonym of Isoetes macrospora)

Govaerts, R. et al. 2026. Isoetes × harveyi in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2026 Jun 9. Reference page.
Tropicos.org 2026. Isoetes × harveyi. Missouri Botanical Garden. Published online. Accessed: 9 Jun 2026. Reference page.
International Plant Names Index. 2026. Isoetes × harveyi. Published online. Accessed: 9 Jun 2026. Reference page.
Hassler, M. 2026. World Ferns. Checklist of Ferns and Lycophytes of the World. . Isoetes × harveyi Accessed: 9 Jun 2026. Reference page.