Taxonavigation

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Taxonavigation: Isoetales 

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

Familia: Isoetaceae
Genus: Isoetes
Species: Isoetes howellii

Name

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Isoetes howellii Engelm., Trans. Acad. Sci. St. Louis 4: 385 (1882).

  • Typus: U.S.A., Oregon: near The Dalles, June & August 1880, Howell s.n. (Holotypus: MO; isotypi: NY, US).

Synonyms

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  • Heterotypic
    • Isoetes melanopoda var. californica A.A.Eaton in Gilbert, Working List North American Pteridophytes 27 (1901).
      • Typus: Olema, Cal., Mrs. Brandegee & Miss Eastwood (Herb. Eaton, MO, MIN)
      • Isoetes melanopoda f. californica (A.A.Eaton) Clute, Fern-Allies 260 (1905).
    • Isoetes nuda Engelm., Trans. Acad. Sci. St. Louis 4: 385 (1882).
      • Typus: U.S.A., Oregon: near The Dalles, June & August 1880, Howell s.n. (among the specimens of the type collection of Isoetes howellii)
    • Isoetes underwoodii L.F.Hend., Bot. Gaz. 23: 124 (1897).
      • Type locality: Paradise creek, in and near Moscow, Idaho.

Hybrids

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I. × marensis

Distribution

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Native distribution areas:
  • Continental: Northern America
    • Regional: Western Canada
      • British Columbia.
    • Regional: Northwestern U.S.A.
      • Idaho, Montana, Oregon, Washington.
    • Regional: Southwestern U.S.A.
      • California, Utah.
    • Regional: Mexico
      • Mexico Northwest (Baja California, Baja California Sur).

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition

References

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Additional references

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Vernacular names

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English: Howell's Quillwort