Isoetes longissima subsp. intermedia

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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 longissima
Subspecies: Isoetes longissima subsp. intermedia


Isoetes longissima subsp. intermedia (Trab.) Troìa & Greuter, Willdenowia 44(2): 288. 2014.


  • Basionym
    • Isoetes velata tax. infrasp. intermedia Trab. in Battandier & Trabut, Fl. Alg. & Tunis. 407. 1905.
      • Typus: [Algeria]. Dans une mare au-dessus de Bou-Sfer, 30 Mai 1890, J.B.E. Clary s.n. (Holotypus: MPU 00856).
  • Homotypic
  • Heterotypic
    • Isoetes velata f. immaculata Maire. Bull. Soc. Hist. Nat. Afrique N. 28: 387. 1937.
      • Typus: Morocco. In lacuna oropedii calcarei Atlantis Medii prope castellum Ito, R. Maire & L. Emberger s.n. (Holotypus: MPU 002740).


Probably synonymous with Isoetes longissima (Troia & Rouhan 2018: 998)


Native distribution areas:
  • Continental: Africa
    • Regional: Northern Africa
      • Algeria, Morocco

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