Isoetes longissima

Isoetes longissima


Taxonavigation: Isoetales 

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

Familia: Isoetaceae
Genus: Isoetes
Species: Isoetes longissima
Subspecies: I. l. subsp. adspersa – I. l. subsp. intermedia – I. l. subsp. longissima – I. l. subsp. perralderiana – I. l. subsp. tenuissima


Isoetes longissima Bory, Compt. Rend. Hebd. Séances Acad. Sci. 18: 1165 (1844).

  • Type locality: [Algeria] “dans une des mares des forêts qui environnent le lac Houbéira, au canton de la Calle”.
  • Lectotype (designated by Troia & Greuter 2014: 15): “La Calle, fond d’une Mare dans les Forêts pres du Lac Houbéira”, 31 May 1841, Durieu ex herb. Bory St Vincent (P 466542); isolectotype: P 466541 p.p., detached leaves to the right.


  • Homotypic
    • Isoetes velata var. longissima (Bory) A.Braun in Bory & Durieu, Expl. Sci. Algérie, Atlas: tab. 37, fig. 2 (1849).
    • Isoetes velata subsp. longissima (Bory) Greuter & Burdet, Med-Checklist 1: 5 (1984).
    • Calamaria longissima (Bory) Kuntze, Rev. Gen. Pl. 2: 828 (1891).
    • Isoetes setacea subsp. longissima (Bory) Greuter & Burdet, Willdenowia 14(1): 37 (1984).
  • Heterotypic


Native distribution areas:
  • Continental: Europe
    • Regional: Southwestern Europe
      • Baleares (Menorca), Corse, France, Portugal, Sardegna, Spain.
    • Regional: Southeastern Europe
      • Italy, Sicilia (Sicily (island)).
  • Continental: Africa
    • Regional: Northern Africa
      • Algeria, Libya, Morocco, Tunisia.

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


Additional referencesEdit


Vernacular namesEdit

français: Isoète voilé
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