Isoetes longissima subsp. tenuissima

Taxonavigation

Taxonavigation: Isoetales
Superregnum: Eukaryota Regnum: Plantae Divisio: Tracheophyta Divisio: Lycopodiophyta Classis: Isoetopsida Ordo: Isoetales

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

Basionym
- Isoetes tenuissima Boreau, Bull. Soc. Industr. Angers 21: 269. 1851.
  - Type: France, Étang de Richaudron, commune d'Aszat (Haute Vienne), 2.9.1847, Chaboisseau (Original material not found in P and ANG by Troia & Rouhan 2018: 999).

Homotypic
- Calamaria tenuissima (Boreau) Kuntze, Rev. Gen. Pl. 2: 828. 1891.
- Isoetes velata subsp. tenuissima (Boreau) O.Bolòs & Vigo, Butll. Inst. Catalana Hist. Nat. 38: 64. 1974.
- Isoetes variabilis proles tenuissima (Boreau) Rouy, Fl. Fr. 14: 477. 1913.
- Isoetes variabilis subsp. tenuissima (Boreau) R.C.V.Douin in Bonnier, Fl. Compl. Fr. 12: 118. 1934.
- Isoetes variabilis var. tenuissima (Boreau) P.Fourn., Quatre Fl. France: 5. 1934.

Heterotypic
- Isoetes chaboissaei Hy, J. Bot. (Morot) 8: 97. 1894.
  - Isoetes variabilis var. chaboissaei (Hy) P.Fourn., Quatre Fl. France: 5. 1934.
- Isoetes tenuissima var. capillifolia Le Grand, Bull. Soc. Bot. France 42: 50. 1895. nom. nud.
- Isoetes tenuissima var. latifolia Le Grand, Bull. Soc. Bot. France 42: 50. 1895. nom. nud.
- Isoetes tenuissima var. longifolia Le Grand, Bull. Soc. Bot. France 42: 50. 1895. nom. nud.
- Isoetes viollaei Hy, J. Bot. (Morot) 7: 432. 1893, Bull. Herb. Boiss. 3, App. 1: 23. 1894.
  - Typus : [France]. (Haute-Vienne): Etang granitique de Riz-Chauvron commune d’Azat, Sep 1857, T. Chaboisseau s.n. [Hariot, S.E.E.F. 1892, n. 219] (Lectotypus (designated by Troia & Rouhan 2018: 999): P 01266653).
  - Isoetes variabilis proles viollaei (Hy) Rouy, Fl. Fr., 14: 478. 1913.
  - Isoetes variabilis var. viollaei (Hy) P.Fourn., Quatre Fl. France: 5. 1934.

Probably deserving species rank (Troia & Rouhan 2018: 999)

Native distribution areas:
Continental: Europe Regional: Southwestern Europe Baleares (in error), France, Spain (in error) References: Brummitt, R.K. 2001. TDGW – World Geographical Scheme for Recording Plant Distributions, 2^nd Edition

Troìa, A. & Greuter, W. 2014. Isoetes in Raab-Straube, E.v. & Raus, Th. (eds.): Euro+Med-Checklist Notulae, 3 [Notulae ad floram euro-mediterraneam pertinentes 32]. Willdenowia 44: 287–299. DOI: 10.3372/wi.44.44211

Troìa, A., Pereira, J.B.S., Kim, C. & Taylor, W.C. 2016. The genus Isoetes (Isoetaceae): a provisional checklist of the accepted and unresolved taxa. Phytotaxa 277(2): 101–145. DOI: 10.11646/phytotaxa.277.2.1 ResearchGate Reference page.

Troìa, A. & Rouhan, G.. 2018. Clarifying the nomenclature of some Euro-Mediterranean quillworts (Isoetes, Isoetaceae): Indicator species and species of conservation concern. Taxon 67(5): 996–1004. DOI: 10.12705/675.10 Reference page.

Euro+Med 2006 onwards: Isoetes longissima subsp. tenuissima in Euro+Med PlantBase – the information resource for Euro-Mediterranean plant diversity. Published on the internet. Accessed: 2017 9 18.
Hassler, M. & Schmitt, B. 2017. World Ferns. Checklist of the Ferns and Lycophytes of the World. Version 7.19 – August 2017. Accessed 15 Sep 2017.
Tela Botanica (ed.) 2000 onwards: Tela Botanica. Le réseau de la botanique francophone. eFlore. Isoetes longissima subsp. tenuissima. Association Tela Botanica, Montpellier, France. Accessed: 2017 9 16.

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