Isoetes tiguliana

Taxonavigation

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

Familia: Isoetaceae
Genus: Isoetes
Species: Isoetes tiguliana

Name

Isoetes tiguliana Gennari, Comment. Soc. Crittog. Ital. 1: 42 (1861) [February].

• Lectotype (designated by Troia & Greuter 2014: 16): “Isoetes tegulensis (Genn!), Teulada”, May 1859, Bellisai (FI 002102; isolectotype?: TO ex herb. Gennari).

Synonyms

• Homotypic
  • Isoetes tegulensis Gennari, Comment. Soc. Crittog. Ital. 1: 106 (1861) [September}, nom. illeg.
  • Calamaria tegulensis (Gennari) Kuntze, Rev. Gen. Pl. 2: 828 (1891).
  • Isoetes velata subsp. tegulensis (Gennari) Batt. & Trab., Fl. Algérie Tunisie 407 (1905).
  • Isoetes velata var. tegulensis (Gennari) Fiori & Paol., Fl. Anal. Ital. 1: 25 (1896).
• Heterotypic
  • Isoetes dubia Gennari, Comment. Soc. Crittog. Ital. 1: 104 (1861).
    • Lectotype (designated by Troia & Greuter 2014: 16): “Isoetes dubia Genn! Maddalena”, May 1861, [Gennari] (TO ex herb. Gennari; isolectotype: FI).
  • Isoetes dubia var. maculosa Gennari, Comment. Soc. Crittog. Ital. 1: 105 (1861).
    • Lectotype (designated by Troia & Greuter 2014: 16): “Isoetes dubia b maculosa Genn!, Maddalena”, May 1861, [Gennari] (TO ex herb. Gennari; isolectotype: FI).
  • Isoetes dubia var. emersa Gennari, Nuov. Giorn. Bot. Ital. 2: 96 (1870).
  • Isoetes tegulensis f. submersa Glück in A.A. Pascher, Süsswasserflora 15: 20 (1936).
  • Isoetes tegulensis f. terrestris Glück in A.A. Pascher, Süsswasserflora 15: 20 (1936).
  • Isoetes histrix var. submersa Trab. in Batt. & Trab., Fl. Algérie Tunisie 407 (1905).
    • Type locality: Reghaia

Distribution

Native distribution areas:
Continental: Europe Regional: Southwestern Europe Sardegna. Regional: Southeastern Europe Italy (in error), Sicilia (Sicily, doubtful). Continental: Africa Regional: Northern Africa Algeria, Morocco, Tunisia. References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition

References

Primary references

• Gennari, P. 1861. Nuova specie del genere Isoëtes. Commentario della Società Crittogamologica Italiana 1: 42. MDZ Reference page. 

Additional references

• 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. & Greuter, W. 2014. A critical conspectus of Italian Isoetes (Isoetaceae). Plant Biosystems 148(1): 13–20. DOI: 10.1080/11263504.2013.878409 ResearchGate Reference page. 
• Troìa, A. & Greuter, W. 2015. Flora Critica d'Italia. Isoetaceae. Versione 1.0. Fondazione per la flora Italiana, Firenze. PDF Reference page. 

Links

• Govaerts, R. et al. 2026. Isoetes tiguliana in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2026 Jun 7. Reference page. 
• International Plant Names Index. 2026. Isoetes tiguliana. Published online. Accessed: 7 Jun 2026. Reference page.
• Hassler, M. 2026. World Ferns. Checklist of Ferns and Lycophytes of the World. . Isoetes tiguliana Accessed: 7 Jun 2026. Reference page.
• Euro+Med 2006 onwards: Isoetes tiguliana in Euro+Med PlantBase – the information resource for Euro-Mediterranean plant diversity. Published online. Accessed: 2026 Jun 7.Reference page.