Blotiella - Dennstaedtiaceae

Blotiella tisserantii (Alston & Tardieu) Pic.Serm.






Lonchitis tisserantii Alston & Tardieu

Common name


Rhizome long and creeping, to 12 cm long, 1.5 cm diameter, densely brown-hairy at apex. Fronds spaced, up to 1.5 m tall. Stipe straw-coloured or brown, rather slender, densely covered with spreading hairs, 2.5 mm long with pustular bases. Lamina narrowly triangular or oblong in outline, up to ± 1 x 0.4-0.45 m, 2-pinnate. Non-pinnate pinnae 5–13 x 1.5–6 cm; terminal pinna and upper lateral pinnae of frond and also terminal parts of lower pinnae narrowly triangular in outline, pinnatifid; pinnules free, sometimes in upper part of frond joined by a winged rhachis, in about 7–11 pairs, oblong to oblong- lanceolate in outline, 3–5.5 x 1.5–2 cm, rather shallowly crenate, the crenulations mostly under 5 mm long, sessile or nearly so, ± densely covered with long white hairs. Rhachis slender, densely covered with short hairs, slightly roughened by hair-bases. Sori ± round to semilunate or U-shaped, small, in sinuses and crenulations.



tisserantii: named after Rev. C. Tisserant (1886-1962), French cleric, ethnologist, traveller, plant collector in Angola, Mozambique and the Central African Republic, author of works on flora and languages of the areas he visited.



Distribution worldwide

See African distribution.

Distribution in Africa

Cameroon, Central African Republic, Equatorial Guinea (incl. Bioko), Gabon, Nigeria, Tanzania , Uganda.

Growth form



  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Page 109.
  • Tardieu-Blot, M.-L. (1964) Ptéridophytes vol.3.Flore du Cameroun, Page 102.
  • Thardieu-Blot, M.L. (1964) Ptéridophytes vol.8.Flore du Gabon, Page 76. As Lonchitis tisserantii
  • Verdcourt, B. (1999) Dennstaedtiaceae.Flora of Tropical East Africa, Page 20.