Macrothelypteris torresiana (Gaudich.) Ching

 
  • Family (Christenhusz et al, 2011) : THELYPTERIDACEAE
  • Family (As per The Plant List) : Thelypteridaceae
  • Species : Macrothelypteris torresiana
  • Basionym : Polystichum torresianum Gaudich.
  • Species Name (as per The Plant List) : Macrothelypteris torresiana (Gaudich.) Ching
  • Collection Nos : HFP 953, HFP 976
  • Collector(s) Name : F. M. Jarrett, C. J. Saldanha & T.P.Ramamoorthy; F.M.Jarrett & T.P.Ramamoorthy
  • Key identification features : Rhizome upto 5 cm thick, densely covered by linear-lanceolate scales all over. Stipes upto 67 cm long, 1 cm thick, dark brown and densely scaly at the base, pale brown and glabrous above with minute, dark brown spots on the persistent scale bases. Lamina broadly ovate or deltoid, bipinnate-pinnatifid, primary pinnae upto 15 pairs with acuminate apex; secondary pinnae upto 20 pairs, 2 cm apart; tertiary pinnae upto 18 pairs, margin lobed half way to the costule, lobes upto six pairs; costa slightly raised especially on the basal part above and below; costules distinct above and below; veins indistinct, not reaching the margin; pinnae pale green, texture herbaceous. Sori borne on the basal acroscopic veinlets of each lobe just above the forking point; spores reniform, monolete.
  • Habit : Herb-Terrestrial
  • Native : Paleotropics
  • Comments : Fairly common in partial shade in upper Ghats.
  • Conservation Status : Not Evaluated (NE)
  • Collection Locality : Hassan
  • Distribution Locality : Hassan; Kodagu; Shimoga
  • Floras referred : Fraser-Jenkins, Taxonomic revision of Indian Subcontinental Pteridophytes 2008; Rajagopal & Bhat, Pteridophytic flora of Karnataka State- 1998; Saldanha & Nicolson, 1976

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Digital Flora of Karnataka by Herbarium JCB is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Based on a work at http://florakarnataka.ces.iisc.ernet.in.