• Ecological and phytogeographical observations on the fern flora of Pithoragarh district (north-west Himalaya)

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    • Keywords


      Ecology; ferns; Kumaon; phytogeography

    • Abstract


      A detailed account of ecology and phytogeography of the ferns of Pithoragarh district of Kumaon (north-west Himalaya) is discussed. Common mesophytic ferns are the species ofAdiantum, Athyrium, Cheilanthes, Christella, Dryopteris, Lygodium, Osmunda, Pseudocyclosorus andPteris. Polypodiaceous ferns are either epiphytes or lithophytes.Ceratopteris thallictroides is the only aquatic fern. From phytogeographical point of view it is observed that on the one hand the fern flora of this region bridges the floristics of eastern and western Himalaya, and on the other it resembles much with the fern flora of south China. About 70% ferns are common with Simla hills and 85% with Darjeeling and Sikkim himalaya.

    • Author Affiliations


      N Punetha1

      1. Department of Botany, Government PG College, Pithoragarh - 262 501, India
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