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Studies in the family Thelypteridaceae: VI. Phytogeographic census of the Indian species and their conservation strategies


, : Studies in the family Thelypteridaceae: VI. Phytogeographic census of the Indian species and their conservation strategies. Indian Fern Journal 10(1-2): 139-145

Holttum (1971) recognized 23 genera in the family Thelypteridaceae from the old world, of which about 21 genera and 105 species occur within the Indian region. Barring Khullar et al. (1983) detailed account of 14 genera and 23 species on the family Thelypteridaceae of Western Himalayas, and Kaur and Chandra's (1985) enumeration of Indian Thelypteridaceae no serious attempt has been made. Keeping in view of the inadequate knowledge about these taxa, the preliminary efforts have been made to summarize and analyse available data showing distributional pattern in to nine Botanical Phytogeographical regions as suggested by Jain (1983) within India i.e., North-West Himalayas: 11 genera, 23 species; Eastern Himalayas: 16 genera, 37 species; Western dry regions: 3 genera, 3 species; Gangetic plains: 4 genera, 5 species; Eastern India: 17 genera, 63 species; Deccan plateau: 13 genera, 24 species; Western Ghats: 9 genera and 13 species; Eastern Ghats: 4 genera, 5 species and Andaman and Nicobar Islands: 6 genera, 13 species. It is hoped that the present exhaustive phytogeographic account would provide suitable material for the correct assessment of abundance, rarity and of the extinction species etc. as well as work as a pointer towards the conservation strategies to be adopted. It would further encourage evaluation of Thelypteroid ferns occurring in a particular habitat and their subsequent trials for ex-situ conservation in the Botanical Gardens on priority.

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