Abstract
POLYPODIACEAE (sensu Copeland1), a part of the once comprehensive family Polypodiaceae (sensu lato), comprises 65 genera, occurring mostly as epiphytes in the tropical and subtropical evergreen and semi-evergreen forests. The genera are characterized by simple, pinnatifid or rarely pinnate fronds with round and rarely linear or acrostichoid typically exindusiate sori. A thorough analysis of the literature together with the study of herbarium specimens available in the Central National Herbarium, Sibpore, West Bengal, and Eastern Regional Herbarium of the Botanical Survey of India, Shillong, Assam, suggests that the family is represented in India by 26 genera and 104 species2, of which 91 species are distributed in various parts of eastern India, which incidentally appears to be richest in the fern flora in the whole country.
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References
Copeland, E. B., Genera Filicum (Waltham, Mass., 1947).
Panigrahi, G., and Patnaik, S. N., Indian Forester, 87 (4), 242 (1961).
Manton, I., Problems of Cytology and Evolution in the Pteridophyta (Cambridge, 1950); Appendix in Holttum, R. E., Flora of Malaya, 2 (Singapore, 1954). Manton, I., and Sledge, W. A., Phil. Trans. Roy. Soc., 238, 127 (1954).
Pichi-Sermolli, R. E. G., Vistas in Botany (London, 1959).
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PANIGRAHI, G., PATNAIK, S. Cytology of Some Genera of Polypodiaceae in Eastern India. Nature 191, 1207–1208 (1961). https://doi.org/10.1038/1911207a0
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DOI: https://doi.org/10.1038/1911207a0
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