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Pteridophyte Flora of Rampahar and Sitapahar Reserve Forests Under Rangamati District in Bangladesh

SARDER NASIR UDDIN
Bangladesh National Herbarium, Chiriakhana Road, Mirpur‐1, Dhaka‐1216, Bangladesh

MD. ABUL HASSAN
Department of Botany, University of Dhaka,Dhaka‐1000, Bangladesh.

Abstract/ Executive Summary:

A taxonomic survey was conducted to study pteridophyte flora of Rampahar and Sitapahar reserve forests under Rangamati district in Bangladesh. The survey was accompanied with collection of voucher specimens of the available pteridopyte species in the area and deposition at Bangladesh National Herbarium as reference material. The study found 41 pteridophyte species belonging to 26 genera under 13 families from the area. It constitutes 21 per cent of total fern flora of the country including one threatened species viz. Tectaria chattagramica (Clarke) Ching.

Keywords: Pteridophyte flora, Reserve forest, Bangladesh

Location: Rampahar and Sitapahar reserve forests under Rangamati district in Bangladesh

Start Date: 00-00-2001

End Date: 00-00-2008

Program Area: Conservation and Biodiversity

Non-commodity: Data collection and collation

Objectives:

1. The floristic study of Rampahar and Sitapahar reserve forests was carried out aiming to generate baseline information for any conservation and management activity of the areas.

Methodology:

The present work deals with the pteridophyte species of Rampahar and Sitapahar forest areas and is based on the specimens collected through extensive field search. The floristic inventory was done by using area maps and regular field visits, accompanied by the collection of fertile specimens of all available plant species. A total of 19 botanical exploration tours were made during 2001?2008 and over 200 field numbers of plants were collected. The areas were visited in every month and the forest was reached by walking on foot following the existing forest trails. The herbarium specimens were examined for comparison at the Bangladesh National Herbarium, Dhaka University Salar Khan Herbarium and Bangladesh Forest Research Institute Herbarium. Collected specimens were identified. The specimens have been preserved at the Bangladesh National Herbarium (DACB). Fern families have been arranged according to the classification. The genera and species under each family have been arranged alphabetically. Each species has been furnished with valid name, full original citation, well?known synonym (in few cases), habit, ecology and representative specimen.

Source of Information: Dhaka Univ. J. Biol. Sci. 21(2): 153‐161, 2012 (July)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Floristic study of Rampahar and Sitapahar reserve forests has recorded a total 41 pteridophyte species distributed in 26 genera and 13 families. Of which, one species is aquatic, eight species are epiphytic and 32 species are terrestrial. Analysis shows that four families viz. Pteridaceae (11 species), Dryopteridaceae (7 species), Polypodiaceae (6 species) and Thelypteridaceae (5 species) constitute more than 70 per cent of total fern flora of the area, whereas, remaining nine families constitute less than 30 per cent. The study has found that 17 species are confined to Rampahar area, 14 species are confined to Sitapahar and only 10 species occur in both Rampahar and Sitapahar areas. This indicates that fern species are very much specific to their substrates or habitats. Among those species, Tectaria chattagramica (Clarke) Ching has been enlisted in Red data book by Khan et al.(20) The analysis also found that the study area (only 966 hactres of land) harbours 21 per cent of total fern flora of the country. Hence, it can be concluded that the area is an important habitat for fern species in the country.

Knowledge Management: Journal