A Systematic Study of the Pteridophytic Flora of Sivasagar District, Assam

An enumeration of the pteridophytes in the reserve forest of Sivasagar district, Assam, is presented and is the first report for the area. A total of 68 specimens of pteridophytes were collected and classified into 68 species from 27 families, the pteridophyte biodiversity in these reserve forests likely highest overall biodiversity region of Sivasagar district. Although ferns dominated at all taxonomic levels in different habitats. According to habitat types, the specimens can be classified into four groups: terrestrials 38 species, epiphytes 14 species, lithophytes 5 species, aquatic plant 08 species and climbers 3 species, although 5 species were found in more than one habitat.