The Madan Kamdev Hill region comprises an area of 450 km2 that is situated on the north bank of the river Brahmaputra in the Kamrup district of Assam. Geographically it is located in between latitude 26°10 – 26°20'N and longitude 91°40' – 91°50'E. It is bounded by Bornodi River in the east, North Guwahati and the mighty Brahmaputra river on the southern boundary. The northern and western boundary are formed by the NH-52 & NH-31 and NF railway lines respectively.
The present work was undertaken during 2012-2015 which deals with 72 species of ferns and fern-allies under 38 genera and 24 families. The families were arranged as per the system of Christenhusz et al. (2011) with a slight modification followed for the enumeration of species. The collected specimens were prepared to standard herbarium criteria and identified at the Regional Herbarium Centre of the BSI and the Kanjilal Herbarium (Assam), Shillong.