Diversity and inventorization of angiospermic flora in Dibrugarh district, Assam, Northeast India
DOI:
https://doi.org/10.14719/pst.2021.8.3.1118Keywords:
Angiosperms, flora, Native, invasive plants, TraditionalAbstract
The floristic composition of the Dibrugarh District of Assam has remained unexplored and the present study on Angiosperms addresses this fact. A total of 462 species of flowering plants belonging to 334 genera under 106 families recorded as per the APG IV system of classification and 116 families were recorded according to Bentham and Hooker system. 39% of native species were included in superorder Superrosids, 29% from superorder Superasterids, 18% from superorder Monocots and 7% from superorder Magnoliids. The orders with the highest number of native species were Lamiales (35), Malpighiales (29), Rosales (26), Gentianales (23), Sapindales (18), Fagales (19), Alismatales (17), Poales (14), Zingiberales (13) and Laurales (11) which accounted for 60.8% of the species. A total of 129 non-native or invasive species were represented in 12 superorders. Habit analysis showed that herbs were represented by the highest proportion followed by trees, shrubs and climbers. Twenty species are listed under various IUCN threat categories and one species under Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). Traditional uses of some reported species were also documented. The present study was conducted to understand the diversity of local flora, which can be helpful in the conservation of natural vegetation and sustainable utilisation of resources in this region.
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