An Annotated Checklist of the Vascular Flora of Coastal Mangrove Ecosystems of Barguna District, Bangladesh

Abstract

This study provides the basic taxonomic data on the vascular flora of the coastal mangrove ecosystems in Barguna district of Bangladesh. Plant samples and field data have been collected following walk through method. The present study reveals the occurrence of 532 species under 378 genera and 112 families in the study area, of which 24 are true mangroves, 46 mangrove associates and 461 non-mangroves. The pteridophytes are composed of 22 species under 20 genera of 12 families and gymnosperms of two species under two genera and two families. Magnoliopsida are composed of 375 species under 279 genera and 77 families, and Liliopsida of 133 species belonging to 77 genera under 21 families. Fabaceae with 28 species is recorded as the largest dicot family, followed by Asteraceae, Apocynaceae, Euphorbiaceae and Malvaceae. Poaceae with 45 species is the largest monocot family, followed by Cyperaceae, Araceae and Arecaceae. About 60.15% of these species are herbs, 21.80% trees, 15.79% shrubs, 1.88% palms and 0.38% bamboos. The study area composed with 74.06% native and 25.94% exotic species, 79.70% species are wild, 16.35% planted and 3.95% cultivated species. Majority of the species are found to grow in forest margin, roadside, woodland, wetland and river bank. Most of the species are economically useful as medicine, ornamental and vegetable. This study concludes that the floristic composition of coastal mangrove ecosystems of Barguna district is still rich though the area facing some severe threats. This study strongly recommends adopting effective master plan and implementing adequate measures for sustainable conservation and monitoring of the biodiversity of this disaster-prone area. Bangladesh J. Plant Taxon. 29(2): 403-429, 2022 (December)

Four new records for the vascular flora of Bangladesh

“…Souza and Salvia misella Kunth of Plantaginaceae and Lamiaceae, respectively. These species have never been reported earlier in any taxonomic literature published so far on the flora of Bangladesh (e.g., Hooker, 1872Hooker, -1897Prain, 1903a, b;Siddiqui et al, 2007;Ahmed et al, 2008Ahmed et al, , 2009aRahman et al, 2015;Haque et al, 2018;Shetu et al, 2018Shetu et al, , 2022Uddin and Hassan, 2018; *Corresponding author, email: gazibotju@gmail.com Hossain et al, 2019Hossain et al, , 2020Hossain et al, , 2021Hossain et al, , 2022Khanam et al, 2020;Roy and Khan, 2020a, b;Khan et al, 2021a, b;Islam et al, 2022). Therefore, these four species have been reported here as the new records of vascular plant species for Bangladesh.…”

A preliminary inventory of angiospermic flora of bagatipara upazila, natore, bangladesh

“…Apart from these, recent climate change conditions are becoming serious threats to the biodiversity of Bangladesh. Despite several floristic studies (Alam et al, 2006;Islam et al, 2009;Tutul et al, 2010;Uddin and Hassan, 2010;Arefin et al, 2011;Sarker et al, 2013;Kona and Rahman, 2015;Uddin et al, 2015;Uddin and Abiadbullah, 2016;Mahmudah et al, 2017;Khan et al, 2021;Islam et al, 2022) being conducted since the emergence of Bangladesh, the country's floristic exploration has not yet been completed. As a result, the floristic composition in most of the upazila or districts is still unknown or little known.…”