A Preliminary Taxonomic Study on the Flora of Rangpur District, Bangladesh

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)

Section: Methodsmentioning

confidence: 99%

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

Islam

Hossain

Rahman

2022

“…The representative plant specimens of all taxa were examined at Jahangirnagar University Herbarium (JUH) and Bangladesh National Herbarium (DACB). Taxonomic identification of the specimens and verification of the nomenclatural information has been completed, the families and genera have been arranged, data on the uses of the species have been collected and the status of threatened plant species in the study area has been inferred following Khan et al (2021b) and Hossain et al (2021). Most of the voucher specimens are stored at JUH and some at DACB.…”

Section: Map Of Bagerhat Districtmentioning

confidence: 99%

Floristic Survey of Vascular Plants in Coastal District Bagerhat of Bangladesh

Hossain

Khan

Shetu

et al. 2022

Self Cite

This survey provides the basic taxonomic data on the vascular flora of the disasterprone coastal district of Bagerhat. It has explored the occurrence of 964 species of vascular plants under 607 genera and 147 families in this district. About 68.88% of these species are native and 31.12% are exotic to Bangladesh. Pteridophytes are composed of 32 species under 22 genera of 14 families and Gymnosperms of seven species under six genera and five families. Angiosperms are comprised of 693 species of 450 genera and 99 families of Magnoliopsida (dicotyledons) that represent 71.89% of the flora, and 232 species belonging to 129 genera under 29 families of Liliopsida (monocotyledons) that constitute 24.07% of this flora. Fabaceae with 58 species is the largest dicot family, followed by Asteraceae, Euphorbiaceae, Apocynaceae, and Acanthaceae. Poaceae with 68 species is the largest monocot family, followed by Cyperaceae, Orchidaceae, Araceae and Arecaceae. The genus Cyperus is the largest in the study area, which is followed by Fimbristylis, Euphorbia, Ficus, Solanum and Ipomoea. The species Cipadessa baccifera (Roth) Miq. of Meliaceae is rediscovered in Bangladesh. About 63.35% of species of this flora and most of the Magnoliopsida and Liliopsida are herbs, 18.94% shrubs, 15.63% trees, and 1.55% palms. Nearly 70.81% of the species are wild and the rest are planted or cultivated. 17 species are recognized as rare in the study area due to their very restricted occurrence and poor regeneration. Most of the species grow in the fallow lands, roadsides, woodlands, homesteads, marginal lands and scrub jungles. The majority of the species have more than one uses, but most are useful as medicinals (70.39%) and ornamentals (25.57%). Though the study area is under the stress of different threats, its floristic composition is still rich. We strongly recommend adopting adequate effective measures for the conservation and sustainable development of this rich flora of the coastal region. Bangladesh J. Plant Taxon. 29(1): 43-78, 2022 (June)

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Hasan,

Uddin

2024

Preparation of the country's flora is very challenging until baseline information on the flora of all district or upazila is available. The purpose of this inventory was to record angiosperm plant species available in the different habitats of Bagatipara upazila, which is located in the eastern part of Rajshahi district. The traditional taxonomic method was applied for plant sample collection in different seasons of the year 2022 and the identification of the collected samples. This research resulted in the recording of a total of 377 species in 92 families. Among them, 310 species were from Magnoliopsida, and 67 were from Liliopsida. Asteraceae and Poaceae were the leading families of Magnoliopsida and Liliopsida, respectively. One-fourth of the total plant species were exotic, and more than half were valuable medicinal species. Artocarpus lacucha, Bridelia stipularis, Callicarpa longifolia, Eranthemum pulchellum, Oroxylum indicum, Potentilla supina, Sterculia foetida, and Terminalia arjuna were locally found rare. Threats such as climate change, expansion of arable land and pisciculture, use of herbicides, over exploitation, clearing brushwood, and unplanned construction activities have been identified. The present study concludes that the floristic composition of this area is still rich, though the area is facing some threats. Therefore, we strongly recommend adopting effective and adequate measures for sustainable conservation and monitoring of the biodiversity of this area. Bangladesh J. Plant Taxon. 31(1): 155-172, 2024 (June)