Bangladesh Journal of Plant Taxonomy

Utricularia rosettifolia Alfasane & Hassan sp. nov. (Lentibulariaceae) - A new species from Bangladesh

2020-12-11T10:14:53+00:00

A new species, Utricularia rosettifolia Alfasane & Hassan (Lentibulariaceae), is described with illustration. Detailed taxonomic description including information on type specimens, flowering and fruiting time, ecology, and distribution in Bangladesh are provided. The diagnostic characters of this species and comparison with its closest one are also provided.

Bangladesh J. Plant Taxon. 27(2): 205-211, 2020 (December)

The anatomical structures of the genus Iberis L. (Brassicaceae) in Turkey

2020-12-11T10:14:57+00:00

The present study was designed to analyse the anatomy of the vegetative and reproductive parts of Turkish Iberis species from a systematic point of view. Samples of leaves, stems, roots, fruits, and seeds of each species were collected, fixed, and processed according to the paraffin method for light microscopy. The numerical analysis derived from 11 anatomical characteristics showed that the number and dimensions of vessels in the root, presence of aerenchyma in the leaf, number and dimensions of palisade parenchyma, and mesophyll type were useful for grouping the Iberis taxa. The testa was composed of four layers: the epidermis, subepidermis, compact tissue, and parenchyma. The testa thickness was a significant character to distinguish the investigated Iberis species. In this study, the traditional classification of Turkish Iberis species was mostly congruent with the dendrogram generated vegetative anatomical properties.

Bangladesh J. Plant Taxon. 27(2): 213-224, 2020 (December)

Taxonomic notes on Nelumbo Adans. with a new cultivar ‘Gomoti’ from Bangladesh

2020-12-11T10:15:00+00:00

Living specimens of three colour forms (pink, white and yellowish white) of Nelumbo nucifera Gaertn. were observed in different natural habitats of Bangladesh and collected. Fresh specimens were studied in the field as well as in the laboratory. After detailed study it was concluded that the three colour forms available in Bangladesh belong to the same species, Nelumbo nucifera Gaertn. However, the yellowish white colour form, having many stamens petaloid, is considered as a new cultivar Nelumbo nucifera ‘Gomoti’ and reported here as the first lotus cultivar from Bangladesh.

Bangladesh J. Plant Taxon. 27(2): 225-231, 2020 (December)

Auto-taxonomy of Brassica tournefortii Gouan. (Brassicaceae) in Egypt

2020-12-17T16:04:04+00:00

Brassica tournefortii Gouan. (family Brassicaceae) is one of the five species in the Egyptian flora. Its populations showed notable morpho-plasticity with taxonomic debates, which were not yet resolved. The current study was carried out to assess the species morpho-plasticity and its molecular identity based on ISSR. The study was applied to 27 herbarium and fresh populations, representing all the species distribution ranges in Egypt. The taxonomic revision included 70 morphological characters, revealed five distinct Forms (1-5), radical leaf, and fruit provided the major distinguishable traits among the studied 70 morphological characters based on them the morphologic key is provided to delimit these forms. The pollen grain features using SEM are a pioneer at the infra-specific level, two shapes observed the subprolate (Forms 1& 3) and prolate (Forms 2, 4 & 5). Furthermore, the exine micro-features possess taxonomic value at the infraspecific level. The cluster analysis based on ISSR data revealed two clusters congruent to those developed by morphological and pollen traits. The ISSR results indicated that the species morpho-plasticity is genetically controlled. The study highlights the importance of the multidisciplinary approach to assess the taxonomic identity at the infra-specific level, for the auto-taxonomy of morpho-plastic species.

Bangladesh J. Plant Taxon. 27(2): 233-250, 2020 (December)

New records of three species and a variety of Angiosperms for Bangladesh

2020-12-11T10:15:06+00:00

During the floristic explorations in Sundarbans mangrove forest of Bangladesh, conducted in 2016-2019, the authors collect some specimens of Angiosperms that are finally identified as Cleisostoma simondii (Gagnep.) Seidenf. of Orchidaceae and Volkameria heterophylla Vent. of Lamiaceae. Specimens of C. simondii are further identified as C. simondii var. guandongense Z.H. Tsi. The authors collect some specimens of another angiospermic plant in 2019 from Gazipur district of Bangladesh and confirm their identification as Leucas martinicensis (Jacq.) R. Br. of family Lamiaceae. All of these taxa are recorded here for the first time from Bangladesh. Detailed taxonomic description with notes on ecology, uses, distribution and distinctness from morphologically similar taxa, photographs and illustration are provided.

Bangladesh J. Plant Taxon. 27(2): 251-260, 2020 (December)

The importance in DNA barcoding of the regions which is covering rRNA genes and its sequences in the genus Quercus L.

2020-12-11T10:15:08+00:00

Turkey with 18 oak (Quercus) species is one of the richest country according to species number and diversity. The most important reason of the species diversity in Turkey is its location and geomorphological structure which increase climatic effects and seperate Turkey into different phytogeographic regions. Furthermore, hybridization behaviours which frequently observed between oak species, genetic drift, gene flow and ecological factors cause morphological variations in the plants species. All of these factors make it difficult to define the species concept for plant groups like oaks. Therefore, the region covering 18S rRNA gene/ ITS1/ 5.8S rRNA gene/ ITS2/ 25S rRNA gene and secondly intergenic spacer (IGS)/ 5S rRNA gene for barcoding were obtained from genbank and used as a useful tool for the determination and solution of the phylogenetic relations of taxonomically problematic species, also these barcoding regions were compared with each other according to species recognition ability for oak species. As a result, it can be stated that both barcoding regions have high variable sites based on sequence information to identify the species and evaluate relationships of species studied.

Bangladesh J. Plant Taxon. 27(2): 261-271, 2020 (December)

Structure, morphogenesis of calyptra and nomenclatural identity of Trichodesmium erythraeum Ehr. (Cyanobacteria) newly recorded off the Southwest coast of Bangladesh

2020-12-17T16:12:43+00:00

Trichodesmium erythraeum Ehrenberg 1830 (Cyanobacteria) has been described and newly recorded from three km off the west coast of the St. Martin’s Island (SMI), Cox’s Bazar, Bangladesh. The Red Sea algal bloom was narrowly elliptical raft-like loose aggregates 20-40 cm long, 4-8 cm wide and 2-3 cm thick. Volume of small and large Sea sawdust were 160×10-6 to 960×10-6 m3 consisting of 25-153 millions flat tuft or spindlelike colonies measured 830-1500 μm long and 155-260 μm wide with 13-16 filaments laterally in the median region. Sheath was present around each trichome even covering the tip cell wall the feature has so far not been reported for the Trichodesmium spp. Because of most likely sticky nature of the sheath 300-600 μm long filaments of 195-450 formed compact colonies without colonial sheath around. In interior filaments cells were rectangular 7-10 μm long and 6.3-10 μm wide with abundant gas vacuoles, bluish-green red, no diazocytes developed and without calyptrae. Cells of peripheral filaments were without gas vacuoles, cytoplasm disorganized, appearing necrotic with glycogen granules, and produced convex to sickle-shaped four-layered calyptra consisting of outermost sheath followed by outer extra thick wall, tip cell wall and inner extra thick wall on the tip cell. Calyptra was also produced on tip cells of tapered filaments. Presence of sheath around each trichome binding all filaments into a colony without colonial sheath described here, and presence of nitrogenase containing diazocytes in interior filaments, both temporal and spatial segregation of N2 fixation and photosynthesis within the photoperiod described and discussed in literature made the authors to consider T. erythraeum Ehr. a distinct taxon under family Microcoleacece.

Bangladesh J. Plant Taxon. 27(2): 273-282, 2020 (December)

Comparative midrib anatomy of Monodora Dunal. and Isolona Engl. (Annonaceae) from West-central Africa

2020-12-11T10:15:11+00:00

This article assessed midrib anatomical description of Isolona Dunal. And Monodora Engl. (Annonaceae) from West-Central Africa. Twelve species of tribe Monodoreae were investigated on the basis of micromorphology of midrib characters with the aid of light microscopy. The study provided important taxonomic characters which aid delineation of inter and infrageneric species within the duo genera. The generic features include centrally positioned, open collateral vascular bundle and furrow shaped midribs which are diagnostic to the genera.U shaped vascular bundles are present in most of the species with inviginating or expanded endings while marginal traces vary from 2 to 4. The presence of keel protrusion at abaxial surface established a closer affinity among M. angolensis, M. crispata, and M undulata with additional features species were delimited. Other variable useful features of midrib encountered are trichomes, parenchyma, collenchyma and sclerenchyma, and adaxial and abaxial shape. The midrib characters have been used to prepare an indented dichotomous key to delimit the species in the genera studied.

Bangladesh J. Plant Taxon. 27(2): 283-291, 2020 (December)

A synoptical account on the flora of Dohar upazila under Dhaka district of Bangladesh

2020-12-11T10:15:13+00:00

A taxonomic study on the flora of Dohar upazila (sub-district) under Dhaka district has been conducted that results in occurrence of 204 angiosperm taxa under 165 genera and 68 families. Magnoliopsida is represented by 158 taxa distributed in 129 genera and 53 families. In contrast, Liliopsida is constituted by 46 taxa under 36 genera and 15 families. Asteraceae appears to be the largest family in Magnoliopsida consisting of 16 species, whereas Poaceae is the largest family with 16 species in Liliopsida. In Magnoliopsida, 23 families are represented by a single species, while in Liliopsida, 7 families are symbolized by a single species. Vegetation analysis shows that herbs are represented by 133 taxa, shrubs by 23 and trees by 48 taxa. Dichotomous bracketed keys to the families, genera, species and varieties are provided for easy identification of the taxa. Each taxon is supplemented by updated nomenclature, habit and representative specimen.

Bangladesh J. Plant Taxon. 27(2): 293-322, 2020 (December)

The molecular identification of Zanthoxylum armatum DC of Pakistan based on DNA barcoding

2020-12-11T10:15:14+00:00

Zanthoxylum armatum DC., belonged to the family Ruteacea, is a medicinal plant used to cure many diseases. DNA barcoding was used as a tool for molecular identification of Zanthoxylum armatum DC. species from Balakot Pakistan. In the present study four DNA barcodes including matk, rbcl, ITS and trnH-psbA were used. The sequenced data were analyzed by using BLASTn at NCBI, FASTA and Mega 7.0 software. During PCR analysis, 3 DNA barcodes ITS, rbcl and trnh-psbA were successfully amplified and showed the 100% sequencing success. Furthermore, these barcode markers showed 99-100% sequence similarity with the reference sequences at the BLASTn. The further analysis revealed the sequence similarity of investigating marker with Zanthoxylum armatum (MH016484.1), Zanthoxylum nitidum (FN599471.1) and Zanthoxylum bungeanum (MF097123.1) respectively. The current finding provides the basis for sequenced data of Z. armatum to be used in future for molecular discrimination among the plant species from Pakistan and it is concluded that combination of diverse kind of barcoding markers could be helpful in proper identification of species at lower taxonomic level.

Bangladesh J. Plant Taxon. 27(2): 323-333, 2020 (December)

New records of seaweeds from southeastern coasts of Cox’s Bazar district, Bangladesh

2020-12-11T10:15:16+00:00

Gracilaria tenuistipitata var. liui Zhang et Xia 1988 from sand-flat at Nuniachara, Cox’s Bazar, Ulva linza Lin. from west coast of Naf R. at Noapara, Teknaf and Fishary Ghat in River Bakkhali, at Cox’s Bazar, and Caulerpa fergusonii Murray from St. Martin’s Island (SMI), have been newly recorded and illustrated from Bangladesh. C. chemnitzschi (Esper) Weber-van Bosse var. irregulare Aziz & Alfasane var. nov. and C. sertularioides (S.G. Gmelin) M. Howe var. robusta Aziz & Alfasane var. nov. from SMI, Cox’s Bazar District, Bangladesh are new to science. Total number of marine algal taxa so far recorded from Bangladesh coasts is now 210.

Bangladesh J. Plant Taxon. 27(2): 335-343, 2020 (December)

Bibliographical note on the syntaxonomy of the vegetation of Tlemcen, Hafir, Moutas and its reserve (North-western Algeria)

2020-12-17T16:27:37+00:00

This study provides bibliographical note on the syntaxonomy of the vegetation of Tlemcen, Hafir, Moutas of North-western Algeria, including the associations and alliances of the different higher units found in the Hafir forest and the Moutas Reserve. In this work, we observed modifications of forest and pre-forest structures according to bioclimatic variations. However, in this region, the xericity of the climate is not the only factor destroying the plant cover, anthropization is also a degradation factor. While being aware of the negative consequences, man, through their abusive cultivation, illegal logging, overgrazing, urbanization, the depletion of natural resources;, inhibits the evolution of vegetation, participates in the replacement of a rich plant cover by another and more xerophytic plant cover with thorny and/or toxic feature. The landscape is dominated, for the most part, by open and degraded formations based on therophytes and chamaephytes, linked to Rosmarinetea and Cisto-Lavanduletea. The tree structures in Hafir and the Moutas reserve, still occupy only minimal areas subject to the destructive actions of man and his flock. These formations are still linked to the Quercetea ilicis. These ecosystems are marked by a regressive evolution (forest, pre-forest, scrub, scrubland and therophytization).

Bangladesh J. Plant Taxon. 27(2): 345-358, 2020 (December)

Leafy vegetables in Chapai Nawabganj district of Bangladesh focusing on medicinal value

2020-12-11T10:15:19+00:00

Leafy vegetables in Chapai Nawabganj district of Bangladesh was studied from January to December 2019. A total of 111 species belonging to 59 genera under 30 families were recorded, out of which, 52.25% species were wild and 46.84% species were cultivated in this study. Status of occurrence has been recorded for proper conservation management and sustainable utilization of the taxa resulting in 81.98% to be common, 17.11% as rare and 0.90% are found as vulnerable in the study area. A total of 93 medicinal plants have been documented with their uses for the cure of more than 53 diseases. The study showed that the people of Chapai Nawabganj district use leafy vegetables to treat their diseases. Therefore, the documented leafy vegetables should be further investigated for their efficacy and safety to be integrated into conventional medicine. Further more these leafy vegetables need to be conserved for their sustainable utilization.

Bangladesh J. Plant Taxon. 27(2): 359-375, 2020 (December)

A study on wild edible plants for human consumption in Hizan county of Bitlis, Turkey

2020-12-11T10:15:20+00:00

This study covers the edible plants in Hizan where there is a rich culture of plant consumption. The study was conducted between 2018 and 2019 to record the culture of traditional food plant use of the local people in Hizan. In this regard, the face-to-face interviews with the local people were made, and the relevant plants used were collected and identified. A total of 65 species of wild edible plants belonging to 24 families were identified, and their different traditional usages were categorized as cooked, cheese making, rennet, specie and gum producing, and as raw or beverages etc. In addition, the use-value (VU) index was calculated for each species. The mostly used species included Rheum ribes L. (UV: 0.70), Gundelia tournefortii L. (0.66), Silene vulgaris (Moench) Garcke, Rosa canina L. (0.64), Urtica dioica L. (0.63), Malva neglecta Wallr. (0.61), and Pistacia khinjuk Stocks (0.60). The culture of edible plant use is widespread throughout the Anatolia. However, traditional uses of many wild plants have not been recorded yet. Therefore, this research will be an important contribution to the preservation of the cultural heritage associated with traditional wild edible plants in this region.

Bangladesh J. Plant Taxon. 27(2): 377-389, 2020 (December)

Angiosperms in Narsingdi district of Bangladesh: Class Liliopsida

2020-12-11T10:15:21+00:00

This study provides the taxonomic data on 168 plant species belonging to 96 genera and 23 families of Liliopsida (monocotyledons) extant in Narsingdi district of Bangladesh. These species are mostly comprised of herbs (90.48%), followed by trees and shrubs (4.76% each). Poaceae with 66 species under 37 genera is the best represented family, followed by Cyperaceae with 26 species of seven genera, Araceae with 16 species of 11 genera, Commelinaceae with 11 species of four genera and Arecaceae with 10 species of eight genera. Cyperus with 13 species appears as the largest genus, which is followed by Panicum with nine species, Digitaria with six species, and Commelina and Dioscorea with five species each. The six upazilas of this district are 39.77% similar in the species composition of their Liliopsida, but the similarity between the pairs of upazilas varies from 6.45% to 32.31%. Roadside and fallow land habitats share the highest similarity (36.84%) in species composition. Total 117 species are distinguished as economically useful. This study suggests for implementation of necessary measures in order to minimize the major threats to this plant group and to favor its sustainable development in the study area.

Bangladesh J. Plant Taxon. 27(2): 391-405, 2020 (December)

Preliminary taxonomic study on homestead flora of four districts of Bangladesh: Liliopsida (Monocotyledons) and Pteridophyta

2020-12-11T10:15:23+00:00

This study provides basic taxonomic data on Liliopsida (monocotyledons) and Pteridophyta of the representative homestead areas of Dhaka, Gazipur, Manikganj and Tangail districts of Bangladesh. The monocotyledons and pteridophytes, growing naturally in the homstead areas, are composed of total 137 and 16 species under 84 and 13 genera belonging to 22 and seven families, respectively. A total of 20, 13, 19 and 17 species respectively, occur exclusively in the homesteads of Dhaka, Gazipur, Manikganj and Tangail districts and only 22 species are common there. Poaceae with 53 species is the largest family and Cyperus with 12 species is the largest genus in monocotyledons. Pteridaceae with eight species and Pteris with three species are the better represented family and genus, respectively in pteridophytes. Total 136 species are appeared as herbs that are followed by 11 species of trees and six species of shrubs. A total of 119 species are documented as economically useful. This study identifies a number of active threats to the flora of the study area, and suggests to launch adequate management and awareness building programs for the homestead people in order to ensure effective conservstion and sustainable use and development of plant genetic resources in the homestead areas of this region.

Bangladesh J. Plant Taxon. 27(2): 407-425, 2020 (December)

Dissecting molecular evolutionary relationship of Krameriaceae inferred from phylotranscriptomic analysis

2020-12-11T10:15:24+00:00

The systematic relationships of Krameriaceae have changed considerably. The phylotranscriptomic data sets provide highly informative data for resolving deeper‐level phylogenetic relationships. The phylotranscriptomic analyses to infer evolutionary relationships of Krameriaceae in the order Zygophyllales using the Minimum Evolution, Maximum Parsimony and Maximum Likelihood methods recovered similar topology and taxon proximity. Under the Zygophyllales clade, Krameria lanceolata Torr. of the family Krameriaceae nested with Tribulus eichlerianus K.L. Wilson and Larrea tridentata (Sessé & Moc. ex DC.) Coville belonging to the family Zygophyllaceae with strong nodal support. The phylotranscriptomic analyses suggest that the family Krameriaceae is sister to Zygophyllaceae.

Bangladesh J. Plant Taxon. 27(2): 427-433, 2020 (December)

Status of occurrence of Livistona jenkinsiana Griff. in Bangladesh

2020-12-11T10:14:55+00:00

Abstract not available

Bangladesh J. Plant Taxon. 27(2): 435-438, 2020 (December)

Useful valuable plants of Maithili community in Eastern Nepal: An ethnobotanical study

2020-12-11T10:14:59+00:00

Abstract not available

Bangladesh J. Plant Taxon. 27(2): 439-446, 2020 (December)

Lichen flora of National Botanical Garden, Mirpur, Dhaka

2020-12-11T10:15:01+00:00

Abstract not available

Bangladesh J. Plant Taxon. 27(2): 447-451, 2020 (December)

First record of Leucoagaricus nivalis from Pakistan

2020-12-11T10:15:04+00:00

Abstract not available

Bangladesh J. Plant Taxon. 27(2): 453-459, 2020 (December)

Elucidating differences between two confusing Shorea contorta S. Vid and Pentacme mindanensis Foxw. species of Dipterocarpaceae via leaf morphometrics: An initial investigation

2020-12-11T10:15:07+00:00

Abstract not available

Bangladesh J. Plant Taxon. 27(2): 461-465, 2020 (December)

Agricultural product-derived carbon for energy, sensing, and environmental applications: A mini-review

2020-12-11T10:14:56+00:00

Carbon is one of the versatile materials used in modern life for human welfare. It has a wide range of applications such as drug delivery, coatings, energy generation and storage, gas separation, water purification, sensor fabrication, and catalysis. Most of the widely used carbon materials are graphene and carbon nanotubes. Nonrenewable precursors (e.g., natural gas), toxic chemicals, and complex synthesis methods are often required for their preparation, limiting their wide practical applications. Besides these, biomass-derived carbons are attractive materials as they can be prepared simply from renewable biomass. However, their practical applications' success partially depends on their properties like size, shape, porosity, and presence of heteroatoms, which can be controlled by selecting the proper type of biomass, activating agent, and preparation method. It is noted that different species of plants have different chemical compositions and textures. This mini-review summarizes our group's recent sophisticated developments in agricultural-bio-waste-derived carbonaceous materials, including nanomaterials for electrocatalytic water splitting, electrochemical sensors, supercapacitors, water splitting, water treatment, gas separation, and enhance oil recovery. This offers valuable insights and essential guidelines towards the future design of agro-waste derived carbonaceous materials in various applications.

Bangladesh J. Plant Taxon. 27(2): 467-478, 2020 (December)