
Ritesh Kumar ChoudharyAgharkar Research Institute
Ritesh Kumar Choudhary
M.Sc., B.Ed., Ph.D.
About
139
Publications
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Introduction
Ritesh Kumar Choudhary currently works at the Biodiversity & Palaeobiology Group, Agharkar Research Institute. Ritesh does research in Plant Systematics (Taxonomy). Their current projects are 'Molecular Phylogeny of the genus Eriocaulon L. of Western Ghats, India' and 'Understanding the morphological evolution and ecological diversification of the forest-dwelling capers from Indian subcontinent using molecular phylogenetic tools.'
Additional affiliations
November 2013 - present
April 2009 - March 2010
February 2004 - January 2009
Education
February 2004 - February 2009
Rajiv Gandhi University, Itanagar, India
Field of study
- Plant Taxonomy
Publications
Publications (139)
Globba zwegabinensis sp. nov., under sect. Haplanthera (Zingiberaceae) is newly described and illustrated from the Zwegabin Mountain of Kayin State in southern Myanmar. G. zwegabinensis is morphologically allied to G. sessiliflora and G. lithophila but differs in having the leaves with a foetid smell, glabrous blade, completely yellow filament, gla...
Explore the intricate world of Smilacaceae in the Indian Subcontinent through an in-depth examination of 36 taxa within this botanical family. This meticulously crafted guide offers a wealth of information to cater to a diverse audience.
Key Features:
● Taxonomic descriptions, accompanied by vivid photo-plates/ line drawings/ herbarium images for e...
The genus Smilax (Smilacaceae), commonly known as Sarsaparilla, comprises about 262 species with numerous medicinal and economic importance. Due to considerable morphological similarity, Smilax has been recognized as a taxonomically challenging group. In this study, we conducted a comprehensive analysis of the genomic architecture and nucleotide va...
Smilax is the sole genus of the family Smilacaceae, represented by 36 taxa in the Indian subcontinent. The taxonomy of the genus has been challenging due to its dioecious nature and substantial inter- and intra-specific variations. With an aim to clarify and streamline the nomenclature of Smilax species and resolve long-standing taxonomic ambiguiti...
The typification issues related to the names of two Nothapodytes species are addressed. A second step lectotype is designated for the name N. montana while a neotype is designated for the name Premna nimmoniana, basionym of N. nimmoniana.
Smilax turbans, an endemic species from Arunachal Pradesh, India, was last collected in 1928 by F. Kingdon-Ward, has not been collected since then. During our recent fieldwork, we found a population in Kurung Kumey district, about 500 km from the presumable type collection, after more than 95 years of its last known collection. To facilitate its id...
Cleomaceae is a family that includes 18 genera distributed worldwide in tropical and temperate regions. Cleome L. is the largest genus having 207 species, widely distributed in tropical and subtropical regions (POWO 2019). In Vietnam, the genus is represented by four species Cleome rutidosperma DC., C. houtteana Schltdl., C. viscosa L. and C. gynan...
Musa is one of the most economically important genera distributed throughout the globe. Many species of this genus are narrowly endemic to India and are used as a food source or herbal medicines by the tribal communities. One of the economically
important species, Musa indandamanensis, also known as a sweet banana with orange pulp, is confined to t...
Capparis is the largest genus of the family Capparaceae, represented by 142 species in the tropics and subtropics of the Old World. Despite being one of the medicinally and economically important genera with its unique distribution pattern, the evolutionary history of Capparis remained unexplored. Moreover, the phylogenetic relationships, origin, d...
Clerodendrum ervatamioides C. Y. Wu was described in 1977 with its type locality in Yunnan, China. During our floristic investigation in the Muong Nhe Nature Reserve of Vietnam of Dien Bien province and in the Muong Te district of the Lai Chau province, we collected several specimens of Clerodendrum ervatamioides, marking the first record of its oc...
Canscora ciathula (gentianaceae) was described by Averyanov from Laos. examination of the type specimens revealed that it is conspecific with Phyllocyclus petelotii (Merrill) thiv and reduced here to synonymy.
Amblovenatum immersum (Blume) Mazumdar (Thelypteridaceae) is newly recorded in Vietnam. It is similar to A. terminans (Panigrahi) J. P. Roux in its woody rhi-zome and cristate spores but differs in terms of its plant size, lobed pinnae, lobed segments, veinlets, sori and indusia. It was previously found to exist in China, India, Indonesia, Malay-si...
Capparis with about 142 taxa is the largest genus in the angiosperm family Cappa-
raceae, and is of high medicinal and economic importance. Several taxa such as C.
cartilaginea, C. cleghornii, C. incanescens, C. moonii, C. roxburghii, C. sepiaria, C.
spinosa and C. spinosa subsp. himalayensis are difficult to distinguish from each other
based on m...
Cosmianthemum melinhensis, a new species of Acanthaceae is described and illustrated from northern Vietnam. It is morphologically allied to C. guangxiense, C. knoxiifolium, and C. viriduliflorum but differs in the habit, shape and trichomes of the leaves, stem, bracts, bracteole, corolla and fruits. This species is assessed as “Vulnerable” (VU) acc...
The study presents leaf anatomy of 30 species of Eriocaulon (Eriocaulaceae) from India and Brazil. Observation of the morphological traits and multivariate analyses were carried out to investigate the correlation between life cycle, life form, and leaf anatomical features of Eriocaulon species. The leaf anatomical characters of amphibian and submer...
The genus Eriocaulon (Eriocaulaceae, also known as pipeworts) is represented by 111 taxa in India which is around 1/4th of the species found around the world. The genus exhibits highest endemism in the country with most of the species distributed in Western Ghats. It is considered as Taxonomist’s nightmare due to its minute floral parts, high intra...
Lectotypes are designated here for the following nine validly published names: Jasminum alongense , J. anodontum , J. eberhardtii , J. harmandianum , J. lang , J. laxiflorum , J. pierreanum , J. rufohirtum , and J. sinense . Jasminum lang is reinstated as a distinct species.
Tripterygium wilfordii Hook.f. (Celastraceae), collected from Phia Oac-Phia Den National Park of Vietnam, is reported here as a new generic and species record for the flora of Vietnam. The genus Tripterygium differs from other genera of Celastraceae by its samara fruits, which become three-winged at maturity, and a scandent shrub. Taxonomic notes,...
The present work is an effort to untangle the taxonomy of Phlogacanthus pulcherrimus, a poorly known species reported here for the first time for the flora of Vietnam. Fresh specimens of this species were collected from three localities in Southern Vietnam. They provided new insights to its appearance and morphology. Phlogacanthus pulcherrimus can...
The present study is the first-ever comprehensive molecular systematic study of Indian Eriocaulon species based on the critical appraisal of the freshly collected 552 accessions of 66 Eriocaulon spp. The genus Eriocaulon L. (Eriocaulaceae) is one of the most diverse genera of Eriocaulaceae and around one-quarter of the world’s representation is in...
Erratum Erratum: Maurya, S., Datar, M.N. & Choudhary, R.K. (2021) Lectotypification of four names in the genus Capparis (Capparaceae). Phytotaxa 500 (2): 125-132. In our paper entitled "Lectotypification of four names in the genus Capparis (Capparaceae) (Phytotaxa 500(2): 125-132), we designated lectotype for Capparis grandis L.f. with three other...
Ischaemum amboliense (Poaceae, Andropogoneae), a new species of Muraina grass, is described and illustrated here. The new species is closely allied to I. travancorense but differs from it in having annual habit and erect posture, culm with sparsely hairy nodes, well-exerted racemes, lower glumes of sessile spikelets with 3-4 side nodules without ri...
Rungia gialaiensis, a new species endemic to Gia Lai Province in the Central Highlands of Vietnam, is described and illustrated. It is morphologically allied to R. daklakensis and R. khasiana, but differs from both in its stoloniferous branches growing from leaf axils.
The genus Capparis Linnaeus (1753: 503) belongs to the family Capparaceae and is distributed in tropics and subtropics
of the Old World, comprising 141 species (POWO 2021). Jacobs (1965) studied the genus from Indus to pacific
land and classified it under four formal sections viz. Capparis, Sodada, Monostichocalyx, and Busbeckea. Thereafter,
severa...
Pseudoxytenanthera madhavii a new species of bamboo, locally known as Mes and traditionally utilized in the northern Western Ghats of India, is described and illustrated. The new species can be distinguished from its allied species, P. stocksii by longer and shining culms, young culms covered with white powdery scuff, undulating culm blades, fresh...
The genus Limonium , commonly known as Sea Lavenders, is one of the most species-rich genera of the family Plumbaginaceae. In this study, two new plastomes for the genus Limonium , viz. L. tetragonum and L. bicolor , were sequenced and compared to available Limonium plastomes, viz. L. aureum and L. tenellum , to understand the gene content and stru...
Present communication provides an overview of molecular systematic studies done in India with a brief discussion on the changing perspectives of plant taxonomy. Despite a rich diversity and high degree of endemism in the country, the evolutionary lineages of many of the plant groups are poorly understood. Cucurbitaceae, Eriocaulaceae, Leguminosae,...
The present study is an outcome of floristic surveys of East Siang District of Arunachal Pradesh, carried out during 2016–2019, and also a compilation of earlier published reports. Vegetation analysis of this area along with a checklist of 508 taxa is presented. A total of 503 species, one subspecies and four varieties of native flowering plants be...
In spite of availability of several plastomes representing different tribes of Plantaginaceae, sparse attempts have been made to understand the plastome structure, evolution, and phylogenomics. In the present study, we have made an effort to understand the gene content and plastome evolution in the family Plantaginaceae using the newly generated pl...
Ischaemum janarthanamii S.A. Bokil, Datar & R.K. Choudhary, a new species belonging to family Poaceae, subfamily Andropogoneae is described and illustrated. It is morphologically similar to I. dalzellii and I. semisagittatum but differs from them in having geniculately ascending culms, lower glume of sessile spikelets winged on both sides, apex of...
Phlogacanthus geoffrayi is reported here as a newly recorded species from Vietnam. This species is morphologically allied to Phlogacanthus turgidus but differs in having a significantly bigger calyx and staminodes. The specimens were collected from Song Cau district of Phu Yen province. Description, line-drawing, photographs, and notes on ecology a...
Capparis kbangensis Sy & D.V. Hai, a new species from Kbang District, Gia Lai Province, Vietnam, is described and illustrated. The new species is morphologically similar to Capparis versicolor but differs by several characters such as emarginate leaf apex, hairy margin of sepals, smaller fruits, and fewer seeds per fruit. Its ecology and conservati...
The Western Ghats of India support a significant amount of biodiversity despite heavy habitat loss. The northern part of this biodiversity hot-spot, along with Konkan, is considerably different from its southern and central counterparts on account of lesser precipitation and extended dry season. Though this region has been floristically surveyed we...
Examination of type specimens has shown that Primula subansirica G.D. Pal is a Gesneriad and conspecific with Beccarinda cordifolia (Anthony) B.L. Burtt (Gesneriaceae), thus a reduction is made and a new synonymy is proposed.
The genus Capparis is well known for its medicinal properties and many species of the genus are widely used in crude drug preparation. The present study is an effort to understand the inter and intraspecific plastome variations within genus Capparis using two newly sequenced plastomes. Plastome representatives from four taxa of Capparis were compar...
Abstract
The genus Capparis is well known for its medicinal properties and many species of the genus are widely used in crude drug
preparation. The present study is an effort to understand the inter and intraspecific plastome variations within genus Capparis
using two newly sequenced plastomes. Plastome representatives from four taxa of Capparis we...
While revising the genus Dillenia Linnaeus (1753: 535) for Malaysia, Hoogland (1952) proposed the new combination, Dillenia mansonii (Gage 1906: 73) Hoogland (1952: 83) by transferring Wormia mansoni Gage (1906: 73) (Wormia mansonii). Gage (1906) in the protologue of W. mansonii cited the specimen examined as ‘In ripis fluminis Yunzalin, prope conf...
The book provides a detailed account of 35 taxa belonging to genus Capparis L. in India along with their taxonomic descriptions, key, photo-plates, herbarium images, economic and medicinal usage, distribution maps with point locations along with their local names in major Indian languages.
we are designating a lectotype for each of these two names in Smithsonia viz. S. viridiflora (Dalzell) C.J.Saldanha and S. maculata (Dalzell) C.J. Saldanha in accordance with Articles 9.3 and 9.12 of Shenzhen Code (Turland et al. 2018).
Spiradiclis hainanensis H.S. Lo and S. purpureocaerulea H.S. Lo (Rubiaceae) are reported as new additions to the flora of Vietnam. In Vietnam, the genus Spiradiclis has been represented by only two species, S. leptobotrya (Drake) Pit. and S. caespitosa Blume. During our field investigations in the Lao Cai and Ninh Binh Provinces of northern Vietnam...
In this study, we report the plastome of Eriocaulon decemflorum (Eriocaulaceae) and make an effort to understand the genome evolution, structural rearrangements and gene content of the order Poales by comparing it with other available plastomes. The size of complete E. decemflorum plastome is 151,671 bp with an LSC (81,477bp), SSC (17,180bp) and a...
Two species of Leycesteria, L. gracilis (Kurz) Airy Shaw and L. formosa Wall. (Caprifoliaceae), from the Lao Cai and Yen Bai Provinces are reported here as a new generic record for the flora of Vietnam. During floristic surveys of northern Vietnam, L. gracilis and L. Formosa were encountered. A critical morphological study of all the collected spec...
Eriocaulon karaavalense Darsh., R.K. Choudhary, Datar, & G.R.Rao (Eriocaulaceae) is described and illustrated as a new species from the Western Ghats, India. It is closely similar to E. kanarense but differs from it by number of peduncles, linear lanceolate leaves, glandular female petals, non-beaked seeds and ribbon shaped seed appendages. Eriocau...
Here we present revised taxonomy, morphological variation and geographical distribution of Jasminum pedunculatum Gagnep. (Oleaceae). Type material of this species was analyzed and a specimen from P (P00644297) was designated as a lectotype. Jasminum albicalyx Kobuski is reduced to a taxonomic synonym of J. pedunculatum on the basis of morphological...
Mericarp morphology of 24 taxa belonging to nine genera of the tribe Selineae (Family: Apiaceae) in Korea was studied by Scanning Electron Microscopy. UPGMA and NMDS analyses were performed based on 12 morphological characters. The mericarp surface characters like mericarp shape, rib number and shape, surface pattern, surface appendages and mericar...
Eriocaulon Linnaeus (1753: 87) is the largest genus of the family Eriocaulaceae Martinov (1820: 237). It is distributed in tropical and subtropical regions of the world and represented by ca. 471 species (Govaerts 2018). Ansari & Balakrishnan (2009) recorded 85 species of the genus from India. Lately, several new species have been published and the...
Ethnopharmacological relevance
The ethnobotanical survey was carried out in the Bac Huong Hoa Nature Reserve (BHHNR), Vietnam. The Van Kieu ethnic group, the inhabitant of Nature Reserve, is rich in knowledge about the medicinal plants found in the Nature Reserve. However, their knowledge is less documented.
Aim of the study
The present study was...
In the present paper, taxonomic notes on the genus Phlogacanthus from Vietnam are provided. A new combination, P. datii, is proposed. A lectotype is designated for its basionym Cystacanthus datii. In addition, Phlogacanthus paniculatus is reported
as a newly recorded species from Vietnam. Descriptions, illustrations, photographs and ecological note...
The genus Ischaemum Linnaeus (1753: 1049) was established with two species, viz. I. muticum Linnaeus (1753: 1049) and I. aristatum Linnaeus (1753: 1049). At present, the genus comprises ca. 71 species distributed in warm and tropical regions of the world (Mabberley 2008). It is represented by 56 species in India of which 43 species are endemic (Sri...
Rungia khoii, a new species from Vietnam, is described and illustrated.
Capparis bachii Sy, R.K. Choudhary & Joongku Lee (Capparaceae) is described and illustrated based on a collection from Dong Nai Province, southern Vietnam. It is morphologically similar to C. diffusa but differs from it by having numerous flowers per umbel, numerous stamens per flower, larger gynophore, cordate leaf base, and presence of hairs on l...
Capparis pubifolia B. S. Sun is reported here as a new addition to the flora of Vietnam. It is morphologically
allied to C. sikkimensis Kurz but differs due to the gray-yellow color of the hair of the twigs, having more secondary veins on the leaf, trichomes on both surfaces of the petal, and a globose shape of the fruit.
Thus far, it was only repo...
Eriocaulon parvicephalum, a new species of Eriocaulaceae from Western Ghats of India, is described and illustrated. The new species is closely allied with E. palghatense but differs in having acuminate spathe lobes, eglandular petals in the male flower, and two rectangular seed coat appendages per cell. Phylogenetic analyses using the ITS region of...
Two Jasminum taxa i.e. J. hongshuihoense and Jasminum laurifolium var. brachylobum are reported as a new record for the flora of Vietnam. J. hongshuihoense was hitherto known as endemic to China. It differs from the closely related species J. eberhardtii in having more number (4-10) of primary veins and lesser (5-8) calyx lobes. J. laurifolium var....
p>Plagiopteron Griff. (Celastraceae), collected from Bac Giang Province of Vietnam is reported here as a new generic record for the flora of Vietnam. It is supposedly an early derived member of the subfamily Hippocrateoideae (composed of tribes Campylostemoneae and Hippocrateeae), within Hippocrateaceae. The genus differs from other members of Cela...
Capparis dongvanensis (Capparaceae) is described as a new species and illustrated from Ha Giang Province of Vietnam. It is morphologically similar to C. lanceolaris and C. fengii, but differs in the number of flowers on peduncles, length of spine and petiole, apex of the leaf, type of inflorescence, petal color, cylindrical ovary without any beak,...
Jasminum vietnamense B.H. Quang & Joongku Lee, sp. nova (Oleaceae) from Quang Nam province of Vietnam is described and illustrated. It is morphologically similar to J. adenophyllum, J. fuchsiifolium and J. pierranum, but differs from them by having a comparatively smaller calyx tube, absence of domatia at vein axils of the leaf, and by considerably...
The Vietnamese occurrence of Stephania subpeltata H. S. Lo (Menispermaceae) is reported here forthe first time. It is morphologically allied to S. japonica but differs in having subpeltate, ovate deltoid or broadlydeltoid to subdeltoid leaves, shorter petiole, fewer leaf veins, conspicuously pedicellate umbelliform cymeswhich are seldom compound, a...
Ischaemum agharkarii, a new species of Poaceae from the Northern Western Ghats of India is described and illustrated here. It is closely similar to two Indian endemic species, I. travancorense and I. santapaui but differs in having hairy first node, presence of side nodules on lower glume of both sessile and pedicelled spikelets, band of hairs on v...
A new species of Goniothalamus (Blume) Hook.f. & Thomson (Annonaceae), G. banii B. H. Quang, R. K. Choudhary & V.T. Chinh, is described and illustrated from Thanh Hoa Province, Vietnam. This species shows morphological similarities with G. uvarioides King and G. donnaiensis Finet & Gagnep. but is differentiated by having 22-30 (or more) secondary v...
Justicia kampotiana Benoist (쥐꼬리망초과)를 베트남 미기록종으로 보고한다. 본 종은 유사종인 J. ingrata Benoist와 달리 외화관에 털이있으며, 화통은 판연 보다 약간 길고 화병보다는 아주 짧다. 종 동정을 위한 기재, 그림도해 및 컬러사진과 함께 본 종과 유사종의 비교를 위한 검색형질들을 제시하였다.
주요어: Justicia kampotiana, 쥐꼬리망초과, 미기록종, 베트남
Justicia kampotiana Benoist (Acanthaceae) is reported as a new record for the flora of Vietnam. This species differ...
Not available.Bangladesh J. Plant Taxon. 22(2): 147-149, 2015 (December)
Thuong, S. D., Bach, T. T., Choudhary, R. K., Tucker, G. C., Cornejo, X. & Lee, J. 2013: Capparis daknongensis (Capparaceae), a new species from Vietnam. - Ann. Bot Fennici 50: 99-102. Capparis daknongensis D.T. Sy, G.C. Tucker, Cornejo & Joongku Lee, a new species of Capparaceae from Dak Nong province, Vietnam, is described and illustrated. It is...
http://www.annbot.net/PDF/anb52-free/219-223-36060-free.pdf
The genus Trigonella includes the widely
cultivated T. foenum-graecum and a number of other
medicinal and aromatic plant species distributed around
the Mediterranean region. Sectional delimitation of
Trigonella species is still based on morphology and
interspecific relationships within the genus are not yet
sufficiently resolved. Phylogenetic relat...
Prismatomeris Thwaites is a small genus consisting of 15 species in the family Rubiaceae and is distributed throughout Asia (Mabberley, 2008; Chen and Taylor, 2011). In Viet Nam, the genus is represented by four species (Ho, 2000; Tran, 2005). While exploring the flora of HonBa Nature Reserve in Khan Hoa Province of the country, the authors came ac...
http://www.korea.net/FILE/pdfdata/2014/12/FloristicDiversityofHonBaNatureReserve_en_1208.pdf
http://www.banglajol.info/index.php/BJPT/article/viewFile/21361/14673
We report a new record of Jasminum albicalyx Kobuski in Vietnam. The plant differs from J.
pedunculatum Gagnep., a closely related taxon, by foliar and floral characters such as less number of lateral
veins, presence of domatia at vein axils on the abaxial surface of leaf, smaller bracts, white calyx having more
number of lobes and less number of l...