Dipankar Borah

Kaliabor College

A new species, Strobilanthes twangensis J.R.I.Wood & D.Borah is described from Arunachal Pradesh State in northeastern India near the border with Bhutan and Tibet. The new species is illustrated with photographs and its possible relationships with other Himalayan species are discussed.

Aristolochia assamica D. Borah & T.V. Do (Aristolochiaceae), a new species from the East Himalayas (NE India) is described and illustrated. It has purplish to greenish terete stems, brownish ovate-lanceolate bracteoles with a short stalk at base and acuminate apex, cymes with 2–15 flowers, fasciculate, on extremely short inflorescence axes, a sessi...

Introduction Non-timber forest products (NTFPs) have been an essential source for food, medicine, and handicraft products among the indigenous populations living in forested areas for millennia. Scientific research on the restoration of the importance of NTFPs and their value addition could potentially guide the development of new nutraceutical pr...

A new species, Pseuderanthemum arunachalense from eastern Himalaya, India is described and lectotype for Pseuderanthemum album, P. leptanthum and Sphinctacanthus parkinsonii are designated here. The new species is easily distinguished from its allied species, P. leptanthum by its broad oblanceolate or broad elliptic, longer leaves, longer infloresc...

A synoptical treatment of the Begonia flora of the Dibang Valley in eastern Arunachal Pradesh, India is provided, along with the descriptions of three new species. In total, eight species of Begonia are recognized as occurring in the area, of which B. atrofusca, B. lorentzonii and B. rushforthii are new to science, while B. acetosella var. hirtifol...

Repeated expeditions conducted in Arunachal Pradesh resulted in the discovery of a unique Begonia, Begonia bijantiae D.Borah, Taram & M.Hughes, belonging to Begonia sect. Diploclinium. This species is described here based on collections made in Hunli, Lower Dibang Valley District of Arunachal Pradesh. Additionally, a poorly known spe- cies, Begonia...

Henckelia monantha only known from China so far is newly recorded for the Flora of India from Arunachal Pradesh. The species is close to Henckelia briggsioides but can be differentiated by its size of the calyx tube as well as the presence and absence of ovary indumentum. Detailed description of H. monantha, live plant photographs and ecology are p...

Municipal waste is a collection of residential, industrial, institutional, commercial, construction, and demolition waste collected by a municipality and disposed at a particular site. In poor urban areas, a large proportion of leachate is discharged, untreated directly into the closest water body. The Boragaon Garbage Dump is located inside the ea...

Modernization and urbanization have profoundly impacted the way tribal rural communities interact with forests. This study sheds light on how tribal communities are adapting to the modern market economy by processing wild edible plants (WEP) into value-added food products using traditional knowledge and whatever little finance they can afford. The...

Two species of the genus Henckelia, H. forrestii (J. Anthony) D.J. Middleton & Mich. Möller and H. infundibuliformis (W. T. Wang) D. J. Middleton & Mich. Möller are recorded as new for the Flora of India from Arunachal Pradesh, India. Extended taxonomic descriptions are provided for the species accompanied by photographs and ecology.

A verdant plot of land in Nirjuli, Papum Pare district of Arunachal Pradesh, is home to an impressive array of biodiversity. Within this modest expanse, 156 species of flowering plants, representing 129 genera and 57 families thrive astoundingly. Notably, 11 of these species are only found in North East India, with five ( Amomum arunachalense, Boei...

A new species of Begonia sect. Platycentrum is described here from the moist deciduous forest of Tirthamukh near Dumboor Lake, Tripura, India. It is similar to B. scintillans, B. chindwinensis and B. thomsonii but differs in plant size, hair characters, petiole length, flowers, stamens and fruits. A description with coloured photographs and informa...

A species of the essentially Sino-Himalayan genus Didymocarpus (Gesneriaceae), D. medogensis, described in 1982 from China/SE Xizang (SE Tibet), is newly recorded for India. Since its establishment, the species remained very little known. A full documentation, including an updated description based on living plants and colour photographs of plants...

Peliosanthes maheswariana D. Borah, N. Tanaka & Taram, sp. nov. is described and illustrated from West Kameng District of Arunachal Pradesh, NE India. It is similar to P. sinica F.T.Wang & Tang in sharing such characters as a long proximally creeping stem and tufts of leaves at some intervals, but can be clearly distinguished mainly by the larger l...

Borah, D., M. Taram & M. Hughes (2023). Begonia egamii (Begoniaceae), a remarkable new species from Arunachal Pradesh, India. Candollea 78: 147–151. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2023v782a5 The new species Begonia egamii D. Borah, Taram & M. Hughes (Begoniaceae) is described based on collections made in Leparada Dis...

The status of the species Rhynchoglossum lazulinum A.S.Rao & Joseph as distinct from R. ampliatum (C.B.Clarke) B.L.Burtt is discussed. It is concluded that Rhynchoglossum lazulinum should be treated as a synonym of R. ampliatum.

Cole TCH, Borah PJ, Borah D (2023) PIPERALES পাইপাৰে ল্ছ © Cole, Borah, Borah 2023 (CC-BY), Assamese version of: COLE (2023) PIPERALES Phylogeny Poster (PipPP)

We report two taxa (Begonia medogensis and B. asperifolia) as new records for the flora of India.

Asian Woollyneck Ciconia episcopus (Boddaert, 1786), is a Near Threatened species of stork restricted to South and South East Asia. Previously considered a seasonal migrant to the plains of Assam was found successfully breeding along the northern part of Kaziranga National Park in Assam. In this note, we provide observations of Asian Woollynecks ne...

A taxonomic investigation of four genera (Rhynchoglossum, Epithema, Stauranthera and Whytockia) of the tribe Epithemateae of the family Gesneriaceae was carried out in the state of Arunachal Pradesh, India during 2016–2021. This article reports on five species, with brief notes on their habitat, along with color photographs to aid in identification...

The avian diversity of Behali Wildlife Sanctuary, an Important Bird Area IN-AS-05 (A1 and A3) is documented here. A total of 283 species of birds belonging to 21 orders, 69 families, and 194 genera were recorded. The study recorded one critically endangered species, 2 endangered species, 7 vulnerable species, 13 near threatened species and 260 spec...

Based on recent collections from Arunachal Pradesh (Northeast India), a new species of Gesneriaceae, Whytockia arunachalensis, Taram, D.Borah & Tag is described. It differs from the other species of WhytockiaW.W.S.m. by its extensive, dense and uniform indumentum over the entire plant and is closely related to the white, but smaller-flowered congen...

The study is focused to study the diversity and distribution of shrubs in the Behali Reserve Forest. A total of 46 species of shrubs belonging to 40 genera representing 25 families were documented. Rubiaceae and Lamiaceae were the dominant families. Pycnarrhena pleniflora has the highest IVI value of (48.25) followed by Coffea benghalensis (41.1)....

The new species Begonia markiana is described and illustrated. It is similar to B. cathcartii but can easily be distinguished by a lamina with a dark central spot and a densely pilose upper surface in combination with a short dorsal capsule wing. A phylogenetic analysis based on three chloroplast regions placed the new species together with other c...

Staurogyne arunachalensis (Acanthaceae), a new species from the Eastern Himalayan state Arunachal Pradesh, India, is described and illustrated.

Herein, we present the first record of Henckelia longipedicellata (B.L.Burtt) D.J.Middleton & Mich.Möller (Gesneriaceae) for the flora of India based on specimens from Mayodia, Mishmi Hills, Lower Dibang Valley district of Arunachal Pradesh, India and its rediscovery after type collection. This species is easily recognized due to its solitary flowe...

Impatiens pasighatensis D. Borah, R. Kr. Singh & Taram, a new species from the Eastern Himalayan state Arunachal Pradesh, India, is described and illustrated.

Increasing human population and various developmental activities in the Indian state of Arunachal Pradesh, which lies in one of the most bio-diverse regions of the world, has caused large-scale deforestation, pushing a large number of native tree species to the serious verge of elimination from their native forest. In such tribal-dominated landscap...

ক'ল টি. চি. এইছ., শৰ্মা জি., বৰা দি. (২০২১) বেম্বুছি- গ্ৰীষ্মমণ্ডলীয় কাষ্ঠল বাঁহৰ জাতিবৃত্ত প্ৰাচীৰপত্ৰ, Assamese version of: Cole TCH (2021) Bambuseae – Phylogeny of Tropical Woody Bamboos * আনৱিক বংশানুক্ৰমিক বিশ্লেষণ মতে সাম্ভাব্য বৃক্ষ * শাখা দৈৰ্ঘ্য ইচ্ছাপুৰ্বক, প্ৰকৃত সময় অপ্ৰকাশিত * মান‍্যতাপ্ৰাপ্ত ৭৫টা গনৰ ৬৫টা বৃক্ষ, ১০টা গন বৰ্তমানে জাত...

A new species, Begonia arunachalensis D.Borah & Wahlsteen (Begoniaceae) is described and illustrated. It is distributed in Papum Pare District of Arunachal Pradesh where it grows near streams in rock crevices. Begonia arunachalensis is similar to B. brevicaulis A.DC. but differs in its pendent fruits, number of locules and capsule wings, and longer...

ক'ল টি. চি. এইছ., শৰ্মা জি., বৰা দি. (২০২১) অৰুন্দিনেৰি- শীতোষ্ণ কাষ্ঠল বাঁহৰ জাতিবৃত্ত প্ৰাচীৰপত্ৰ COLE TCH, SARMA J, BORAH D (2021) ARUNDINARIEAE - Phylogeny of Temperate Woody Bamboos, গুও অন‍্যান‍্য (২০২০) ৰ ডিডিআৰএডি বিশ্লেষণ মতে সাম্ভাব্য বৃক্ষ

The article illustrates the present scenario of Behali Reserve Forest (BRF), the last patch of semi-evergreen forest in Biswanath district of Assam, India. It highlights the need of its upgradation to a wildlife sanctuary for better protection and surveillance. An updated checklist of mammals of BRF is also provided, along with key threatened flora...

A new species, Begonia pasighatensis D.Borah, Taram & Wahlsteen (Begoniaceae) is described and illustrated. It is easily distinguished from all other species in the section Platycentrum by its swollen, spherical ovary with two wings reduced to ridges and a long, pointing upper wing. The new species belongs to Begonia section Platycentrum and is dis...

Two new species of Henckelia from the Eastern Himalayan state Arunachal Pradesh, India, are described and illustrated. The first, Henckelia dasii Taram, D.Borah, R.Kr.Singh & Tag is allied to H. umbellata Kanthraj & K.N.Nair, the second, H. lallanii Taram, D.Borah, Tag & R.Kr.Singh is close to H. urticifolia (Buch.-Ham. ex D.Don) A.Dietr. (type spe...

Begonia, belonging to the family Begoniaceae, is one of the largest Angiosperm genera with a pan-tropical distribution. Northeastern India shows a high degree of endemism with several endemic species described from the region. Begonia dicressine, so far known from Myanmar, has been recorded for the first time in India from Changlang district of Aru...

Aristolochia L. (Aristolochiaceae) is widely used throughout Southeast Asia for the treatment of several diseases. Different species of this genus are known by similar local names in Assam. This review aims to provide up-to-date information on Aristolochia species distributed in Assam, including its traditional uses, phytochemical and pharmacologic...

The review has revealed the use of 401 plants used by three communities Nyishi, Tagin, and Hill Miri tribal communities living in the Subansiri River belt in Arunachal Pradesh, India to treat 107 aliments. The fact that with the gradual inroad of modernity in life style including the use of synthetic medicines, the uses of these medicinal plants ha...

The Yellow-throated Marten, Martes flavigula Boddaert 1785 (Mammalia: Carnivora: Mustelidae) is a wide-ranging carnivore. We observed this species during a visit to the Kopili river of Rani-Garbhanga Reserve Forest on 21 March 2017. While walking along a trail on the sides of a stream, seven individuals of Yellow throated Marten were spotted. Th...

One neotype, three second-step lectotypes and forty lectotypes are designated for forty four names in Indian Impatiens to fix the identity and to avoid the misapplication of names. Thirty nine names are synonymized, after a detailed ecological study of live plants in the field and examination of herbarium specimens including types. Six new combinat...

The present study is the result of surveys carried out during the period 2016-2021 in Biswanath district of Assam. A total of 39 orchid species divided into 26 genera are inventoried. Galeola nudifolia Loureiro is reported as a new record for the flora of the state. Coloured photographs along with a short description and a regional distribution map...

The recently rediscovered Strobilanthes tubiflos (C.B.Clarke) J.R.I.Wood is fully described for the first time. A key and photographs are provided to enable identification of similar species found in north east India. The rediscovery of S. tubiflos is discussed in the context of the botanical exploration of the region and the implications for conse...

Neopicrorhiza minima, an endemic and rare herb of Bhutan is reported for the fi rst time from India (Tawang district of Arunachal Pradesh state). The species was known only from the type localities in Bhutan since 1933. It grows in boggy soil among mosses and grasses, near water bodies of Himalayan Alpine grassland, in association with Cassiope fas...

The present study is an outcome of repeated surveys carried out during 2018-2020 in Lakhimpur district of Assam. A total of 140 orchid species divided into 62 genera have been inventoried. Gastrochilus arunachalensis A.N. Rao and Cymbidium sinense (Jackson ex Andrews) Willdenow are reported as new records for the flora of the state. A brief descrip...

A new species of Begonia sect. Platycentrum, B. kekarmonyingensis, from Kekar Monying, a place of historical significance in Arunachal Pradesh, Northeast India is illustrated and described. It is allied to B. cathcartii and B. menglianensis, and morphological similarities and differences between the species are discussed. It has been assessed as Vu...

This paper deals with the ethnobotanical research on the preparation of traditional alcoholic beverages by Ahom, Bodo, Karbi and Mishing ethnic communities of Assam, India. Along with the information on preparation, the plant species associated with the preparation of alcoholic beverages are also recorded. Field investigations were conducted to cov...

Syntype of Didymocarpus hookeri C.B.Clarke

Cremanthodium indicum D.Borah, R.Kr. Singh & Thungon (Asteraceae, Senecioneae), a new species from Eastern Himalayan state Arunachal Pradesh, India is described and illustrated. The new species is allied to Cremanthodium nobile (Franch.) Diels ex H.Lév. in having elliptic-obovate basal leaves, solitary, nodding capitula and hemispheric involucre, b...

During floristic expeditions in Khasia hills region of Meghalaya state in August 2018, a remarkable species of Didymocarpus was collected from rocky crevices at an elevation of 950 m on the way to Cherapunjee, East Khasi Hills district. After detailed study of Didymocarpus species of India, including protologues, type specimens, other herbarium spe...

Begonia limprichtii (Begoniaceae) is reported from India for the first time. It belongs to the section Platycentrum and is similar to B. thomsonii, but is overall less hairy with ovary nearly glabrous (versus villous) and upper ovary wing beaked and rounded (versus triangular).

Hoya oreogena Kerr (Apocynaceae), so far known from Thailand and Myanmar, is reported for the first time from India. Synonimization of H. salweenica Tsiang & P.T.Li and H. revolubilis Tsiang & P.T.Li has also been made. Its distribution extends to China.

Aeschynanthus lineatus Craib, previously known from Southern China, Myanmar and Thailand, is reported for the first time from India.

Reports on biodiversity of a region are the first-hand data to understand the assemblage, importance, and to follow conservation inputs. The present study was aimed to document and analyse the wetland biodiversity of Biswanath District of Assam, India. Data was collected from 27 wetland habitats from 2015-2019. A total of 235 taxa were recorded, of...

The present study was carried out in Behali Reserve Forest, a semi-evergreen forest of Assam, India to record and analyze the woody species diversity and community characteristics using random sampling. Altogether, 35 quadrats (20 m × 20 m) were randomly established and studied from August 2018 to April 2019 spreading across nine study sites. A tot...

Amomum arunachalense Hareesh & M. Sabu sp. nova (Zingiberaceae) is described from Arunachal Pradesh, northeastern India. It is similar to A. maximum, but differs from the latter by having a white rhizome with a pale brown center, an entire ligule, a labellum without lateral staminodes, an obtuse stamen crest and a non-winged, foveolate fruit. A det...

Mishing community is one of the major tribal communities residing in Northeastern India. They have adapted their lifestyle with one of the adverse conditions and their reliance on plants for food and medicine is widely prevalent. This article presents an explorative ethnobotanical survey on documentation of plants used by the Mishing community of A...

The present paper was aimed to study the flora and composition of the herbaceous species in Behali Reserve Forest (Assam, India). For this purpose, in 2019-2020, we established nine study sites with various number of 1 × 1 m study plots per each. In total, 77 plant taxa belonging to 71 genera and 33 families were recorded. The families Acanthaceae...

The investigations of flora and fauna in Protected Areas provide important contributions to the knowledge on the status of unmanaged natural ecosystems. In 2017-2019, we studied the vascular plant flora of Behali Reserve Forest (Assam, India). The reserve forest covers 140.16 km 2 area of semi-evergreen forest. We investigated the taxonomic composi...

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...

We present the first record of Beccarinda tonkinensis (Pellegr.) B.L. Burtt (Gesneriaceae) for India on the basis of specimens collected in Kerang and Yosing, Siang district of Arunachal Pradesh, India. The species is easily recognized from its congeners by its decumbent stem, basal leaves, axillary cymes and broadly ovate bracts. Until now, Beccar...

Behali Reserve Forest (BRF) is one of the last patches of intact forests preserved in the Biswanath district of Assam – the second largest state among the eight northeast Indian states. Behali Forest was declared a reserve forest in 1917. It has a total area of about 140 km2. This short chapter presents species richness and unique elements of the f...

The present study was aimed to document the traditional ethnobotanical knowledge in Komkar-Adi Biocultural Landscape of Upper Siang District in Arunachal Pradesh (Eastern Himalaya), India. Data was collected from three villages of Geku circle, Upper Siang District between the year 2016-2019, covering more than 50% of the total households using semi...

The hemi-parasitic genus Pedicularis Linnaeus (1753: 607) contains about 671 species, distributed mainly in temperate to tropical mountains and subarctic area of the world, and is the largest genus of the family Orobanchaceae (POWO 2020, Borah et al. 2020, Garg et al. 2020). Presently, 86 species, 13 subspecies and 9 varieties are known from India,...

Four species of Pedicularis L., namely P. longiflora var. tubiformis (Klotzsch) P.C. Tsoong, P. megalantha D. Don, P. pantlingii Prain and P. trichoglossa Hook. f. are reported here as new records for the flora of Arunachal Pradesh state. The present collection of P. pantlingii from Arunachal Pradesh, now becomes the second distributional locality...

Based on detailed study of type specimens, other herbarium specimens, field study and relevant literature, the recently described new species Henckelia collegii-sancti-thomasii A. Joe, D. Borah, Taram & Sandhya is treated here as a synonym of little known, narrow endemic species H. hookeri (C.B. Clarke) D.J. Middleton & Mich. Möller of Northeast In...

Henckelia siangensis, a new species from Arunachal Pradesh of Northeast India, is described and illustrated here. The new species is remarkably different from all other allied species by its 5-winged calyx and elliptic-ovate calyx segments. It superficially resembles H. calva in glabrous stem and petioles, but differs from it in having persistent b...

Boeica arunachalensis, a species new to the science from eastern Himalayan state of India, Arunachal Pradesh is described. Coloured photo plate and micrograph of new species and its allied species B. fulva Clarke are provided. Identity of B. griffithii Clarke is discussed and lectotype are designated here for B. filiformis Clarke, B. fulva Clarke,...

Peliosanthes macrophylla var. assamensis, a new variety from Behali Reserve Forest in Assam, Northeast India, is described with accompanying photos and relevant taxonomic data. It differs from var. macrophylla from Arunachal Pradesh and Sikkim, Northeast India, mainly by the staminal corona internally protruding near the middle (vs internally uprig...

Occurrence of Saurauia sinohirsuta J. Q. Li & Soejarto (Actinidiaceae) is reported for the first time from Arunachal Pradesh, India.

Clerodendrum hexangularis, described from Manas National Park of Assam is synonymized under Rotheca serrata

While working on the floristic diversity of Eastern Himalayan state Arunachal Pradesh, India a remarkable species of Pseudobartsia was collected from Bomdila, West Kameng district at about 2500 m a.s.l. After a critical study including a comparison with its protologue and type specimens, it is identified as Pseudobartsia glandulosa, a little known,...

The new species Begonia oyuniae M.Taram & N.Krishna is described from Arunachal Pradesh. It belongs to Begonia sect. Monophyllon A.DC., which is a new sectional record for India. Begonia oyuniae shares the ability to produce plantlets at the leaf tip with B. vagans Craib (Begonia sect. Alicida C.B.Clarke) and B. elisabethae Kiew (Begonia sect. Parv...

A new species of Rhynchotechum (Gesneriaceae), Rhynchotechum nirijuliense Taram & D.Borah, is described from Nirijuli of Papum Pare district in Arunachal Pradesh, Northeast India. The new species is compared to Rhynchotechum ellipticum and R. calycinum. A detailed description, colour photographs and notes on the distribution and ecology of the new...