Alok ChorgheMinistry of Environment Forest & Climate Change · National Museum of Natural History
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Citations since 2016
18 Research Items
Themeda saxicola is an endemic perennial grass rediscovered after laps of 67 years from the Raisili hill (type locality) and Deomali hill, from the Eastern Ghats in the Koraput district of Odisha. The detailed description along with colour photographs of the habitats, habit and floral parts are provided for easy identification of the species. In ad...
Biodiversity of tropical grasslands and savannas (tropical grassy biomes, TGBs) remains poorly documented compared with tropical forests. This is in part due to the misplaced notion of TGBs being anthropogenic forest derivatives that support negligible biodiversity and endemism. For the Indian savannas, the legacy of colonial forestry has led to th...
Nomenclature history related to the name Phacelurus speciosus has been discussed here. In absence of any original material a neotype is designated for the name P. speciosus. Additionally, the newly described species Rottboellia husainii is treated as a synonym of Phacelurus speciosus.
The typification of three Iseilema species names, I. anthephoroides, I. hackelii (≡ I. laxum) and I. holei, is addressed. For the first two names, lectotypes are designated, and for the third name, the lectotype step II process is performed.
Glyphochloa shrirangii (Poaceae), a new species from Western Ghats, Maharashtra State, India is described and illustrated. It is similar to G. forficulata, but differs mainly in having culms not tufted, a branched inflorescence, different shape of the caryopsis and in having two awns in the pedicelled spikelet.
As a part of the taxonomic revision of the genus Themeda (Poaceae: Panicoideae) in India, four names are lectotypified: T. cymbaria Hack., T. huttonenis Bor, T. laxa (Andersson) A.Camus and T. tremula (Nees ex Steud.) Hack.
Parahyparrhenia khannae, a new species of Andropogoneae (Poaceae: Andropogoneae) from the grassland of Ratlam and Jhabua districts of Madhya Pradesh, India is described and illustrated. The new species is similar to the Indian endemic species P. bellariensis in having dorsal groove in lower glume of sessile spikelet, but differs in having shorter p...
The three names Andropogon filiculmis [basionym of Capillipedium filiculme], A. huegelii [basionym of C. huegelii] and A. pteropechys [basionym of C. pteropechys] are lectotypified. Selection of lectotypes is discussed, and images of the selected specimens and data about geographic distribution are also provided.
Themeda palakkadensis, a new grass species from Kerala, India, is described and illustrated. The new species is similar to T. laxa in having pair of involucral spikelets arranged at same level and in inflorescence pattern but, differs in having densely rufous hairy sessile spikelets, lower lemma of sessile spikelet sparsely rufous hairy, lower glum...
Caralluma diffusa (Wight) N. E. Br., so far known from Kerala and Tamil Nadu, is reported from two hill ranges in Eastern Ghats of Andhra Pradesh and Odisha. Detailed description, photographs, keys and notes on its distribution is provided here.
Three species viz., Amorphophallus konkanensis Hett., S. R. Yadav & K. S. Patil, Drimia polyantha (Blatt.& McCann) Stearn and Kalanchoe bhidei T. Cooke are reported for the first time from Eastern Ghats of Andhra Pradesh.
A tuberous herb with yellow flowers collected from the grassy slopes of the Mahendragiri hills (Odisha, India) is described as a new species of Brachystelma. Morphological and molecular data are furnished in support of this novelty. © 2018 Indian Association for Angiosperm Taxonomy. All rights reserved.
Themeda odishae (Poaceae), a new species from the Mahendragiri hill ranges, Odisha (Orissa), India, is described and illustrated. It differs from T. mooneyi in shorter and hairy leaf blades, longer peduncle, length of sessile spikelet callus, number of pedicelled spikelets, and longer anthers. And from T. saxicola by its longer peduncle, number of...
Tripogon mahendragiriensis (Poaceae), a new species from Mahendragiri Hills, Eastern Ghats, Odisha (Orissa) State, India is described and illustrated. It is similar to Tripogon humilis and T. purpurascens, but differs mainly by having longer culms, leaf blades and spike, unlobed lemmas and 2 anthers which are longer. From T. purpurascens it also di...
Three species of grasses viz., Dimeria orissae, Iseilema holei and Spodiopogon rhizophorus are being reported for the first time as new distributional records to Telangana from the Kawal Tiger Reserve. Detailed description and illustrations are provided here.
Two new species of Syzygium, S. hookeri and S. sanjappaiana from the Saddle Peak National Park of North Andaman Islands, are described and illustrated. The novelties are deliberated in the light of reviewed concept on the genus Syzygium and discussed with related species of Myanmar and Sri Lanka.
A new species of Staurogyne (Acanthaceae), S. andamanica, is described and illustrated. Its affinities with S. zeylanica and conservation status are discussed.
Glochidion kingii M. V. Ramana, Sanjappa, Venu & Alok Chorghe, a new species from the scrub forests of North Andaman Islands, is described and illustrated. Its morphological similarities/dissimilarities in relation to G. rubrum Blume from the Malay Peninsula and Sumatra is discussed and information about the distribution and conservation status for...
A new species, Glochidion tirupathiense Rasingam, Chorghe, Prasanna & Sankara Rao is described from Tirumala hills of Seshachalam Biosphere Reserve, Andhra Pradesh, India. It is allied to G. ellipticum Wight and differs in ovary, style and fruit characters.
Brachystelma penchalakonense, a new species from the Nellore District of Andhra Pradesh, India is described and illustrated. This large-flowered species is related to B. maculatum.
Centotheca ganeshaiahiana M. V. Ramana, Alok Chorghe, Prasanna & Sanjappa, a new species from Saddle Peak National Park, north Andaman, Andaman and Nicobar Islands, India is described and illustrated. It is closely allied to C. uniflora Swallen, a Vietnamese species, but differs mainly in shorter culms, leaf blades and inflorescences, longer pedice...
Tripogon tirumalae, a new species of grass from the Seshachalam hill ranges, Andhra Pradesh, India, is described and illustrated. The new species differs from Tripogon sivarajanii in having ciliate membranous ligules, a shorter inflorescence, more florets, bearded lemma base, and a median awn longer than the lemma; and from Tripogon trifidus inhavi...
The studies of biodiversity have now assumed greater significance as ecologists try desperately to document global biodiversity in the face of unprecedented perturbations, habitat loss and extinction rates. With advances in science and technology, we are on the verge of understanding the natural world while at the same time in real danger of destro...