Vivek Cp

• Ph.D.
• Scientist - C at Botanical Survey of India

The present papers deals with the wetland plant diversity of the Andaman and Nicobar Islands, one of the hotspots of biodiversity. These Islands chiefly comprise tropical evergreen forests including wetlands, mangroves and coral reefs. Anthropogenic disruption as well as natural disasters in the recent years made a direct effect on the steadiness o...

The morphology of microhairs on leaf surfaces of 44 Eragrostis species from India is studied using Scanning Electron Microscope (SEM) and the results are presented. Three distinct types of microhairs have been observed viz. chloridoid, panicoid and enneapogon (intermediate) and their features are tabulated

A study on the caryopses morphology of Indian Eragrostis Wolf using Light Microscope and Scanning Electron Microscope is presented. A total of 44 species have been studied. Emphasis has been given to their shape, dimensions, colour, outline in cross section and surface features. The shape varies from ovoid, obovoid, ellipsoid, oblong with truncate...

Arthraxon hispidus, collected from the evergreen forest of North Andaman, is documented as a new addition to the grass flora of the Andaman and Nicobar Islands. The voucher specimen has been deposited at PBL

Morphological features of Vanilla andamanica Rolfe [ORCHIDACEAE-VANILLOIDEAE-VANILLEAE] has been compared and found identical with Vanilla albida Blume. The same has been reduced here as heterotypic synonym. Second step lectotypification of Vanilla albida Blume and Vanilla montana Ridl. has also been done

The paper provide a detailed list of endemic grass species of India and their distributional status.This includes a total of 327 taxa belonging to 82 genera. The data has been compiled from available literature both online and offline. Of these 190 taxa are steno-endemic and 137 are holo-endemic. Inventory of species has been supplemented with dist...

Taxonomy of Habenaria andamanica Hook.f. [Orchidaceae-Orchidoideae-Orchidiinae] has been studied. It is an endemic species confined to the Andaman group of Islands. It has been assessed as ‘Endangered’ by applying the IUCN guidelines

The taxonomic revision of the genus Eragrostis Wolf in India recognizes 42 species and 5 varieties. Eragrostis tenella var. peramangalamensis is synonymised under Eragrostis tenella var. tenella. Eragrostis burmanica is reported as an addition to India from the state of Manipur. The morphology, taxonomy, nomenclatural/bibliographic citations, pheno...

A new species of the grass genus Eragrostis Wolf, E. nilgiriensis C. P. Vivek, G. V. S. Murthy & V. J. Nair sp. nov. from Nilgiri district, Tamil Nadu, India is described and illustrated. Th e species is allied to E. barrelieri , but diff ers from it mainly by the primary panicle branches not spiculate up to base, leaves not glaucous, lemma shorter...

Taxonomic history and morphological variations of wild rice, Oryza meyeriana in the Andaman and Nicobar Islands is discussed based on its earlier collections at lower elevations between 30 and 200 metres and the present record at 577 metres elevation at Saddle peak in North Andaman. Updated nomenclature, description, photo plate and present status...

Vernonia amygdalina Delile is an important plant species well-known for its medicinal as well as nutritional values. Various phytochemical studies proved that, the plant contains many bioactive compounds of different pharmacological properties, proteins, fats, fibres, amino acids, minerals, vitamins, carbohydrates, etc. Considerable disagreement pr...

ABSTRACT Dhanikhari Experimental Garden cum Arboretum of Botanical Survey of India is the only garden in the Andaman and Nicobar Islands and is a center of excellence for collection and conservation of plant species of the whole group of Islands. More than 600 plant species of different groups are conserved in demarcated sections in the garden. The...

Vanilla andamanica was described by Rolfe based on the material collected by Parkinson from Andaman Islands. On scrutiny a wide range of characters were found overlapping with Vanilla albida which is well known from Andaman Islands. Detailed study revealed that V. andamanica is conspecific with V. albida and has been reduced here as a synonym.

The paper provides a detailed list of endemic grass species of India and their distributional status. This includes a total of 327 taxa belonging to 82 genera. The data has been compiled from available literature both offline and online, of these 190 taxa are steno endemics and 137 are holo endemics. Inventory of species has been supplemented with...

A new distributional record of Hygrophila auriculata (Schumach.) Heine (Acanthaceae), from the Andaman Islands is described based on the collection from Kulsy areas of Middle Andaman Island. Its nomenclature, description, images and other relevant details have been provided.

The invasive alien species of Andaman and Nicobar Islands, India have been presented in the paper. A total of 74 species under 58 genera of 29 families have been described in brief.

M/S Bishen Singh Mahendra Pal Singh, Dehradun, India, Vol. I: 267-280,

Abstracts book

Eragrostis barrelieri Daveau (Poaceae: Chloridoideae), a species indigenous to Mediterranean to Pakistan, Macronesia to Arabain Peninsula and also introduced to Australia, Europe and South & North America is reported here as an addition to the grass Flora of India from Telangana state, India. A detailed description, notes with photographs is provid...

Chlorophytum vestitum Baker, Elatostema cuneatum Wight, Ammannia auriculata Willd. and Christisonia siamensis Craib are being reported as new distributional records for Andaman and Nicobar Islands. Detailed description, distribution and photographs of live are provided.

The habitat and IUCN threat status of Musa paramjitiana L.J. Singh (Musaceae), a critically endangered and endemic species from the Andaman & Nicobar Islands of India has been reassessed and treated as ‘Possibly Extinct’. The taxonomic distinctness of the species and possible methods for its conservation has also been discussed in detail. Pleione 1...

The recent record of Eragrostis cumingii Steud. from the Andaman and Nicobar Islands in addition to its earlier lone authentic report from Kerala in India is discussed with its present distributional status in the country. Its correct nomenclature, description, images and morphological difference with similar species, E. zeylanica Nees & Mey. are a...

Study on the grass flora of 6 Wildlife Sanctuaries of North Andaman Island was surveyed. True grasslands are absent in the study area as these regions mainly composed of Littoral and Inland kinds of forests with thick and closed canopy. Nineteen grass species under eighteen genera are included in the present study and described in detail.

Grosourdya muriculata (Rchb.f.) R. Rice (Orchidaceae) is a little known epiphytic, endemic orchid from the Andaman & Nicobar Islands in India. The present article provides the detailed taxonomy, ecology, distribution, conservation status, and photographic account of the species. The data collected from field surveys indicates that the status of the...

Mode of spikelet disarticulation in Eragrostis amabilis, E. ciliaris, E. ciliata, E. coarctata, E. deccanensis, E. riparia and E. viscosa are similar i.e., from apex downwards. Furthermore, they are interrelated in a number of morphological as well as floral characters. Hence, their circumscription and identity have considerable confusions in India...

Courtoisina cyperoides (Roxb.) Soják is reported for the first time from Andaman and Nicobar Islands. A brief description with photographs of the species is provided for easy identification.

Eriocaulon wayanadense Vivek, Swapna et K.K. Suresh, a new species from Wayanad district, Kerala is described and illustrated. The species is allied to E. elenorae Fyson, but differs by the transversely elongated seed coat cells, presence of setiform appendages on seeds and in having a black gland on each female petal.