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A taxonomic account of the genus Thottea Rottb.from the Andaman and Nicobar Islands along with a new record for India is presented. Of the three species recorded from the Andaman and Nicobar Islands, T. tomentosa (Blume) Ding Hou is widely distributed, T. paucifida Ding Hou is confined to Rutland of South Andaman and T. celebica Ding Hou is reported here as a new record for India.

Singh L.J.,Andaman and Nicobar Regional Center | Misra D.R.,Allahabad University
Phytomorphology: An International Journal of Plant Morphology | Year: 2015

The paper describes for the first time the comparative morphology and anatomy of aerial and terrestrial roots of Syzygium cumini Skeels with special reference to an adaptive strategy. The aerial roots differ from terrestrial roots by its ephemeral nature, reddish pink to brownish colour with plenty of lenticels, lysigenous cavity and polyarch condition. Origin and occurrence of aerial roots with plenty of lenticels, lysigenous cavity in cortex and periderm indicate high adaptive strategy under stress ecosystem for survival and sustainable growth. An adaptive significance of morphological and anatomical features in dimorphic roots has been evaluated.

Singh L.J.,Andaman and Nicobar Regional Center
Taiwania | Year: 2014

In the present study Musa indandamanensis L. J. Singh is described and illustrated as a new species from Little Andaman, the Bay Islands, India.

Jagadeesh Ram T.A.M.,Andaman and Nicobar Regional Center
Phytotaxa | Year: 2014

Four new species in Roccellaceae: Bactrospora littoralis, B. medians, Chiodecton andamanicum and Sagenidiopsis atroalba are described from the Andaman Islands, India. Bactrospora littoralis has acicular, 7-septate Patellarioides-type ascospores whereas B. medians has biclavate, 15-24-septate, Homalotropa-type ascospores. Chiodecton andamanicum has much small ascomata, thin, hyaline to pale brown hypothecium and 4-5-septate ascospores. Sagenidiopsis atroalba has a byssoid thallus with white prothallus, dark brown to blackish hypothallus and smaller ascomata, asci and ascospores. Bactrospora carolinensis (Ellis & Everh.) R.C. Harris, Opegrapha apomelana A. Massal., O. dekeselii Ertz, O. irosina Vain. and O. robusta Vain. are reported as new records for India. © 2014 Magnolia Press.

Murugan C.,Andaman and Nicobar Regional Center | Arisdason W.,Botanical Survey of India BSI
Phytotaxa | Year: 2016

Psychotria vasudevae, a new species belongs to the family Rubiaceae is described from the Little Nicobar Tribal Reserve and Katchal Island of the Union Territory of Andaman and Nicobar Islands, India. This species is closely allied to Psychotria nicobarica, by having similar leaf shape (elliptic-oblanceolate), nature of inflorescence (terminal cyme), and 5-merous flowers but from which it can be distinguished by the more slender and glabrous stems, glabrous midrib with 12 or 13 pairs of\ secondary veins, acute stipules, longer calyx lobes, externally pubescent corolla lobes, papillose stigma and globose fruits. A detailed description, illustration, distribution map, and photographic plate are provided. © 2016 Magnolia Press.

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