2016, VOLUME 3 ISSUE 2Pages: 289-291
Eleocharis spiralis (Rottb.) Roem. & Schult. (Cyperaceae) An Addition to the Flora of Andaman and Nicobar Islands
Sanjay Mishra*, C.P. Vivek and Lal Ji Singh
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Eleocharis R.Br. is a cosmopolitan genus of the family Cyperaceae which comprises about 200 species distributed in tropical, subtropical, and temperate regions of the world (Gonzalez-Elizondo & Peterson 1997, Mabberley 2009). Prasad & Singh (2002) mentioned about 21 species of this genus from India. During field expedition in Andaman Islands, the authors came across an interesting species of Eleocharis from Mangroove area behind the Corbyn's cove beach in Port Blair (South Andaman). On Critical study, perusal of literature and consultation of herbarium at PBL, the specimens were identified as Eleocharis spiralis (Rottb.) Roem. & Schult., a species widely distributed in the tropical regions of the world and in Indian states Karnataka, Kerala, Maharashtra, Madhya Pradesh, Tamil Nadu and West Bengal (Cook 1996, Lakshminarasimhan 1996, Verma 2001, Prasad & Singh 2002). A thorough scrutiny of the literature (Rao 1986, Lakshminarasimhan & Rao 1996, Mathew 1998, Pandey & Diwakar 2008, Singh & Murugan 2014, Rasingam 2015) revealed that this species has so far not been reported from Andaman and Nicobar Islands. Hence, it is reported and described here as new record for Andaman and Nicobar Islands.
Fig.: Eleocharis spiralis (Rottb.) Roem. & Schult.: A, Habit; B, Cross section at distal end of culm below the spikelet; C, Culms with spikelets; D, Glume, adaxial view; E, Glume, abaxial view; F, Flower; G, Nut.