首页|OCCURRENCE OF DIMERIA BORII (POACEAE: ANDROPOGONEAE -ISCHAEMINAE) IN EASTERN GHATS AND ITS TAXONOMIC RANK AS A SPECIES
OCCURRENCE OF DIMERIA BORII (POACEAE: ANDROPOGONEAE -ISCHAEMINAE) IN EASTERN GHATS AND ITS TAXONOMIC RANK AS A SPECIES
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During the floristic study of Bharathidasan University campus, Tiruchirappalli, Tamil Nadu, India, an interesting species of Dimeria R.Br. was collected in February 2019. On examination, the specimens were identified to be of Dimeria borii Sreek., V.J. Nair & N.C. Nair, a grass species thus far believed to be endemic to Kerala, southern Western Ghats. In the recent past, KiranRaj et al. (2015) reduced it to the status of subspecies under D. mooneyi Raizada ex Mooney, which was described on the specimens collected by Dr H.F. Mooney in 1949 from northern Eastern Ghats, southwest of Sambalpur district, Odisha, India. The WCSP (2020), Tropicos.org and other important websites on plant names are maintaining Dimeria borii as an accepted species.Dimeria is represented by 65 species (Teerawatananon et al., 2014) which are distributed from Madagascar, India, Sri Lanka, China, Korea, Indonesia, Micronesia and Australia (Bor, 1952; KiranRaj et al., 2015). Majority of these (62%) are endemic to Peninsular India (KiranRaj, 2008). But, as per WCSP (2020), there are 56 species of Dimeria found globally. Amongst them, 40 (71.43%) species are known from India. As per the latest checklist (Kellogg et al., 2020), 50 taxa of Dimeria occur in India.From Eastern Ghats, Krishnamurthy et al. (2014) enlisted 12 species of Dimeria but two of them are considered synonyms: D. acutipes Bor with D. avenacea (Retz.) C.E.C. Fisch, and D. trimenii Hook.f. with D. pubescens Hack. Recently, Pullaiah & Karuppusamy (2020) reported 11 species of Dimeria from Eastern Ghats. The difference between their species lists is D. fischeri Bor by the former authors and D. bialata C.E.C. Fisch, by the latter. But, both the works have not reported D. borii form the region ofEastern Ghats. So also, this species has not been reported for Tamil Nadu(Kabeer & Nair, 2009). It is not found in the recent flora of northern and central Tamil Nadu (Britto, 2019) which region does include Tiruchirappalli where from the present report is made.
Settipalle Gurappa、Thiruppathi Senthil Kumar、Vastavaya S. Raju
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Department of Botany, Bharathidasan University, Tiruchirappalli - 620 024, Tamil Nadu, India
Department of Botany, Kakatiya University, Warangal - 506 009, Telangana, India
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