An Appraisal of Genus Riccia in India with a Note on Diversity and Distribution of Species

Abstract

A review of Indian Riccia’s has been made and 36 valid species are accepted. 12 species viz., R. attenuata, R. ciliata, R. crispatula, R. crozalsii, R. curtisii, R. glauca, R. haskarliana, R. hirta, R. mangalorica, R. perssonii, R. stricta and R. warnstorfii are rare and found in restricted pockets of the country. Except Riccia abuensis and R. fluitans (aquatic species) all are terrestrial. Riccia poihaiana A.E.D.Daniels & P.Daniel is proposed to place under synonymy of R. billardieri Mont. & Nees. The occurrence of Riccia squamata, R. duplex and R. dictyospora recorded in Indian bryoflora is treated here doubtful. The notes on Riccia lucknowensis A.Gupta &Udar and R. nagalandensis D.D.Pant & Bhowmik ex S.K.Chaturv. & S.Chaturv. (both invalid species) are given. The taxonomy, diversity and distribution and notes wherever required are provided.

Taxonomic notes and range extension of several complex thalloid liverworts

“…Distribution: Riccia billardierei is mainly known in tropical regions. The known range includes Australia ( Na-Thalang 1980), Bangladesh ( Sahu & Asthana 2015), China (present study), India ( Singh 2014), Indonesia ( Meijer 1958), Nepal ( Sahu & Asthana 2015), Pakistan ( Singh et al 2010), Philippines ( Tan & Engel 1986), Sri Lanka ( Long & Rubasinghe 2014), Thailand ( Lai et al 2008) and Vietnam ( Jovet-Ast 2000). In China, it was discovered only in Hainan and Yunnan.…”

Contribution to the Bryophyte Flora of New Caledonia IV. Species New to the Country, New Localities Together with Taxonomic Notes

“…Riccia hasskarliana was hitherto known from Indonesia (Java, Kalimantan, Sumatra) (Meijer 1958) and India (Singh 2014).…”