[1] Bot Survey India, Cryptogam Unit, PO Bot Garden, Howrah 711103, India
[2] NFCCI, MACS Agharkar Res Inst, Biodivers & Palaeobiol Grp, GG Agarkar Rd, Pune 411004, Maharashtra, India
[3] Univ Kalyani, Dept Bot, Nadia 741235, W Bengal, India
[4] New York Bot Garden, Inst Systemat Bot, Bronx, NY 10458 USA