KESHARI, Nitin, Sudipta Kumar DAS, & Siba Prasad ADHIKARY 2016 (Dec. 30) Stigonema tagorum sp. nov. (Stigonemataceae, Cyanoprokaryota) from a stone monument of Santiniketan, West Bengal, India Nelumbo 58: 152-156, 2 figs., 1 table