Holotype locality: Sungai Pusu, Selangor, Malaysia. Holotype: Ratnasabapathy No. 1201; 2 June 1979; Attached to submerged stones up to 15 cm below the surface of clear, swift, shaded waters of a small creek, about 30-45 cm wide. Private Herbarium, Department of Botany, University of Malaya 1201. Isotype: Ratnasabapathy No. 1201, 2/VI 1979, Herbarium of Faculty of Science, Kobe University.
Ratnasabapathy, M. & Kumano, S. 1982. Studies on freshwater red algae of Malaysia II. Three species of Batrachospermum from Sungai Gombak and Sungai Pusu, Selangor, West Malaysia. Japanese Journal of Phycology 30: 119–124. Reference page. : 122–124, figs 4 A–F
Guiry, M.D. & Guiry, G.M. 2017. Batrachospermum hypogynum. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed 10 December 2017.