Planothidium suncheonmanense R.Jahn & J.Zimm. Planothidium suncheonmanense R.Jahn & J.Zimm. in Diatom Res. 32(1): 101, fig. 376-385. 2017Holotype: South Korea, ChollaNamdo, SunCheonMan, alt. 1 m, 34°52'27.84"N, 127°30'E, B.M. Suh (B: 40 0041403)