distribution map
Phreatia potamophila Schltr., drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 330, fig. 1273
Phreatia potamophila Schltr., herbarium sheet, Schlechter 16765 (isotype specimen BO)
Phreatia potamophila Schltr., herbarium sheet, Schlechter 18070 (isotype specimen BO)