⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-35176791, with some changes.
This name is a synonym of Ptychomnion densifolium (Brid.) A. Jaeger.
The record derives from Tropicos which reports it as a synonym (record 35176791) with original publication details: J. Proc. Linn. Soc., Bot. 4: 89 89 1859.