⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2409979, with some changes.
This name is a synonym of Polycarpon tetraphyllum subsp. alsinifolium (Biv.) Ball.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Prodr. 3: 376 1828.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:151627-3.