⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Persicaria rigidula in version 1.1 of The Plant List.
This name is a synonym of Polygonum rigidulum .
The record derives from Tropicos which reports it as a synonym (record 50289842
) with original publication details: Leafl. Bot. Observ. Crit. 1(2): 24 24 1904.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:190863-2
.