⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-26001229, with some changes.
This name is a synonym of Oxygonum dregeanum var. canescens R. A. Grah..
The record derives from Tropicos which reports it as a synonym (record 26001229) with original publication details: Gärtn.-Bot. Briefe xxiii (1850) 100. xxiii 1850.