⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50114954, with some changes.

Phaeostoma rhomboidea (Douglas ex Hook.) A. Nelson is a synonym of Clarkia rhomboidea Douglas ex Hook.

This name is a synonym of Clarkia rhomboidea Douglas ex Hook..

The record derives from Tropicos which reports it as a synonym (record 50114954) with original publication details: Bot. Gaz. 52(4): 267 267 1911.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:192222-2.