⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-455288, with some changes.

Hedyotis nigricans var. rigidiuscula (A.Gray) Shinners is a synonym of Houstonia purpurea var. purpurea

This name is a synonym of Houstonia purpurea var. purpurea .

The record derives from WCSP which reports it as a synonym (record 455288) with original publication details: Field & Lab. 17: 168 1949.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:1151374-2.