⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50119548, with some changes.

Evolvulus columbianus var. incanus Hallier f. is a synonym of Evolvulus tenuis subsp. longifolius (Choisy) Ooststr.

This name is a synonym of Evolvulus tenuis subsp. longifolius (Choisy) Ooststr..

The record derives from Tropicos which reports it as a synonym (record 50119548) with original publication details: Meded. Rijks-Herb. 46: 13 13 1922.