⚠ Version 1 of The Plant List has been superseded.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 Calystegia malacophylla in version 1.1 of The Plant List.
This name is a synonym of Calystegia occidentalis var. tomentella .
The record derives from Tropicos which reports it as a synonym (record 8501518
) with original publication details: Suppl. Calif. Fl. 85 85 1968.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:43578-2
.