⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50108139, with some changes.
This name is a synonym of Calystegia silvatica subsp. fraterniflora (Mack. & Bush) Brummitt.
The record derives from Tropicos which reports it as a synonym (record 50108139) with original publication details: Rep. (Annual) Missouri Bot. Gard. 16: 104 104 1905.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:64536-2.