This name is a synonym of Stangea rhizantha (A. Gray) Killip.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 33500375) with original publication details: Proc. Amer. Acad. Arts 5: 322 1862.
This name was in version 1 of The Plant List, record tro-33500375, and has not been changed.