This name is a synonym of Triodanis perfoliata subsp. biflora (Ruiz & Pav.) Lammers.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 357733) with original publication details: Mem. Torrey Bot. Club 5: 309. 1894 5: 309 1894.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:137045-2.
This name was in version 1 of The Plant List, record kew-357733.