This name is a synonym.
* Campanula biflora Ruiz & Pav., Fl. Peruv. 2: 55 (1799).
Specularia biflora (Ruiz & Pav.) Fisch. & C.A.Mey., Index Seminum (LE, Petropolitanus) 1: 17 (1835).
Legousia biflora (Ruiz & Pav.) Britton, Mem. Torrey Bot. Club 5: 309 (1894).
Triodanis biflora (Ruiz & Pav.) Greene, Man. Bot. San Francisco: 230 (1894).
Triodanis perfoliata var. biflora (Ruiz & Pav.) T.R.Bradley, Brittonia 27: 114 (1975).
Triodanis perfoliata subsp. biflora (Ruiz & Pav.) Lammers, Novon 16: 72 (2006).
* Basionym/Replaced Synonym