This name is a synonym of Parastrephia quadrangularis (Meyen) Cabrera.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 5225084E-D1D6-4B01-A963-A6C05ACFE5E9) with original publication details: Fl. Atacam. 34. t. 4. f. B 1860.
This name was in version 1 of The Plant List, record gcc-105969.