This name is a synonym of Polycarpaea corymbosa (L.) Lam..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 6301254) with original publication details: Biblioth. Bot. Heft 89: 655. 1925. .
This name was in version 1 of The Plant List, record tro-6301254.