This name is a synonym of Trematodon paradoxus var. nanus (Welw. & Duby) Sim.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35120333) with original publication details: Flora 69: 508 1886.
This name was in version 1 of The Plant List, record tro-35120333.