This name is a synonym of Microsteris gracilis (Douglas ex Hook.) Greene.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25800538) with original publication details: Pittonia 1(8): 141 1887.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:193503-2.
This name was in version 1 of The Plant List, record tro-25800538.