This name is a synonym of Laelia anceps subsp. dawsonii (J.Anderson) Rolfe.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 106906) with original publication details: Orchid Rev. 30: 10 1922.
This name was in version 1 of The Plant List, record kew-106906.