This name is a synonym of Blackstonia acuminata subsp. aestiva (K.Malý) Zeltner.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Magyar Bot. Lapok 7: 226 1908.
This name was in version 1 of The Plant List, record kew-2676927, and has not been changed.