This name is a synonym of Pomatocalpa undulatum subsp. acuminatum (Rolfe) Watthana.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 41774) with original publication details: Bull. Misc. Inform. Kew 1913: 144 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:623388-1.
This name was in version 1 of The Plant List, record kew-41774.