This name is a synonym of Mitragyna speciosa (Korth.) Havil..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 197668) with original publication details: Verh. Nat. Gesch. Ned. Bezitt., Bot. 160 1842.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:767150-1.
This name was in version 1 of The Plant List, record kew-197668, and has not been changed.