This name is a synonym of Hylodesmum laxum subsp. lateraxum (H. Ohashi) H. Ohashi & R.R. Mill.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50120257) with original publication details: J. Jap. Bot. 70(3): 147, f. 2 1995.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:983797-1.
This name was in version 1 of The Plant List, record tro-50120257, and has not been changed.