This name is a synonym of Campylosiphon congestus (C.H.Wright) Maas.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 222669) with original publication details: Bot. Jahrb. Syst. 38: 141 1906.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:126597-1.
This name was in version 1 of The Plant List, record kew-222669.