This name is a synonym of Cladoceras subcapitatum (K.Schum. & K.Krause) Bremek..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 39610) with original publication details: Bot. Jahrb. Syst. 39: 525 1907.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:746664-1.
This name was in version 1 of The Plant List, record kew-39610, and has not been changed.