This name is a synonym of Callitriche muelleri Sond..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 31623) with original publication details: Monogr. Callitriche 59 1864.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:430016-1.
This name was in version 1 of The Plant List, record kew-31623, and has not been changed.