This name is a synonym of Caryopteris incana (Thunb. ex Houtt.) Miq..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 134693) with original publication details: Sp. Pl. 3: 52 1800.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:452494-1.
This name was in version 1 of The Plant List, record kew-134693.