This name is a synonym of Salix arbusculoides f. glabra (Andersson) B. Boivin.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50121074) with original publication details: Monogr. Salix 148 1867.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:225594-2.
This name was in version 1 of The Plant List, record tro-50121074.