This name is a synonym of Argyrochosma dealbata (Pursh) Windham.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26608669) with original publication details: Fl. Amer. Sept. 2: 671 1814.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17065590-1.
This name was in version 1 of The Plant List, record tro-26608669.