This name is a synonym of Agastache mexicana (Kunth) Lint & Epling.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 63833) with original publication details: Nov. Gen. Sp. 2: t. 160 1818.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:446461-1.
This name was in version 1 of The Plant List, record kew-63833, and has not been changed.