This name is a synonym of Osmorhiza mexicana Griseb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1703501) with original publication details: Contr. U.S. Natl. Herb. 8(4): 337 1905.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:267802-2.
This name was in version 1 of The Plant List, record tro-1703501.