This name is a synonym of Erigeron trifidus Hook..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record CF8EFFF4-1CD0-4576-A107-3F31E369A084) with original publication details: Proc. Amer. Acad. Arts 16 90 1880.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:93675-2.
This name was in version 1 of The Plant List, record gcc-34082.