This name is a synonym of Erigeron arenarioides (D.C.Eaton ex A.Gray) A.Gray ex Rydb..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 161772D7-9979-45FF-AD4B-382497F4BC3B) with original publication details: 647 1873.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:180670-1.
This name was in version 1 of The Plant List, record gcc-30354.