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 66879CB6-D9A5-41AB-9611-453B849D8352) with original publication details: 574 1843.
This name was in version 1 of The Plant List, record gcc-37361.