You selected Aster divaricatus (Nutt.) Torr. & A.Gray. This is a synonym for:

Accepted scientific name:
Symphyotrichum divaricatum (Nutt.) G.L.Nesom (provisionally accepted name)
Synonyms:
Aster divaricatus (Nutt.) Torr. & A.Gray (synonym)
Aster neomexicanus Wooton & Standl. (synonym)
Tripolium divaricatum Nutt. (synonym)
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Asterales
Family Asteraceae
Genus Symphyotrichum
Distribution: -
Additional data: Data Providers: CONABIO, Govaerts World Compositae Checklist A-G, IPNI, Tropicos. GCC LSID: urn:lsid:compositae.org:names:EEEB6BE0-AD10-4406-9A85-CFFA68BBD619
Source database: GCC, 1 (Beta), Nov 2009
Latest taxonomic scrutiny: Flann C., 16-Aug-09
Online resource: -
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:1f6a940c-60a7-102d-be47-00304854f810:ac2010