You selected Aster tomentellus Hook. & Arn. This is a synonym for:

Accepted scientific name:
Corethrogyne filaginifolia (Hook. & Arn.) Nutt. (provisionally accepted name)
Synonyms:
Aster filaginifolius Hook. & Arn. (synonym)
Aster tomentellus Hook. & Arn. (synonym)
Corethrogyne brevicula Greene (synonym)
Corethrogyne caespitosa Greene (synonym)
Corethrogyne californica DC. (synonym)
Corethrogyne flagellaris Greene (synonym)
Corethrogyne floccosa Greene (synonym)
Corethrogyne incana (Lindl.) Nutt. (synonym)
Corethrogyne lavandulacea Greene (synonym)
Corethrogyne leucophylla (Lindl. ex DC.) Menzies ex Jeps. (synonym)
Corethrogyne linifolia (H.M.Hall) Ferris (synonym)
Corethrogyne obovata Benth. (synonym)
Corethrogyne racemosa Greene (synonym)
Corethrogyne rigida (Benth.) A.Heller (synonym)
Corethrogyne scabra Greene (synonym)
Corethrogyne sessilis Greene (synonym)
Corethrogyne spathulata A.Gray (synonym)
Corethrogyne tomentella (Hook. & Arn.) Torr. & A.Gray (synonym)
Corethrogyne virgata Benth. (synonym)
Corethrogyne viscidula Greene (synonym)
Lessingia filaginifolia (Hook. & Arn.) M.A.Lane (synonym)
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Asterales
Family Asteraceae
Genus Corethrogyne
Distribution: -
Additional data: Data Providers: CONABIO, Govaerts World Compositae Checklist A-G, IPNI, Tropicos. GCC LSID: urn:lsid:compositae.org:names:FBA7AAEA-E9BB-438F-8DB4-B45B136A1521
Source database: GCC, 1 (Beta), Nov 2009
Latest taxonomic scrutiny: Flann C., 12-Aug-09
Online resource: -
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:1eeaba70-60a7-102d-be47-00304854f810:ac2010