You selected Acmella occidentalis (Willd.) Rich. This is a synonym for:

Accepted scientific name:
Acmella oppositifolia (Lam.) R.K.Jansen (provisionally accepted name)
Synonyms:
Acmella mutisii (Kunth) Cass. (synonym)
Acmella occidentalis (Willd.) Rich. (synonym)
Anthemis americana Mutis ex L. (synonym)
Anthemis occidentalis Willd. (synonym)
Anthemis oppositifolia Lam. (synonym)
Spilanthes americana (L.f.) Hieron. (synonym)
Spilanthes disciformis B.L.Rob. (synonym)
Spilanthes mutisii Kunth (synonym)
Spilanthes phaneractis (Greenm.) A.H.Moore (synonym)
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Asterales
Family Asteraceae
Genus Acmella
Distribution: -
Additional data: Data Providers: Biological Diversity of the Guiana Shield, CONABIO, LCR Editor, Govaerts World Compositae Checklist A-G, IPNI, Panama Checklist, MesoAmericana, Tropicos, Colombia. GCC LSID: urn:lsid:compositae.org:names:CA6AA551-404A-432A-8F0C-BDFFAADB07B5
Source database: GCC, 1 (Beta), Nov 2009
Latest taxonomic scrutiny: Flann C., 10-Nov-09
Online resource: -
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:1e823d38-60a7-102d-be47-00304854f810:ac2010