Dear sir, Very nice description with detailed keys. yes, to me also *Blainvillea acmella* (L.) Philip. Syn: *Verbesina acmella* L.; *Blainvillea latifolia* (L. f.) DC.; *Eclipta latifolia* L. f.; *Blainvillea rhomboidea* Cass.
Anyway it is not coming under the genus Spilanthes (Syn: Acmella). -- *Prabhu Kumar K M* Scientist Plant Systematics & Genetic Resources Division Centre for Medicinal Plant Research (CMPR) & 'CMPR' Herbarium Kottakkal Arya Vaidya Sala Kottakkal, Malappuram *E-mail: [email protected]*
