Acmella calva

Acmella calva (DC.) R. K. Jansen, Syst. Bot. Monogr. 8 41 1985. (syn: Spilanthes acmella var. calva (DC.) C. B. Cl.; Spilanthes callimorpha A. H. Moore; Spilanthes calva DC.);
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India (widespread, incl. Darjeeling, Sikkim); Nepal; Sri Lanka; China (Yunnan); Myanmar; Indonesia; peninsular Malaysia; Java; Lesser Sunda Isl.; Vietnam; Bangladesh as per Catalogue of life;
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Difference between Acmella calva, A. oleracea and A. paniculata as per research gate link;
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Bangalore-Ooty November 2013 :: Requesting ID of this plant at Ooty :: 18122013 :: ARK-25: Attachments (3). 7 posts by 3 authors.
Requesting to please ID this plant captured growing wild in Ooty in November 2013. Is this some Acmella sps?

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Acmella paniculata I hope

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Thank you … for the feedback. However, the leaves in the pic posted at FoI look different…

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The Plant shown on FOI is not A. paniculata. It is A. uliginosa. A. paniculata does not have ray florets

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Thank you … I take it as Acmella paniculata then….

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This has a pale white form also

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Please see the key on our website
White heads mostly belong to A. radicans

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I think this may be A.calva (syn. S. clava) as per Research Gate publication.

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References:
POWO  Catalogue of Life  The Plant List Ver.1.1  GCC  IPNI  research gate link