Uploading what I consider Acmella uliginosa (Sw.) Cass. (Syn: Spilanthes uliginosa Sw.) from Herbal Garden Delhi.
The species has cone shaped radiate heads, 7-9 mm long, 5-6 mm broad, leaves cuneate at base, disc orange yellow and achenes ciliate long magin with two small pappus teeth.
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Dr. Gurcharan Singh
Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297 Mob: 9810359089
http://people.du.ac.in/~singhg45/