Sesame seeds, known as til in North India, come from Sesamum indicum
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/food-open-sesame
[2] http://admin.indiaenvironmentportal.org.in/category/author/d-j-narain
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/seeds
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nutrition