Theobroma cocoa and chocolate. "Theobroma" species are used as food plants by the larvae of some moths of the genus "Endoclita", including "E. chalybeatus", "E. damor", "E. hosei" and "E. sericeus". The larvae of another moth, "Hypercompe muzina", feed exclusively on "Theobroma cacao". An active ingredient of cacao, theobromine, is named for the genus. Theobroma Theobroma is a genus of flowering plants in the mallow family, Malvaceae, that is sometimes classified as a member of Sterculiaceae. It contains roughly 20 species of small understory trees native to the tropical forests of Central and South America. The generic name is derived from
Theobroma cacao up to 8% of cacao pods dry weight. The cacao genome appears close to the hypothetical hexaploid ancestor of all dicotyledonous plants, and it is proposed as an evolutionary mechanism by which the 21 chromosomes of the dicots' hypothetical hexaploid ancestor underwent major fusions leading to cacao's 10 chromosome pairs. The genome sequence enables cacao molecular biology and breeding for elite varieties through marker-assisted selection, in particular for genetic resistance to fungal, oomycete and viral diseases responsible for huge yield losses each year. In 2017-18, due to concerns about survivability of cacao plants in an era of global warming in