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Tagetes minuta L. - Asteraceae - huacatay (span.), southern marigold, Mexican marigold, Mexikanische Studentenblume
Annual herb, 30-100cm high, native to South America, naturalized and cultivated elsewhere; leaves lanceolate to linear; flowers tiny, yellow-white.
„It is used as a culinary herb in Peru, Ecuador, and parts of Chile and Bolivia. It is called by the Quechua terms wakatay in Peru or wakataya in Bolivia… Wakatay paste is used to make the popular Peruvian potato dish called ocopa“ http://en.wikipedia.org/wiki/Tagetes_minuta
Main components of the essential oil of the flowers are β-ocimene (31-47%) and tagetenone (34-36%), furthermore dihydrotagetone (1-6%), tagetone (3-8%), limonene (4-6%) and β-phellandrene (1%).
The essential oil of the leaves contains dihydrotagetone (28-47%) as main component, with β-ocimene (12-17%), tagetenone (8-18%), tagetone (12-18%), limonene (11-13%) and β-phellandrene (2%).
[Study of the chemical composition of Essential oils by Gas Chromatography. Chamorro, E. R., Zambón, S. N., Morales, W. G., Sequeira, A. F., Velasco, G. A., Nat. Tech University, Argentina, Vol.15, 2012, 307-324]