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Tropaeolum majus
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Brassicales
Family: Tropaeolaceae
Genus: Tropaeolum

About 80 species.

Tropaeolum is a genus of roughly 80 species of annual and perennial herbaceous flowering plants and the only genus in the family Tropaeolaceae. The genus Tropaeolum is native in Central America and South America. The roots of the specie T. polyphyllum from Chile can survive underground when air temperatures drop as low as -15°C (5°F).