Dahlia imperialis, or
bell tree dahlia, is an 8-10 metre tall member of the
Dahlia genus native to Mexico, Central America and Colombia. It is a plant of the uplands and mountains, occurring at elevations of 1,500–1,700 metres (4,900–5,600 ft), and its leaves are used as a dietary supplement by the Q'eqchi' people of San Pedro Carchá in Alta Verapaz, Guatemala.
(Wikipedia)