Two Alien Trees in Rio de Janeiro.

Studnička M.

Tropical trees Amherstia nobilis (Fabaceae) and Couropita guianensis (Lecythiaceae) are two imported ornamental species cultivated in the Botanic Gardens of Rio de Janeiro. Their strik-ing flowers have an extraordinary morphology, being adapted to bird pollination and bat pol-lination respectively. Nevertheless, their pollination is not fully understood. Concerning nobi-lis it is impossible, because the species is extinct from natural ecosystems.

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