The cupuassu leaves are morphologically described. The species present common histological elements in the family, showing types of trichomes, stomata and epidermal cells on the surface view. Young foliar segments were photographed with scanning electron microscopy, where trichomes with star form were detected in the adaxial and abaxial epidermis. The cupuassu leaves are hypostomatic with high numbers anomocytic stomata. The main veins of the cupuassu leaves did not show trichomes, and stomata were sparsely distributed.
native specie; trichomes; stomata
