The genus Bocoa Aubl. (Leguminosae - Papilionoideae) is represented in Brazilian Amazon for species Bocoa alterna (Benth.) Cowan, B. racemulosa (Huber) Cowan and B. viridiflora (Ducke) Cowan. With the objetive to analyse the pollinic morphology, adults flower-buds were colleted to the MG and INPA herbarium, and submited to acetolisis and slides preparations. The pollens grains were measured, described, and photomicrographed. The pollen grains are 3-colporate, vary from small to medium size, subprolate to prolate, amb subtriangular to triangular, and surface punctate to microreticulate.The pollen grains of the species analysed were homogeneous, so it is a stenopalynous genus. A key based in polinic caracters was elaborate to separate the species.
pollen morphology; Leguminosae - Papilionoideae; Brazilian Amazon; Bocoa
