Trees. Leaves ovate to lanceolate-oblong, nearly glabrous, with translucent glands. Flowers medium-sized, bisexual or polygamous, terminal or opposite the leaves, often produced on axillary, very reduced branchlets (pseudo-axillary flowers); pedicels articulate at the base, without bracts. Sepals small. Petals im- bricate in bud and finally widely spreading, all of about the same size, oblong- ovate or obovate. Stamens numerous; pollen sacs locellate; connective expanded above the anther into a truncate disk. Ovules numerous, lateral. Monocarps (sometimes very) large, free, stipitate, ellipsoid-cylindric, with large, reniform seeds.
A small genus of 5 species. Two of them (macrocarpa and goyazensis) are indigenous in eastern Brazil, 1 (nitidifolia) in Peru and Ecuador, 1 (stein- bachii) in eastern Bolivia and adjacent parts of the Amazonas basin and 1 (magnifructa) in Panama and Venezuela.