Couratari pyramidata (Vell.) R. Knuth

Trees, to 20 m tall. Stems tomentellous when young, becoming glabrous with age. Leaves: petioles 3-10 mm long, tomentellous when young, slightly canaliculate, slightly winged or not winged; blades oblong or rarely elliptic, 9-17 x 3-9 cm, coriaceous, glabrous adaxially except for a few scattered stiff hairs on venation, scattered pilose abaxially, the hairs simple and stellate, the base rouinded to subcuneate, the margins undulate to slightly crenate, the apex retuse to acute ; midrib prominulous and almost glabrous adaxially, prominent abaxially, the secondary veins 13-17 pairs, prominent on both surfaces, the tertiary venation prominently reticulate on both surfaces. Inflorescences terminal or axillary, racemes or once branched paniculate arrangement of racemes, the rachis and rachillae densely tomentellous; pedicels ca. 2 mm long, densely tomentellous. Flowers with hypanthium campanulate, ca. 4 mm long; calyx-lobes ca. 5 mm long, tomentellous on both surfaces, the margins ciliate; petals oblong-ovate, ca. 3 cm long, puberulous abaxially, glabrous adaxially, yellow; androecium with double coil and external flap, ca. 4 cm long, yellow, glabrous, the staminal ring ca. 8 mm diam., the exterior of hood with numerous, dense, echinate appendages, the staminal ring with ca. 45 stamens inserted around ring with greater number towards ligule; ovary 3-locular. Fruit cylindrical, rounded in cross section, broadest at calycine ring, 7-7.5 x up to 4 cm broad, the pericapr ca. 3 mm thick, hard and woody, the calycine ring inserted 10-15 mm below apex, forming an almost unbroken ridge 1 mm tall around perimeter; operculum not radially grooved, centrally convex or concave, the columella triangular. Seeds oblong to lanceolate, to 5 cm long.