Tambourissa amplifolia (Bois de Tambour).

It is a bush of the undergrowth or a tree reaching 8 m in height, being monoecious and heterophyllous. The trunk can reach 9 cm in diameter or the plant can be a small tree with few erect branches. Plantlets bear rough hairs. Adult foliate branches are rounded, smooth measuring 5-14 mm in diameter and have swelling nodes.

 The leaves are often grouped at the terminal part of branches. They are opposite, sub-opposite, sometimes in pseudoverticils of 4.  The petiole measures 1.4-3 cm by 4-8 mm. The lamina varies from elliptical to oval, is sometimes more or less falciform, 15-45 (-50) 8-23 (-24) cm. It can be pointed to acuminate at the tip and cuneiform to obtuse at the base.

 There are 7-9 pairs of secondary veins, which make an angle of 60-700 with the midrib. Leaves of plantlets have a red petiole. Lamina bears 1-3 pairs of teeth in the apical part. The inflorescences are found solitary on the basal part of the trunk or fasciculate or in uni/bisexual racemes of 3-7 flowers, whereby the female flowers are often terminal.

 Male flower buds are globular, pubescent, measuring 7-8 mm in diameter. They are apiculate and bear 4 small tepals. The pedicel measures 2.5-6 cm 0.8-1 mm, is pubescent, and is subtended by minute deciduous bract. The receptacle, at anthesis, measures 1.4-1.8 cm in diameter. The receptacle is 4-lobed where the lobes are thick, nearly flat or slightly incurved, with a smooth internal surface. There are 100-250 stamens. These are obovoid, measuring 0.8-1.5 0.5-0.6 mm. The anther has confluent locules at the top, rarely separated, reaching half to 2/3 of total length. The connective is not prolonged and the filament distinct and short.

 Female flower buds are napiform-discoid, pubescent, flattened at the top and apiculate or can bear several pairs of minute tepals. The pedicel measures 3.8-8 cm 1.5 mm. The receptacle is napiform-discoid at anthesis. It measures 1.1-1.3 cm in diameter and 4-6 mm high. It splits into 4 (-6) triangular, erect lobes with a more or less square or subcircular orifice, making about 1/2 the width of the receptacle. There are about 300 styles, which are shortly conical, 0.6-1 mm long and 0.2-0.3 mm in diameter at the base. The internal surface of the receptacle is velvety, with simple dense hairs.

 Fruits are solitary, mainly found at the base of trunks and more rarely on the branches. The receptacle is napiform-urceolate to subglobular, 3-5.6 cm in diameter and 2.2-4.5 cm high, with an orifice being 2.5 cm in diameter. The wall is about 1.2 cm thick. The external surface is brown and corky. The internal surface bears numerous styles, which are shortly conical, 0.6-1 mm long and 0.2-0.3 mm in diameter at the base. These styles are mixed with few simple hairs. The pedicels measure (1.5-) 3.5-8 cm 4-5 mm.

 Ripe carpels are compressed ovoids, being 1.2-1.3 cm long. The endocarp is light.