Shrub to medium-sized tree, up to 30 m tall and 35 cm dbh. Branches densely, ± appressed, brown short-hairy, the same indumentum present on petiole, leaf rachis and petiolules. Stipules very early caducous, not seen. Leaves (4–)5–6(–8)-jugate; petiole terete, 0.5–1.5 cm long, rachis terete, (6–)12–30 cm long; leafl ets: petiolule 2–5(–7) mm long, terete; lamina oblong-elliptic, sometimes ovate-lanceolate, (1–)2–4(–5) times as long as wide, (3–)10–21 × (1.5– )2–5(–7.5) cm, rounded to obtuse at base, (0.5–)1–1.5(–3.5) cm long acuminate at apex, glabrous above with impressed midrib and with ± prominent, reticulate lateral venation, silverish to golden-brown appressed short-hairy beneath, with prominent midrib and 9–16 main lateral nerves. Infl orescence a caulifl orous, loose, pendulous panicle, up to 40 cm long, appressed brown-short-hairy, often up to ± six inserted together on a knob-like base; raceme axis up to 6.5 cm long; bracts supporting the racemes very early caducous, ovateelliptic, up to 1.5 × 1 cm, glabrous inside; bracts supporting the individual fl owers early caducous, narrowly ovateelliptic, up to 3 mm long, glabrous inside. Pedicel (5–)6–10 mm long. Bracteoles elliptic, (8–)10–12(–13) × (4–)5–6(–7) mm, sparsely tomentellous inside, more densely so near margin, edges with a glabrous zone. Hypanthium 1–2 mm long, glabrous, sometimes ± puberulous near the base or in stripes. Sepals oblong-elliptic, 5–7 mm long, 2–3 mm wide, the adaxial one broader and emarginate to shortly bilobed apically, usually glabrous rarely with a few short hairs on margin near base. Large petal: claw 5–8 mm long; lamina (5–)6–10 mm long, 9–14 mm wide, bilobed; small petals all present, ± elliptic, 0.5–2 mm long. Large stamens 3, 2.2–3 cm long, fi laments pubescent in lower part, anthers 2 mm long; staminodes usually all present, up to 3 mm long, some with a minute dehiscent anther of 0.5 mm long. Pistil 2–3 cm long; ovary velutinous, 5–6 mm long, 5–7-ovuled; style hairy as ovary in lower half, glabrous in upper half. Pod oblong in outline, slightly falcate or not, 8–35 × 4.5–6.5 cm, shortly (c. 0.5 cm) stipitate at base, often beaked, pale-brown velutinous with irregular-shaped, darker brown patches and spots, obscurely, ± transversely, slightly prominently veined, up to 7-seeded. Seeds ± elliptic in outline, irregularly lobed, laterally compressed, up to 8 × 4.5 × 1.7 cm , seed coat ± dull, thin.
Source: Breteler F.J. 2010. Revision of the African genus Anthonotha (Leguminosae, Caesalpinioideae). Plant Ecology and Evolution 143: 70–99