Voacanga psilocalyx
A glabrous shrub, 2–3 m high; branches slender, grey. Leaves lanceolate, acuminate, long attenuate at the base, 10–20 cm long, 3.5–6.5 cm broad, papery; secondary nerves very oblique, gently curved, 6–7 on each side; petiole slender, 1–2.5 cm long. Inflorescences terminal from the youngest branch-forks, few-flowered, umbelliform, multibracteate; peduncle slender, 3.8 cm long; bracts persistent, crowded at the base of the pseudoumbel, oblong, acute, 2–3 mm long; pedicels slender, up to 12 mm long. Calyx subcampanulate, 3.5–4 mm long, with a transverse zone of scanty small glands somewhat above the base; lobes oblong, obtuse or shortly acuminate, about as long as the tube. Corolla yellow; tube subcylindric, abruptly constricted at the middle and gradually narrowed towards the mouth, 3.5–4 mm long, twisted, pubescent on the filamental ridges, otherwise glabrous within; limb rotate; lobes obovate-elliptic, 3–3.5 mm long, crisp, brown when dry. Stamens inserted above the middle; anthers 1.5 mm long, tips scarcely exserted, tails long. Disc annular, shorter than the carpels. Berries obliquely obovoid, with a short recurved beak, up to 3 cm long; pericarp rather thin when dry, leathery, with slightly raised curved longitudinal ridges. Seeds about 2.5 mm long, elegantly grooved longitudinally, grooves more or less divided by cross ridges; testa finely honeycombed.
Common
Lower Guinea, from SE Nigeria to Gabon and Congo