Leaves 1.3–6 × 0.4–2.8 cm, elliptic to broadly ovate-elliptic, abruptly shortly obtusely acuminate at the apex, ± rounded or cuneate at the base, scarcely discolorous, glabrous save for small pubescent domatia which may be ± absent or, rarely (Malawi) pubescent beneath and on midrib above; petioles 3–4 mm long; stipules connate at the base, glabrous outside, densely long-villous inside, 2 mm long, abruptly subulate-cuspidate, the appendage 1–2 mm long.
Corolla ± rounded to acuminate at the apex in bud; creamy-white; tube 5–6 × 3.5–5 mm obconic, dilated from the base, with a ring of deflexed long hairs inside from the top of the tube; lobes oblong, reflexed, reaching about the middle of the tube, about 3–3.5 × 2–2.5 mm, ovate, obtuse or with a short appendage to 0.5 mm long.
Much branched shrub or small tree 1.5–3.6 m tall, entirely glabrous (save for domatia and insides of stipules), or with young shoots slightly to densely appressed pubescent; older branches greyish, ± nodulose and verrucose, the bark often red-brown and fissured and flaky.
Calyx tube 1.5 mm long; limb obsoletely dentate, truncate or teeth broadly triangular, 0.8 mm long.
Flowers solitary, or in lax 2–4-flowered cymes; pedicels rather thick, 3–5(11) mm long.
Pollen presenter coroniform, 1 mm wide, 3–4-lobed.
Fruit purple-black, about 8 mm long.
Ovary 3–4-locular.