Small tree 2.4–5 m. tall; branches angular, ± square in cross-section, almost glabrous or more usually covered with pale brown adpressed hairs, often with short white and brown streaks apparent on the bark.. Leaf-blades discolourous, large, elliptic, 10–36 cm. long and 3.5–17.7 cm. wide, apex acute to shortly acuminate, base obtuse to cuneate or sometimes cordate, with 11–14 pairs of lateral nerves, glabrous above, sparsely pubescent and with ± densely adpressed pubescence on the nerves beneath; petioles (0–)0.3–1.7 cm. long, usually covered with adpressed hairs beneath or sometimes glabrous; stipules ± ovate above, narrower at the connate portion, 1.4–4.4 cm. long and 0.6–1.6 cm. wide, connate for 0.2–1.1 cm. above the node, apex obtuse.. Flowers sessile, in ± 18-flowered fascicles, sub-sessile on a spike 4–17 cm. long; internodes 0.5–3 cm. long; peduncles 1.5–7.3 cm. long, densely adpressed hirsute, probably pendulous; bracteoles inconspicuous, ± deltoid and seldom larger than 1.2 mm. long and wide, pubescent or with the hairs confined to the margins.. Calyx almost glabrous or with dense adpressed hairs on the tube, becoming sparser on the limb; tube ± cylindrical, 1.8–3 mm. long and 1.7–3.2 mm. wide; limb 1.6–3.6 mm. long, 2–5.5 mm. wide, truncate, shallowly undulate or shortly dentate, the dentations not exceeding 0.8 mm., sparsely hairy within.. Corolla white or green; tube 8.5–15 mm. long, widening 5–9.5 mm. above the base, 1.4–3.8 mm. wide at base and 3.2–5.5 mm. wide at top, the wall of the lower, narrow portion distincdy lined with a whitish fawn thickened layer, glabrous or covered with adpressed hairs outside and with white or fawn, striated coarser hairs in the throat and a short distance up the lobes; lobes narrowly ovate or ovate, 2.7–5.8 mm. long and 1.4–2.3 mm. wide, long-acuminate or acute (in var. elephantina), glabrous or sparsely hairy.. Anthers 3.3–4.3 mm. long; apex 0.2–1.1 mm. long.. Disc shortly conical.. Style 4–9 mm. long; stigma 3.75–5.6 mm. long.. Infructescences 4.5–17 cm. long; peduncles 4–9 cm. long; fascicles expanding to 5 cm. long; pedicels absent or accrescent and reaching 1 cm. long (in var. elephantina).. Fruit greenish brown, ovoid, 6–11 mm. long and 6–9 mm. wide, glabrous or sparsely hairy (in var. elephantina).. Seeds 0.9–1.1 mm. long.. Fig. 1/4 (but note drawing reversed, contortion should be to the left).
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An erect or scrambling shrub. It can grow 2-8 m high. The leaves are 12-25 cm long by 5-11 cm wide.