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Leaf blades 4.6–10 x 1.1–3.3 cm., lanceolate to ovate-lanceolate, acute at the apex, rounded to cuneate at the base, with long appressed pubescence above and on the nerves beneath; petiole 1–4(7) mm. long; stipules with 5–6 setae, often reflexed when older, 4–9 mm. long from a base 12—2 mm. long.
Flowers white, pinkish white or very pale purple, dimorphic, in slender axillary spikes, 1–5 cm. long, 2 from most nodes even the lowest, usually those where dichotomous branching occurs; peduncle 1–9.5 cm. long.
Fruit 1.5–2 x 1.8–2 mm., globose-reniform, cordate at the base, bilocular, each coccus oblique when separated, the interface densely covered with rhaphides, thin-walled.
Perennial erect weak herb 0.9–1.2 m. tall, with striate stems dichotomously branched at many of the nodes, glabrescent save for nodes and young shoots.
Corolla tube 6–8(10) mm. long, c. 0.5 mm. wide at the base, 1.2–2 mm. wide at the apex, hairy inside; lobes 2 x 0.9 mm.
Style in long-styled flowers exserted 2–2.2 mm.; stigma bifid, the lobes filiform c. 1 mm. long.
Calyx tube 1 x 0.8–1 mm., ovoid; largest lobes 1.5–2(3) x 0.5( 1) mm., rest minute.
Seeds yellow-brown, ellipsoid, 1.4 x 0.8 mm.
