Shrub or treelet to 4 m tall. Branchlets glabrous, sparsely lenticellate with age. Leaves: petiole 3 mm long, glabrous; blade narrowly ovate to elliptic, 3-11 by 1.3-4.6 cm, 1.6-3.8 times as long as wide, apex acuminate with a sharp tip, base cuneate to rounded, glabrous above and beneath, 6-15 pairs of secondary veins, tertiary venation reticulate. Inflorescence terminal, 0.8-2 cm long, few-flowered; peduncle 0.1-1 cm long, glabrous; pedicels 1.5-4 mm long, glabrous. Sepals ovate, 1-1.5 by 0.9-1.1 mm, 1.1-1.4 times as long as wide, apex acute to obtuse, glabrous, ciliate, colleters small in the sinuses. Corolla greenish yellow to red; tube with a lower narrow part and a campanulate upper part, with a raised lip inside between the lower and upper tube, 1.8-2.8 mm long, 1.5-1.9 times as long as sepals, 0.6-0.7 times as long as lobes, minutely puberulent at top of tube outside, glabrous inside; lobes 3-3.9 by 1.5-3 mm, 1.3-2 times as long as wide, apex rounded, minutely puberulent inside and outside; antipetalous corona 1.5-2.9 mm long, entire, adnate to corolla on medial line but with sides free, apex subentire or slightly crenate, glabrous inside, 4.1-7.5 times as long as alternipetalous lobes; alternipetalous corona lobes apparently absent or small and simple, 0.2-0.7 mm long; alternating corona lobes lacking. Stamens subsessile, inserted at 0.3-0.5 of tube length from base, exserted from tube; anthers 2.6-5 by 0.4-1 mm, pubescent only at the top outside. Gynoecium of 2 free carpels united into a common style, ovaries 0.7-1.1 mm high, glabrous; style and style head 1.8-4 mm long. Fruit paired, linear, 6.6-18 cm by 2.5-4 mm, glabrous. Seeds 10 by 0.6 mm; coma 21 mm long.
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