Erect shrub or climber. Branchlets weakly or strongly angled, sparsely lenticellate, glabrous. Leaves in whorls of 3; petiole 0.2-0.6 cm long, glabrous; blade coriaceous or subcoriaceous, elliptic, often very narrowly so, 3.7-10 by 0.5-2.9 cm, 2.1-10.2 times as long as wide, apex long acuminate or caudate, base obtuse to decurrent onto petiole, margin strongly undulate, glabrous beneath and above, often punctate beneath, secondary veins 33-79 pairs, 70° from midrib. Inflorescence axillary, with several clear internodes and unbranched side branches, delicate, glabrous or sparsely puberulent all over, 1.7-3 cm long; peduncle 0.3-1.6 cm by 0.5-0.7 mm; bracts caducous or persistent, deltoid, linear or narrowly ovate, 1-4 by 0.4-0.7 mm; bracteoles absent or one on pedicel; flowers 4-7; pedicels 2.8-4 mm long. Sepals ovate, 0.8-1 by 0.5 mm, 1.6-2 times as long as wide, apex acute or acuminate, ciliate, glabrous or sparsely puberulent. Corolla yellow or white with orange tube; bud head 2-2.1 mm long which is c. 0.43 of bud length, narrowly ovate, apex acuminate; tube slightly inflated, 2.7-3 by 1.1-1.2 mm, 3-3.4 times as long as sepals, 1.3-1.8 times as long as lobes, glabrous outside, sparsely pubescent around stamens and more densely in a band beneath them inside; lobes elliptic, 1.5-2.3 by 0.7-0.8 mm, 1.9-2.8 times as long as wide, apex acuminate, base auriculate, glabrous outside and inside, not ciliate. Stamens inserted at c. 1.9 mm from corolla base which is 0.54 of tube length; filaments c. 0.6 mm long; anther apex c. 0.5 mm from corolla mouth, anthers c. 1 by 0.3 mm. Ovaries c. 0.7 mm high, pubescent in tuft between carpels; style c. 0.9 mm long; style head c. 0.4 mm long. Fruit stalks c. 2.5 mm long, with 1 article, glabrous, articles dry and smooth, 12.5-14 by 7.2-8.6 mm, ellipsoid, symmetrical, apex rounded. Seeds ovoid, 10.5-12.6 by 6.1 by 3.5-5.4 mm.
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