Branchlets glabrous. Leaves: petiole 3.5-24 mm long, glabrous or with few hairs; blade subcoriaceous, elliptic, 3.6-14.1 by 1.8-6.3 cm, 1.2-5.2 times as long as wide, apex acuminate, base acute to rounded, glabrous, 6-12 pairs of secondary veins, slightly ascending, tertiary venation reticulate and somewhat prominent above. Inflorescence a lax axillary cyme, 4-11 cm long, minutely puberulent on upper parts; pedicels 4.2-8.5 mm long. Sepals ovate, 2.1-4 by 1.2-2.9 mm, 1.2-1.9 times as long as wide, apex obtuse to acuminate, sparsely shortly puberulent outside. Corolla pink, sometimes to reddish or purplish, in bud with a rounded, rarely apiculate, head, lobes clearly overlapping; tube 3.4-5.2 mm long, 1.1-2.2 times as long as sepals, 0.5-0.9 times as long as lobes; lobes ovate to oblong, 2.4-4 by 1.8-3 mm, apex obtuse; glabrous outside, densely puberulent in upper part of the tube and on the front of filaments. Stamens inserted at 2.7 mm from corolla base which is 0.5 of tube length; filaments slightly curved, 0.2-0.5 mm long; anthers 3.4-4.3 by 0.7-0.8 mm, 4.8-5.4 times as long as wide. Disk annular, 5-dentate, enclosing ovary, 1.2-1.7 mm long. Ovary 1-1.7 mm long; style 2.2-3 mm long; style head 1.2-1.5 mm long. Fruit fusiform, with long irregular spine-like outgrowths of the fruit wall; 6.2-11 by 1.8-2.9 cm. Seeds: grain 8.7-15.2 by 2-4 mm; coma 1.8-3.4 mm long.
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