Glabrous except for the inflorescence and ovary usually shortly and densely brown tomentose. Leaves opposite or in whorls of 3 or 4; lamina usually oblong to ovate or obovate, rarely lanceolate, 4-9(-14) by 1.5-4(-7) cm, shortly cuneate to almost truncate at the base to a petiole (3-)5-8 mm long, obtuse or rounded (rarely acute or acuminate) at the apex, usually shining and often red above, dull below, often recurved at the margins; venation pinnate with the midrib and the main laterals visible on both sides. Inflorescences at the nodes, pedunculate 2-(rarely 3-to 5-)rayed umbels of triads with the central flowers sessile; peduncle (5-)8-20 mm long; rays 3-6 mm long; lateral flowers usually on pedicels 1-3 mm long but sometimes sessile. Corolla in mature bud 5-merous, 20-30 mm long, slender, weakly clavate and acute at the apex, mostly red or bright pink below and orange, yellow or paler pink above. Anther c. 1.5 mm long, about one fifth as long as the free part of the filament. Fig. 3a-c.
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