Stems 1-2(-12) m, glabrous. Leaves opposite; petiole 3-16 mm; leaf blade narrowly elliptic to ovate or obovate, rarely oblong, 7-13 X (1.8-)2.4-5.5 cm, papery to thin leathery, glabrous, adaxially drying smooth, abaxially sparsely punctate, base cuneate to broadly cuneate, margin entire, apex acuminate; lateral veins indistinct. Cymes axillary or pseudoterminal, 2-4 (-7)-flowered; peduncle (3.5-)7-14 cm; bracts persistent, green, ovate to broadly so, 6-10 X 4-5 mm. Pedicel 3-10(-20) mm, glabrous. Calyx green, 5-sect from base; segments ovate to oblong ovate, 3-5 X 2-3 mm, outside glabrous. Corolla red, 2.8-3 cm, outside glabrous, inside sparsely puberulent, without tufts of hairs, mouth strongly oblique; limb indistinctly 2-lipped; adaxial lip erect, ca. 6 mm; abaxial lip reflexed, ca. 6 mm. Stamens exserted; filaments ca. 1.5 cm; anthers coherent in pairs at apex, ca. 3 mm; staminode ca. 0.6 mm. Pistil ca. 2 cm; ovary glabrous. Style ca. 3 mm, puberulent. Capsule 12-29 cm. Seeds with 1 hairlike appendage at each end, appendages 0.8-1.2 mm. Fl. Sep-Feb, fr. Jan-May.
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