Stems to 40 cm, glabrous. Leaves opposite; petiole absent to 5 mm; leaf blade elliptic to lanceolate or oblanceolate, 6.5-12 X 2.1-3.3 cm, papery to leathery, glabrous, adaxially drying wrinkled, abaxially sparsely punctate, base cuneate, margin crenulate and undulate, apex acuminate; lateral veins indistinct. Cymes axillary, 1-3-flowered; peduncle absent; bracts deciduous. Pedicel 0.5-1.7 cm, glabrous. Calyx green, 5-sect from base; segments lanceolate-linear, ca. 1.5 cm X 2 mm, outside glabrous. Corolla yellow-green, ca. 2 cm, outside glabrous, inside with 5 tufts of hairs below middle, mouth not oblique; limb indistinctly 2-lipped, lips nearly equal, ca. 4 mm. Stamens exserted; filaments ca. 1.6 cm; anthers coherent in pairs at apex, ca. 2.5 mm. Pistil ca. 3.4 cm; ovary glabrous. Style ca. 2 cm, sparsely puberulent. Capsule 17-32 cm. Seeds hilar end with ca. 25 hairlike appendages 1-2 cm, opposite end with 1 hairlike appendage 1-1.8 cm. Fl. Nov.
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