Petiole to 9 cm, rust-brown villous; leaf blade narrowly ovate to elliptic or narrowly obovate, 2-9 X 0.8-3.5 cm, adaxially whitish pubescent, with a few rust-brown hairs, abaxially densely rust-brown villous, glabrescent between veins, base cuneate to nearly rounded, margin crenate to dentate or serrate, apex acute to obtuse or acuminate; lateral veins 4-6 on each side of midrib, distinct. Cymes 1-6-flowered; peduncle 3-13 cm, rust-brown villous; bracts 2, linear, 2-5 X 0.5-1 mm, rust-brown villous, margin entire. Pedicel 1-2.4 cm. Calyx segments narrowly lanceolate to ovate or triangular, 2-4 mm, margin entire. Corolla yellow to orange-yellow, 1.4-1.9 cm, outside sparsely glandular pubescent to glabrescent; tube cylindric, narrowed at mouth, ca. 1 X 0.4-0.7 mm; limb 2-lipped; adaxial lip 2-sect from near base, lobes 2-3 X 1.5-2 mm; abaxial lip lobes 5-6 X 2.5-3 mm. Stamens adnate to corolla 2-3 mm above base, 3-4 mm; filaments slender, glabrescent to glabrous; anthers broadly oblong, 2-loculed, dehiscing longitudinally, connective glabrous; staminode 1, ca. 1 mm. Disc ca. 2 mm, 5-lobed. Pistil 5-7 mm, glabrous. Stigma 1, disc-shaped. Capsule 1.5-3 cm. Fl. Mar-Jun, fr. Jun-Jul.
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