Petiole to 11(-14) cm, densely brown villous and gray pubescent; leaf blade broadly ovate to oblong ovate or elliptic, 3.5-11 X 1.5-7 cm, adaxially densely white puberulent and sparsely brown villous, abaxially densely white pubescent, sparsely brown villous along veins, base often oblique, broadly cuneate to cordate, margin coarsely double dentate to double serrate or lobulate, lobes dentate to serrate; lateral veins 4-6 on each side of midrib, conspicuous. Peduncle 5-15(-22) cm, pubescent and sparsely brown villous; bracts narrowly oblong to obovate, 4-7 X 1-2 mm, pubescent to villous. Calyx 7-10 mm, 5-lobed from above middle; lobes broadly triangular to ovate, 1-2.5 mm, outside white puberulent to pubescent and brown villous, margin irregularly dentate. Corolla orange to yellow, 2.2-2.8 cm; limb 2-lipped; adaxial lip rounded, 1.5-3 X 4-4.5 mm, emarginate to undivided; abaxial lip ca. 7 mm, lobes oblong to obovate-oblong, central lobe 5-7 X 5-5.5 mm, lateral lobes 4-5 X 4-5 mm. Stamens included, 5-6 mm; filaments glabrous; staminode 1-3 mm. Disc 2-5 mm, 5-lobed. Pistil 1.3-2.1 cm, glabrous or pubescent. Capsule (1.3-)2.5-5 cm. Fl. May-Oct, fr. Aug-Oct.
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