Shrub to 3 m tall; stems terete, pilose to glabrate. Leaves elliptic, to 18 cm long, 6 cm wide, apically acuminate, basally attenuate, glabrous on both surfaces except for pilose hairs on the midrib in some, the margins crenulate; petioles to 1.5 cm long, pubescent as on the stem. Inflorescences in axillary cymes; bracts and bracteoles subulate, 2-2.5 mm long, 1 mm wide at the base, gla-brous; rachises to 4 cm long, glabrous to sparingly pilose; pedicels 3-5 mm long, glabrous. Flowers with the calyx lobes subulate, 4-5 mm long, 1 mm wide at the base, slightly keeled, glabrous, sometimes ciliolate toward the base; corolla orange red to yellowish, to 5.5 cm long, deeply bilabiate, glabrous, the tube funnelform, basally 4 mm wide, 7 mm wide at the mouth, both the lips ca. 2.8 cm long, the upper lip erect, 8 mm wide, apically dentate in 2 short lobes and hooded to enclose part of the style, the lower lip spreading, 1 cm wide, 3-lobed at the tip, the lobes about equal, 4 mm long, apically rounded; stamens exserted, the anthers pendulous, converging apically and diverging basally, the cells 2.5 mm long, slightly unequal, basally rounded, the filaments stout, 1 mm wide, glabrous. Capsules clavate, to 2.2 cm long, 4 mm wide, puberulous; seeds oval, flattened, 3 mm long, 2 mm wide, roughened.
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