Shrubs evergreen or trees, 4-10 m tall, to 60 cm d.b.h.; bark gray-white. Branchlets glabrous or nearly so, rarely stellate puberulent or stellate. Stipules foliaceous, oblong, ca. 2 × 1.2 cm, stellate pilose, apex rounded, caducous; petiole 3-8 cm; leaf blade nearly orbicular to broadly ovate, 8-15 × 8-15 cm, leathery, green, abaxially densely gray-white stellate puberulent, adaxially very sparsely stellate scaly, glabrescent, basal veins 7 or 9, base cordate, margin entire or obscurely crenate, apex abruptly acuminate. Inflorescence a 1-to few-flowered racemelike cyme, terminal or axillary; peduncle 4-5 cm. Pedicel 1-3 cm, with 1 pair of stipulelike bracteoles at base. Epicalyx lobes 7-10, joined for 1/3-1/2 of length, free lobes 2-2.5 mm, triangular-acuminate with slightly rounded sinuses, densely gray-white stellate puberulent. Calyx 1.5-2.5 cm, connate proximally for 1/4-1/3 of length, lobes 5, lanceolate, stellate puberulent, persistent. Corolla yellow with dark purple center, campanulate, 6-7.5 cm in diam.; petals obovate, 4-4.5 cm, yellow stellate puberulent abaxially. Filament tube ca. 3 cm, glabrous. Style branches 5, slender, with glandular hairs. Capsule subglobose to ovoid, ca. 2 cm, obscurely beaked, densely fascicled-hirsute, valves 5, woody. Seeds reniform, smooth, glabrous. Fl. Jun-Aug.
Tree or shrub, 0.3-5.0 m high; young branches stellate-tomentose. Leaves suborbicular, upper surface glabrescent, lower densely and finely stellate-tomentose, apex abruptly acuminate, margins entire, base deeply cordate, 5-9-nerved. Flowers in axillary or terminal panicles, up to 80 mm in diam. Calyx up to 30 mm long, 5-lobed to middle, lobes lanceolate, tomentellous. Petals obovate, contorted, yellow, dark centred. Staminal tube ± 250 mm long; filaments 0.5-1.0 mm long. Style branches as many as carpels, densely glandular. Flowering time Dec.-Apr. Fruit a subglobose capsule, acute at apex, tomentose. Seeds subreniform, glabrous.