Herbs. Rhizomes vertical, 2-3 mm in diam., internodes 0.5-1 cm. Leaves solitary; petiole 7-17 cm, yellow pubescent; leaf blade adaxially dark green, occasionally with white patches, triangular-ovate to narrowly ovate, 4.5-10 × 4-7 cm, abaxial surface densely yellowish brown pubescent, adaxial surface pubescent along midvein, base auriculate-cordate, lateral lobes 2-3 × 1.5-3.5 cm, apex acute or shortly acuminate; cataphylls ovate, ca. 1.5 × 1 cm. Peduncle often recurved, 1-2.5 cm. Calyx purplish green, campanulate, 2-3 × 1.5-2 cm; sepals connate beyond attachment to ovary, abaxially yellowish pubescent; tube cylindric, ca. 1.5 × 1 cm, not constricted apically, adaxially longitudinally ribbed, orifice ring absent; lobes reflexed, broadly ovate, ca. 1.5 × 1 cm, basal 1/2 with yellowish semicircular pulvinate ring. Stamens 12; filaments much shorter than anthers; connectives slightly extended beyond anthers, awl-shaped. Ovary superior. Styles 6, free, entire; stigmas subterminal. Fl. Apr-Nov.
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