Herbs. Rhizomes horizontal, ca. 3 mm in diam., internodes 0.5-2(-5) cm. Leaves solitary; petiole 8-22 cm, glabrous; leaf blade uniformly green, ovate-cordate to triangular-cordate, or rarely hastate-cordate, 5-13 × 4-10 cm, abaxial surface glabrous, adaxial surface velutinous, base cordate or rarely auriculate, lateral lobes 1.5-2 × 1.5-4 cm, apex acuminate; cataphylls lanceolate, ca. 1.8 × 0.6-1 cm. Peduncle ascending, 1-3.5 cm. Calyx purplish, campanulate, 4-5 × 3-4 cm; sepals connate beyond attachment to ovary, abaxially glabrous; tube subcylindric, 1.2-1.5 × 0.9-1.5 cm, slightly constricted at throat, adaxially longitudinally corrugate, orifice ring 2-3 mm wide; lobes triangular-ovate, 1.5-2 × 1-2 cm, adaxially densely tomentose, base with triangular papillate-rugose area. Stamens 12; filaments shorter than anthers; connectives slightly extended beyond anthers, ligulate. Ovary nearly superior or half-inferior. Styles free, apex notched; stigmas lateral. Fl. Apr-Jun.
Home