31. Asarum insigne Diels, Notizbl. Bot. Gart. Berlin-Dahlem. 10: 885. 1930.
金耳环 jin er huan
Asarum gracilipes C. S. Yang ex C. F. Liang; A. longepedunculatum O. C. Schmidt.
Herbs. Rhizomes vertical, 2-4 mm in diam., internodes 0.2-0.5 cm. Leaves solitary; petiole 10-20 cm, uncinate-sericeous; leaf blade adaxially with white blotches on lateral veins, narrowly ovate, ovate, or triangular-ovate, 10-15 × 6-11 cm, abaxial surface with tiny oily spots, uncinate-sericeous along veins and margin, adaxial surface sparsely uncinate-sericeous, base deeply auriculate, lateral lobes divaricate, ca. 4 × 4-6 cm, apex acute or acuminate; cataphylls ovate, 1.5-3.5 × 1-1.5 cm. Peduncle ascending to recurved, 2-9.5 cm. Calyx purplish, campanulate-rotate, 3-4 × 3.5-5 cm; sepals connate beyond attachment to ovary, abaxially glabrous; tube campanulate, 1.5-2.5 × ca. 1.5 cm, apical portion swollen and expanded into a girdle-shaped ring without adaxial ridges, narrowly constricted and triangular at throat, adaxially longitudinally plicate, orifice ring absent; lobes broadly ovate to reniform-ovate, 1.5-2.5 × 2-3.5 cm, base with white semicircular pulvinate area ca. 1 cm wide. Stamens 12; filaments much shorter than anthers; connectives slightly extended beyond anthers, awl-shaped to broadly ligulate. Ovary inferior. Styles free, apex 2-forked; stigmas lateral. Fl. Apr-Mar.
* Forests, mountain slopes, rock fissures; ca. 500 m. Guangdong. Guangxi. Jiangxi.