扇苞蒟蒻薯 shan bao ju ruo shu

Petiole 10--30 cm; leaf blade oblong to oblong-elliptic, 35--40 × 13--20 cm, glabrescent, base rounded-cuneate to cuneate, apex acuminate. Scape 25--30 cm; involucral bracts 4, outer 2 ovate-lanceolate to elliptic, inner 2 incurved, suborbicular-fan-shaped. Perianth tube ca. 5 mm; lobes in 2 whorls, ovate to narrowly so. Filaments spatulate at apex. Style short, 3-winged, wings alternate with stigma lobes; stigma deeply 3-lobed. Fruit and seeds unknown. Fl. Apr--Jun.

* Mountains; 100--200 m. SE Yunnan (Hekou Yao Zu Zizhixian).