斑蝉姜 ban chan jiang

Pseudostems 1.6--2 m. Leaf sheath green; ligule 2-lobed to middle, 4.5--8 cm, membranous; petiole absent to 2 cm; leaf blade elliptic or oblong-elliptic, 30--70 × 6--15 cm. Inflorescences arising from rhizomes, ca. 1/2 embedded in ground, globose or ellipsoid, 3.5--4.3 cm in diam.; bracts red, white at base and margin, obovate, 3--4 × 1.3--1.5 cm, abaxially pilose, apex tomentose; bracteoles white or red, tubular, 2.7--3 × ca. 1.3 cm, abaxially pubescent. Calyx white, 1.5--2 cm, split on 1 side, pubescent, apex 3-toothed. Corolla tube white, ca. 2.7 cm, pubescent; lateral lobes ca. 2.4 cm × 5 mm. Labellum purplish brown with dense, yellow spots and yellow base; central lobe linear-oblong, 1.7--2.4 cm × 7--8 mm, apex entire or emarginate; lateral lobes ca. 1.4 cm. Anther subsessile, orange, 1.3--1.5 cm; connective appendage pale blue, 1.1--1.4 cm. Fl. Jun--Jul. 2 n = 22*.

* Forests; ca. 800 m. S Yunnan (Mengla Xian).