思茅姜 si mao jiang

Rhizomes fleshy; roots ending in tubercles. Pseudostems 30--65 cm. Ligule 2-lobed, 1--8 mm, densely villous; petiole 0.3--1.5(--4.5) cm, gray-brown villous; leaf blade obovate, oblanceolate, or oblong, 1.5--35 × 1.2--7.5 cm, abaxially villous, adaxially glabrous, base cuneate, apex acuminate. Inflorescences arising from rhizomes, green or red, obovoid, 4--7 × 1.5--4 cm; peduncle white, 3--10 cm, villous, scalelike sheaths white, 0.8--3.5 cm, sparsely villous; bracts greenish or white with pinkish apex, obovate or elliptic, 3--5 × 1.3--2.6 cm, villous. Flowers white. Calyx 1--1.5 cm, villous. Corolla tube 4--5 cm; lobes narrowly ovate or lanceolate, 2.4--3 × 0.7--1.1 cm. Labellum fan-shaped, glabrous; central lobe orbicular, 1.7--2.5 × 2.2--3 cm, apex truncate or rounded; lateral lobes obovate, 1--1.5 cm. Anther 1.1--1.2 cm; connective appendage 1.2--1.3 cm. Ovary villous. Capsule red, ovoid, 2--3.5 cm. Seeds black, rarely red. Fl. Sep.

* Forests; 1200--1600 m. S Yunnan (Simao Xian).