圆瓣姜 yuan ban jiang

Pseudostems 1.4--3.2 m. Ligule greenish white, 1.3--1.5 cm, glabrous, apex subtruncate; leaf blade narrowly lanceolate, 45--60 × 7--9 cm, glabrous, midvein basally enlarged and densely red dotted at sides, base cuneate, apex acuminate. Inflorescences arising from rhizomes, ovoid or capitate, 5--8 × 3.5--5 cm; peduncle 2--5 cm; bracts ovate or broadly so, 3--4 × 2.8--3.6 cm, apex acute or shortly acuminate; bracteoles pale proximally, red distally, tubular, 3.4--4.1 cm, white pubescent. Calyx 1.8--2.2 cm, puberulent except densely pubescent at base, apex 3-toothed. Corolla tube 3.4--3.6 cm; lobes white with red apex, lanceolate, 2.7--3 cm, pubescent. Labellum white, orbicular, 2.2--2.4 × 2--2.2 cm; central lobe semiorbicular, margin crisped, apex emarginate; lateral lobes auriculate, ca. 1.4 cm × 5 mm. Filament ca. 2 mm; anther yellow, ca. 1.2 cm; connective appendage ca. 1.2 cm. Ovary pale proximally, yellow distally, subellipsoid, densely pubescent. Capsule dark red with pale brown base, oblong, 4--5 × 2--2.5 cm, 3-angled. Seeds black, obovoid, ca. 6 × 5 mm. Fl. Jul.

* Forests; ca. 600 m. S Yunnan (Mengla Xian).