长柄山姜 chang bing shan jiang

Pseudostems 1.5--3 m. Ligule 2-cleft, ca. 8 mm, hirsute; petiole 4--8 cm; leaf blade oblong-lanceolate, 40--60 × 8--16 cm, adaxially glabrous, abaxially densely pubescent, base cordate or attenuate, slightly oblique, apex with spirally rolled, sharp tip. Racemes erect, 13--30 cm, densely flowered, slightly elongate in fruit, densely yellow hirsute; bracteoles brown, oblong, ca. 3.5 cm, yellow hirsute, apex 2-cleft. Pedicel ca. 2 mm. Calyx pale purple, cylindric, ca. 2 cm, split on 1 side, yellow hirsute, apex 3-cleft. Corolla white; tube ca. 1.2 cm; lobes oblong, ca. 2 × 1.4 cm, margin ciliate. Labellum white, adaxially tinged with red, ovate, ca. 2.5 cm. Anther ca. 1 cm; filament ca. 1 cm. Ovary oblong, ca. 5 mm, densely yellow hirsute. Capsule globose, ca. 2 cm in diam., sparsely villous. Fl. and fr. Apr--Jun. 2 n = 48*.

* Shaded wet places in valley forests; near sea level to 700 m. Guangdong, Guangxi, Guizhou, Yunnan.