无毛姜花 wu mao jiang hua

Pseudostems 1--1.2 m. Leaf sheath green except for red, apical margin; ligule reddish, entire, 3--6 cm, membranous, glabrous; petiole 3--7 cm on distal leaves; leaf blade lanceolate or narrowly oblong, 60--70 × 12--15 cm, glabrous, base cuneate, apex acuminate or shortly so. Spikes 20--30 × 8--12 cm, densely flowered; bracts green, ca. 2 cm, 1-flowered; bracteoles red spotted, ca. 1 cm, membranous, glabrous, apex entire. Flowers white becoming yellow. Calyx ca. 2 cm, apex truncate, red spotted. Corolla tube ca. 4 cm; lobes linear, ca. 3.5 cm. Lateral staminodes narrowly lanceolate, ca. 3 cm × 4 mm. Labellum ca. 3 cm, apically 2-cleft for ca. 2/3 its length; lobes narrowly lanceolate. Filament red, ca. 4.4 cm; anther ca. 7 mm. Fl. Jun.

* Forests; ca. 2100 m. S Yunnan (Ximeng Va Zu Zizhixian).