Pseudostems 1.2--2 m. Ligule entire, ca. 5 mm, tomentose or glabrous; petiole 5--10 mm; leaf blade lanceolate, 20--30 × 1--10 cm, glabrous except pubescent along midvein abaxially and at margin, lateral veins very conspicuous and dense when dry, base obtuse, apex acute. Panicles 20--30 cm, usually only 1-or 2-branched; secondary branches many, ca. 1.5 cm; bracts ca. 5 mm; bracteoles funnelform, 3--4 mm, apex obliquely truncate. Pedicel 3--5 mm. Calyx pale green, cupular, 3--4 mm, apex 3-cleft. Corolla white or pale blue-green, abaxially pubescent; tube equaling calyx; lobes 5--7 mm, central one rounded at apex. Lateral staminodes red, quadrate, ca. 1.5 mm. Labellum pale yellow or pinkish with red streaks, obovate, ca. 5 mm, concave, base bearing a purple callosity covering corolla throat. Filament pale yellowish to pinkish, ca. 5 mm, slender; anther ca. 2 mm. Ovary pyriform, glabrous. Capsule globose when fresh, oblong when dry, 8--10 mm in diam. Seeds 3--5, strongly aromatic. Fl. May--Jul, fr. Sep--Dec.
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A ginger family herb. The false stems are 1.2-2 m tall. The leaf stalk is 5-10 mm long. The leaf blade is sword shaped and 20-30 cm long by 1-10 cm wide. There are hairs along the mid vein underneath. The flower panicles are 20-30 cm long and with 1 or 2 branches. There are short secondary branches. The fruit is a round capsule. It is 8-10 mm across. There are 3-5 seeds. These have a strong smell.
In rubber or oil-palm plantations, swampy areas, open country near villages, semi-wild or planted. Forests in southwest China at elevations of 600-1,100 metres.
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A tropical plant. They grow in forests between 600-1100 m altitude in S China. In XTBG Yunnan.
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