勐海山姜 meng hai shan jiang

Pseudostems 1.5--3 m. Leaf sheath striate, glabrous; ligule entire, 1.4--1.6 cm, densely brown pubescent; petiole 4--9 cm, thinly pubescent; leaf blade oblong-lanceolate, 10--120 × 16--20 cm, abaxially pubescent, base cuneate, margin densely ciliate, apex shortly acuminate. Panicles 28--34 cm, densely brown bristly; branches very short, 1- or 2-flowered; bracteoles brown, 3--4 cm, leathery. Calyx light purple-red, tubular, 2--2.3 cm, apex 4-toothed. Corolla tube white, 0.5--1.8 cm, pubescent; lobes white, central one subovate, 3.1--3.6 × 2.1--2.6 cm, lateral ones narrowly elliptic, 1.2--1.5 cm wide. Lateral staminodes red, ca. 1 cm. Labellum orange-yellow, scarlet at center, yellow at margin and at red-striped apex, broadly ovate, 3.5--4 × 3.2--3.8 cm, apex narrowed, 2-lobed. Stamen ca. 3 cm; filament ca. 1.2 cm. Ovary densely yellow-brown pubescent. Style white pubescent. Fl. Apr.

* Low forests; ca. 900 m. SW Yunnan (Menghai Xian).