Liparis ferruginea Lindley Gard. Chron. 1848: 55. 1848.

锈色羊耳蒜 xiu se yang er suan

Empusa ferruginea (Lindley) M. A. Clements & D. L. Jones; Leptorkis ferruginea (Lindley) Kuntze.

Herbs, terrestrial. Pseudobulbs narrowly ovoid, very small. Leaves 3-6, linear to lanceolate, (13-)20-33 × 0.8-1.2 cm, membranous or herbaceous, base slightly contracted and decurrent into amplexicaul sheath, not articulate, apex acute or shortly acuminate. Inflorescence 35-55 cm, stout; rachis 8-20 cm, several to 10-flowered; floral bracts lanceolate, (2-)4-6 mm. Flowers yellow, lip pale yellowish brown slightly tinged with pale purple; pedicel and ovary 1-1.2 cm. Dorsal sepal linear, 6-7 × ca. 1.5 mm, 3-veined, margin revolute, apex obtuse; lateral sepals reflexed, obliquely ovate-oblong, ca. 6 × 2.5 mm, 5-veined. Petals nearly linear or narrowly oblanceolate-linear, ca. 6 × 1 mm, 1-veined, margin revolute; lip ± recurved, obovate-oblong, 4-5 × ca. 3 mm, with a pair of basal auricles backward spreading and 2 calli near base, apex broadly truncate, often emarginate and sinus apiculate. Column 3-4 mm, upper part with narrow wings on both sides. Capsule oblong or obovoid-oblong, ca. 1.5 cm × 6 mm; fruiting pedicel 8-10 mm. Fl. Jul. 2n = 42.

Shallow water along streamsides, paddy fields, swamps. SE Fujian, S and W Hainan, Hong Kong [Cambodia, Indonesia, Malaysia, Thailand, Vietnam].