Plants 30-40 cm tall. Rhizome, bearing fascicle roots and leaves. Leaves linear-oblong, 5-15 cm long, becoming much longer in tall grass clumps, 5-8 mm wide, fleshy, apex acute, base truncate in radicle ones and attenuate in cauline ones, with 3 main veins, veinlets reticulate. Peduncle 1-4, glabrous, 10-35 cm tall, with 2-3 sterile bracts; rachis 5-15 cm long, with few to many spirally arranged flowers; floral bracts lanceolate. Flowers white or pink; ovary pale green, curved at apex; sepals narrowly lanceolate, 4.5-5 mm long, dorsal one concave at base, lateral ones oblique and slightly gibbose at base; petals oblanceolate, 3.5-4 mm long; lip separated from column base, oblong when expanded, concave and short clawed at base, bearing 2 clavate calli at each side, erect and slightly inflexed at middle, ovate or rounded at apex, apex recurved, with crispate margins, disc hairy; column erect, clavate, 1.8-2.1 mm long; anther broadly ovoid, 0.7 mm long; pollinia ca. 1mm long; stigma orbicular, slightly convex; rostellum thin, triangular-lanceolate, lower margins toothed; viscidium narrowly oblong.
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