Plant 6–15 in. high. Leaves 7–12, radical, tufted, lanceolate, acute, narrowed and almost petiolate above the sheathing base, 2 1/2–5 1/2 in. long. Scapes 6–15 in. long; racemes elongate, laxly many-flowered, subsecund, 2 1/2–6 in. long. Bracts lanceolate, acuminate, 1 1/2–5 lin. long. Pedicels 3–4 lin. long. Sepals ovate-oblong, obtuse, 1 1/2 lin. long. Petals suborbicular-oblong, as long as but rather broader than the sepals. Lip 3 1/2 lin. long, cuneate-linear, apical third trilobed; side lobes oblong, obtuse; front lobe linear, obtuse, 1 lin. long, much narrower and slightly shorter than the side lobes. Column stout, 1/2 lin long.