Plants usually robust, 15-45 cm tall. Tubers palmately 3-5-lobed. Stem erect, stout, hollow, with 2 or 3 tubular sheaths at base, 4-8-leaved. Leaves usually congested at base of stem or sometimes widely spaced, green, not spotted, lanceolate to linear-lanceolate, 7-13 × 1-5 cm, apex acuminate. Rachis 3-15 cm, densely many flowered; floral bracts green, sometimes tinged with purplish red, narrowly lanceolate, basal ones exceeding ovary, apex acuminate. Flowers purplish rose, medium-sized; ovary and pedicel 12-15 mm. Sepals and petals purplish rose to pale purple; dorsal sepal erect, oblong, concave, 7-10 × 2.5-3 mm, 3-veined, apex obtuse; lateral sepals reflexed, ovate-lanceolate, oblique, 8-9 × 3-3.5 mm, 3-veined, apex subobtuse. Petals erect, forming a hood with dorsal sepal, narrowly oblong, oblique, 7-9 × 1.5-2 mm, 2-veined, apex subobtuse; lip obovate to obcordate, (7-)8-10 × (7-)8-11 mm, base spurred, margin entire to shallowly 3-lobed, apex or mid-lobe obtuse-rounded, disk densely minutely papillose, purplish rose to pale purple with a spoon-shaped patch composed of dark purple lines and dots; spur pendulous, slightly curved forward, cylindric, 12-15 mm, almost as long as ovary, apex obtuse. Fl. May-Jul.
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An orchid. It is a bulb plant.
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