Plants 18–90 cm. Leaves 2–4, spreading to ascending, gradually reduced to bracts distally; blade linear-lanceolate to lance-oblong, 5–21 × 1–3 cm. Spikes dense. Flowers resupinate, showy, orange; dorsal sepal entire or sometimes emarginate; lateral sepals spreading; petals obovate to oblong-elliptic, margins fringed throughout to entire; lip porrect, ovate to ovate-oblong, without basal thickening, 4–8 × 4–8 mm, margins deeply filiform-fringed; spur slenderly cylindric (mouth triangular or keyhole-shaped), 4–10 mm; rostellum lobes scarcely to strongly curved downward, rarely distally retrorse, digitate; pollinaria with stalks curved downward; pollinia remaining enclosed in anther sacs; viscidia presented forward, nearly perpendicular to ± parallel to lip, orbiculate; ovary slender, 7–13 mm. 2n = 42.
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