Ophrys monophyllos Linnaeus, Sp. Pl. 2: 947. 1753

Plants 3–25(–30) cm. Pseudobulbs 5–10 mm diam. Leaves within proximal 1/3 of stem; blade narrowly to broadly elliptic. Inflorescences spicate racemes, 1–12 cm. Flowers 5–80, resupinate or not; sepals lanceolate to ovate-lanceolate to oblong-lanceolate, margins revolute or not, apex acuminate; petals reflexed, filiform to linear or linear-lanceolate, apex rounded; lip ovate to broadly triangular, concave, base truncate, with forward-directed lobes, apex unlobed, acuminate; column 0.4–0.8 × 0.4–0.8 mm; pollinia yellow. Capsules ascending, ellipsoid, 5 × 3 mm.

Varieties 2 (2 in the flora): n North America, Eurasia.