Broad Leaved Helleborine is a herb up to 60-100 cm tall. Leaves spreading, ovate to ovate-lanceolate. Inflorescence normally densely many-flowered, up to 25 cm long. Bracts lanceolate, lower exceeding flowers, the upper decreasing in size. Sepals and petals relatively short and blunt, resulting in a cup-shaped flower. Sepals yellowish-green. Petals ovate, pale green, pink, purple, or yellowish, 9–11 × 4–6 mm. Lip indistinctly veined, constricted at middle into 2 parts. Inner part is cup-shaped, outside green, inside dark shining olive-brown, with nectar. Flowering: June-August.