A key to the genus Epipogium R. Br.

1a. Saprophytic leafless terrestrial herb up to 45 cm. high; tuber ovoid, up to 4 cm. long and 2•5 cm. diam.; scape erect, rather fleshy, with numerous blunt loosely sheathing scales on the lower part; raceme up to 25-flowered, 3-15 cm. long; flowers usually pendulous, whitish or cream with small purplish or pink spots; sepals and petals narrow, acute, nearly 1 cm. long; lip entire, narrowly ovate, with the cordate base enveloping the column, acute, about 1 cm. long, with 2 lines of short hairs running from base to apex, the latter somewhat thickened; spur up to 5 mm. long; column with swollen stigmatic lobes at the base, and much thickened at the apex Epipogium roseum

World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 17/02/2015