A key to the species of the genus Manniella Rchb.f.

1 Lip almost flat at the apex, auricles shorter than lamina Manniella gustavi
1a Lip hooded or saccate at the apex, auricles longer than lamina Manniella cypripedioides

World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 01/04/2020; Orchidaceae of West-central Africa, vol. 1, Gdansk University Press Gdansk 2010