Summerhayesia P.J. Cribb in Kew Bull. 32: 184 (1977).
Epiphytic monopodial herbs; stems short, leafy; roots arising at stem base. Leaves distichous, conduplicate, linear or ligulate. Inflorescences arising in leaf axils, many-flowered. Flowers rather fleshy, white or creamy-yellow. Sepals and petals subsimilar. Lip entire, concave, clasping the column, spurred at the base. Column short, stout; androclinium transverse; anther convex; pollinia 2; stipes 1, short; viscidium slipper-shaped; rostellum 3-lobed, mid-lobe acute, lateral lobes obscure.
Trop. Africa

Summerhayesia laurentii (De Wild.) P.J.Cribb W. & WC. Trop. Africa.
Summerhayesia zambesiaca P.J.Cribb Tanzania to S. Trop. Africa.

Bibliography and References:
Arends JC, Van der Laan FM. 1986 Cytotaxonomy of the Vandeae. Lindleyana. 1. 33-41.). Carlsward BS, Stern WL, Bytebier B. 2006 Comparative vegetative anatomy and systematics of the angraecoids (Vandeae, Orchidaceae) with an emphasis on the leafless habit. Bot. J. Linn. Soc. 151. 165-218. Cribb PJ. 1977 (Commemorative name Summerhayesia (Orchidaceae)). Kew Bull. 32. (1): 184 (1977). Fibeck W, Phiri V. 2000 Orchideen in Simbabwe: Aerangis- Verwandte. Orchidee 51. (3): 324-328 (2000) - col. illus. Icones, Anatomy and morphology, Reproductive biology. Geog=5 (KR, 200003462). Gasson P, Cribb PJ. 1986 the leaf anatomy of Ossiculum aurantiacum Cribb & van der Laan (Orchidaceae: Vandoideae). Kew Bull. 41. 827-32. La Croix I. 1994 The Angraecoid orchids: 5. Rangaeris, Listrostachys, Summerhayesia and Plectrelminthus. Orchid Rev. 102. (1197): 129-132 (1994). World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 16/03/2017