Sobennikoffia Schltr., Repert. Spec. Nov. Regni Veg. Beih. 33: 361 (1925).
Species belonging to the genus Sobennikoffia are terrestrial, semi-terrestrial, lithophytic, or epiphytic. The flowers are quite large, white or greenish in color, and appear on many-flowered a continuation of the lip.
It was named by Rudolf Schlechter in 1925 for his wife, whose maiden name was Sobennikoff.

Sobennikoffia fournieriana (Kraenzl.) Schltr. Madagascar.
Sobennikoffia humbertiana H.Perrier SW. Madagascar.
Sobennikoffia poissoniana H.Perrier N. & NW. Madagascar.
Sobennikoffia robusta (Schltr.) Schltr. NW. Madagascar.

Bibliography and References:
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.
Hillerman F. 1979 New and pleasant surprises from Madagascar. Amer. Orchid Soc. Bull. 48. (4): 335 - 340 (1979)
Sheehan T, Sheehan M. 1991 Orchid genera illustrated 142: Sobennikoffia. Amer. Orchid Soc. Bull. 60. (9): 856-857 (1991)
World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 16/03/2017