CCIII Orchidaceae Author D. M. Moore (ed.) text 1980 Cambridge University Press Camebridge Flora Europaea, Vol 5: Alismataceae to Orchidaceae 325 350 book chapter 10.5281/zenodo.215522 e75af61c-ea0f-4791-94c6-806a39e338ea 052120108X 215522 16 . Pseudorchis Séguier 2 ( Leucorchis E . H . F . Meyer) Like Gymnadenia but with outer and inner perianth-segments more or less connivent to form a galea . Spur short . Tubers divided to base; leaves 4-6; bracts 3-veined; spur FT as long as ovary, cylindrical, obtuse 1 . albida Tubers divided to about £ way to base; leaves 3-4; bracts 1 -veined; spur c . I as long as ovary, filiform, acute 2 . frivaldii