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 (a) Subsp . nigra : Basal leaves 7-10 . Spike conical, later elon­ gating somewhat . Flowers blackish-crimson, rarely red, white or yellowish . Inner perianth-segments 2- to 3-veined, the lateral c . 1 /2 as wide as the outer . Throughout the range of the species .