Nigritella nigra subsp. corneliana, Beauverd, 1926

D. M. Moore (ed.), 1980, CCIII Orchidaceae, Flora Europaea, Vol 5: Alismataceae to Orchidaceae, Camebridge: Cambridge University Press, pp. 325-350 : 333

(c) Subsp. comeliana Beauverd ,

op. cit. 336 (1926):

Basal leaves 12-18. Spike conical, later elongating somewhat. Flowers white, tinged with pink. Inner perianth-segments 1 -veined, the lateral about as wide as the outer

. • S. W. Alps.