Orchis tridentata, Scop

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1980, Flora Europaea. Volume 5. Alismataceae to Orchidaceae (Monocotyledones), Cambridge: Cambridge University Press : 339

8. O. tridentata Scop ., FZ. Cam. ed. 2, 2: 190 (1772).

Tubers ellipsoid or ovoid. Stem 15—45 cm, erect, with 3-4 leaves at or above the base, and with sheaths above. Leaves oblong. Spike conical at first, becoming ovoid. Bracts lanceolate, acuminate, 1 -veined, shorter than to about as long as ovary. Flowers pale violet-lilac. All perianth-segments convergent into a galea; outer ovate or ovate-oblong; inner oblong. Labellum longer than wide, with purple spots, 3-lobed; lateral lobes oblong, truncate, oblique and denticulate at apex; middle lobe twice as long as the lateral, cuneate-obovate, emarginate, with 2 obliquely square lobules, often with apiculum in sinus. Spur cylindrical, directed downwards, | as long as ovary. 2/7 = 42. C. & S. Europe. Al Au BI Bu Co Cr Cz Ga Ge Gr He Hs Hu It Ju Lu Po Rm Rs (K) Sa Si Tu.