Orchis papilionacea, L., 1759

D. M. Moore (ed.), 1980, CCIII Orchidaceae, Flora Europaea, Vol 5: Alismataceae to Orchidaceae, Camebridge: Cambridge University Press, pp. 325-350 : 338

1. O. papilionacea L. ,

Syst. Nat. ed. 10, 2: 1242 (1759).

Tubers globose. Stem 20-40 cm, erect, with basal rosette of leaves and sheaths above. Leaves lanceolate to linear-lanceolate. Spike ovoid, lax, few-flowered, rarely cylindrical and rather dense. Bracts lanceolate, 3- to 4-veined, longer than ovary. Flowers purple, rarely red or brownish. All perianth-segments convergent into a galea; outer 10—15(—18) mm, ovate-oblong, the inner similar. Labellum 12—16(—25) x 12—16(—25) mm, undivided, unguiculate, suborbicular or obcordate, constricted at the base, rarely ovate-flabellate or obscurely 3-lobed. Spur deflexed, cylindrical, shorter than ovary. 2/z = 32.

Grassland; calcicole.

S. Europe.?A 1 B 1 Bu Co Cr Ga Gr Hs It Ju Lu Rm Sa Si Tu.