Epipactis palustris, (L.) Crantz, 1769, 1769

D. M. Moore (ed.), 1980, CCIII Orchidaceae, Flora Europaea, Vol 5: Alismataceae to Orchidaceae, Camebridge: Cambridge University Press, pp. 325-350 : 327

1. E. palustris (L.) Crantz ,

Stirp. Austr. ed. 2, 2: 462 (1769) ( Helleborine palustris (L.) Schrank) .

Rhizome long, creeping. Stem 15-50(-70) cm, pubescent above, purplish below, with sheathing scales. Leaves spirally arranged, 4-8, 5-15x2-4 cm, oblong to oblong-lanceolate, subacute to acuminate, the upper smaller. Raceme 6-15(-20) cm, 7- to 14-flowered; bracts lanceo­ late, the lower equalling flowers, the others shorter. Flowers patent when mature; outer perianth-segments 8-12 mm, lanceo­ late to ovate-lanceolate, greenish, with faint violet stripes, the inner whitish, pinkish below. Labellum 10-12 mm; hypochile slightly concave, with an erect triangular lobe at each side, pinkish-white, with orange-yellow papillae and purplish lines inside; epichile connected by narrow joint, ovate, obtuse, as long as wide, white, with red veins, with undulate margin and lobed basal protuberance. Rostellum persistent. Ovary pubescent. 2n = 40, 44, 46, 48.

Marshes and other damp places.

Most of Europe except the extreme north and parts of the Mediterranean region. Al Au Be?B 1 Br Bu Cz Da Fe Ga Ge Gr Hb He Ho Hs Hu It Ju Lu No Po Rm Rs (N, B, C, W, K, E) Su Tu. 2