568 Orchis palustris Jacq.

Syn.: O. laxiflora Lam. subsp. palustris (Jacq.) Bonn. &Lay.

This calciphilous species occurs in C. and parts of N., S. and SE. Europe, NW. Africa and continuing, to an indeterminable extent, into the adjacent parts of Asia. For the closely related taxa, subsp. elegans Soó and O. laxiflora Lam., see Fl. Eur. 5/1980, p. 342, and Meusel et al. 1965, map p. ll0.