Orchis

On the development of the ovule in Orchis morio, Linn

by Arthur Henfrey

Recherches embryologigues sur l'Orchis maculata

par M. Montéverdé

The Orchid Genera Anacamptis, Orchis, Neotinea

Horst; Eccarius, Wolfgang; Dietrich, Helga Kretzschmar

Erich Nelson's Book of the Genus Orchis

Erich Nelson

Small round-leaved orchis, Orchis rotundifolia Banks ex Pursh, in Maine and its relevance to the Critical Areas Program

by L.M. Eastman

Orchis elodes Grisebach

by M.J. Godfery

Orchis latifolia L.: a historical study

by M.J. Godfery

Orchis Fuchsii Druce

by M.J. Godfery

Notes on Orchis mascula and O. Morio

by M.J. Godfery

Contribution to the natural history of Aroostook: the orchis

by Olof O. Nylander