Lettre [sur l'Ophrys insectifera.

Mode of access: Internet.

Orchidaceae quaedam americanae.

"Sâertryk af Vidensk meddel. fra Dansk naturhist. forening," lxxi, 169-180.

Orchidaceae-Monandrae-Coelogyninae /

Includes index.

Orchidaceae-pleonandrae /

Includes index.