Orchids of Panama a facsimile reprint of the orchidaceae, flora of Panama
by Louis O. Williams and Paul H. Allen ; with a checklist of the orchids of Panama as known today by Robert L. Dressler.
- St.Louis, Mo. Missouri Botanical Garden Press 1980
- 1 v. (various pagings) : illustrations. ; 26 cm.
'The Orchidaceae, flora of Panama, was published in four parts in the Annals of the Missouri Botanical Garden, appearing in 1946 and 1949'--Pref. Includes bibliographical references and index.