The Orchid Herbarium of Oakes Ames (Ames Herbarium) contains about 131,000 plant specimens that are pressed, dried, and mounted on archival heavy paper. and labeled with essential collecting data. A collection of 3,000 flowers in glycerin, 4,000 specimens preserved in liquid, and hundreds of line drawings supplement the specimens in the main collection. The Ames Herbarium is exceptionally rich in type specimens, with some 6,000 holotypes and 4,000 isotypes represented, resulting from an active exchange program maintained throughout the years by the staff of the herbarium.