A database of nearly 2 million herbaria specimen images from around the world. Some special collection materials such as Carl Linnaeus's annotated editions of Systema Naturae and illustrations from Curtis's Botanical Magazine.
A good complement to BIOSIS Previews searches. Use Yale Fulltext links and note "Cited by" numbers. Not all Yale libraries' online content is reflected in Yale Fulltext links; search Orbis manually for other items of interest.