The Greenpharma extract library is a plant extract library which combines Greenpharma expertise in natural source products, and its knowledge in pharmacognosy to create a unique source of diverse and original extracts for screening in the R&D process of drud discovery or active ingredient development. The GPE includes know-how in ethnobotany, botany, pharmacology, pharmacognosy, organic chemistry and analytical chemistry to present a variety of extracts as wide as possible. The selection procedure is based on biotope and taxonomic diversity. Moreover, a “patentability” criteria is added to ensure the originality of the selected plants. Each plant is stocked so that resupply is possible within a short delay.