Abstract Rilke S. & Najmi U.: FloraGREIF — virtual guide and plant database as a practical approach to the flora of Mongolia. — Willdenowia 41: 371–379. December 2011. — Online ISSN 1868-6397; © 2011 BGBM Berlin-Dahlem. Stable URL: http://dx.doi.org/10.3372/wi.41.41217 FloraGREIF is a web-based collaborative project on the flora of Mongolia. It presents a plant database and a virtual herbarium as an introduction to the flora of Mongolia and intends to be used as a digital information system providing taxonomic and biogeographical data. Moreover, it offers a virtual research environment which allows scientific online cooperation. This project refers to the ongoing long-term research cooperation between Germany and Mongolia. It brings together large herbarium collections and modern online communication facilities. The website is a dynamic system with two basic hierarchy levels. On the record level, as many records as possible for a taxon are included. A record is represented by location data, digital scans ...