Herbarium UME is a public research herbarium encompassing approximately 300 000 specimens of vascular plants, mosses, algae, fungi and lichens from all parts of the world, but mainly from northern Sweden. Herbarium UME is run by the Department of Ecology and Environmental Sciences (EMG) at the University of Umeå, Sweden, and is a member of NAMSA (Co-operation Forum for Swedish Natural History Museums). The herbarium was founded in 1968 at the former Department for Ecological Botany. Originally, most material came from donations and exchange. Since then much material has been added from researchers collections, schools, private collections, inventories, local flora projects etc. The collections are still growing, and we are happy to recieve material from any part of Northern Fennoscandia. The aim of Herbarium UME is to preserve plant collections from northern Sweden, to give active support to the botanical exploration of the region and to encourage a proper documentation of the flora in connection with inventories, flora projects and research work. The dataset currently holds about 50000 bryophytes, 22000 lichens, 15000 fungi, 10000 vascular plants, and some algae. About a third of the collection at the herbarium is currently registered in the database.