From the “Norwegian Flora” (Eighteenth Century) to “Plants and Tradition” (Twentieth Century): 200 Years of Norwegian Knowledge about Wild Plants ,1,2 3 4 1 1 I. TEIXIDOR-TONEU* ,K.KJESRUD ,E.BJERKE ,K.PAREKH , AND A. KOOL 1Natural History Museum, University of Oslo, Oslo, Norway 2Naturalis Biodiversity Center, Leiden, The Netherlands 3Museum of Cultural History, University of Oslo, Oslo, Norway 4The Oslo Cathedral School Foundation, Oslo, Norway *Corresponding author; e-mail:
[email protected] Abstract. From the “Norwegian Flora” (eighteenth Century) to “Plants and Tradition” (twentieth Century): 200 Years of Norwegian Knowledge about Wild Plants. Much ethnobotanical knowledge is documented through history in books of various kinds, which allow diachronic studies of plant use. These texts can also contribute to investigate plant knowledge transmission. Here we evaluate the influence of the first Norwegian Flora, Flora Norvegica (J. E. Gunnerus 1766–1776), a major Enlightenment natural history work in Norway, by comparing it to Planter og Tradisjon (“Plants and Tradition,” O. A. Høeg 1974), Norway’s most important ethnobotanical compilation. We systematized informa- tion from these two key historical sources of plant knowledge in Use Reports per category of use. In total, 2449 Use Reports for 552 taxa were collected, including vascular plants, ferns, mosses, algae, lichens, and fungi. We find over 100 unchanged traditions (i.e., plant-use combinations recorded in both books): only 270 Use Reports and 185 taxa are recorded in both sources. Plant knowledge may have changed, been lost or newly developed in Norway, but it is also possible that it has largely been under-documented.