Press, Oxford. 422 pp. (2nd edn 1925). Reprinted a number of times, most recently by Biotech Books, Delhi It is unknown why an English translation only appeared fourteen years after the Danish original. In Warming's private correspondence, he mentions to have received a letter from "a professor from Belleville, Illinois, who wishes to translate Plantesamfund" (May 1898, letter to his son Jens). The impact of Plantesamfund It was Eugenius Warming's Lehrbuch der ökologischen Pflanzengeographie that must be considered as the starting point of self-conscious ecology. This book was the first to use physiological relations between plants and their environment, and in addition biotic interactions to explain the moulding of the assemblages that plant geographers had described and classified, and it would set up a research agenda for decades to come. Despite the language barrier, Warming's influence on the development of ecology is remarkable, not the least in Britain and the USA. The British ecologist Arthur Tansley was extremely influenced by reading ’Plantesamfund’ (or rather the 1896 German edition). Reading the book made him jump from anatomy to ecology. The German translation was widely read in England and America and played an important part in stimulating fieldwork in both, countries. It certainly did in my own case: I well remember working through it with enthusiasm in 1898 and going out into the field to see how far one could match the plant communities Warming had described for Denmark in the English countryside; and I also made the book the basis of a course of University Extension lectures at Toynbee Hall in 1899. Similarly, Warming's book impregnated North American naturalists like Henry Chandler Cowles and Frederic Clements. Cowles appear to have been completely taken: Charles J. Chamberlain, who attended Coulter's lectures as a student and later joined the University of Chicago faculty, recalled in a memoir that ‘none of us could read Danish except a Danish student, who would translate a couple of chapters, and the next day Coulter would give a wonderful lecture on Ecology ... Cowles, with his superior knowledge of taxonomy and geology, understood more than the rest of us, and became so interested that he studied Danish and, long before any translation appeared, could read the book in the original ... The treatment of such sand dunes as Warming knew, started Henry on his study of the comparatively immense moving dunes south of the University. Schimper's Pflanzengeographie auf