Fredrik Elfving dating history

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Fredrik Emil Volmar Elfving (9 December 1854 – 21 June 1942) was a Swedish-speaking Finnish botanist, plant physiologist, and university administrator. During his university training, he frequently traveled abroad to learn new scientific methods and techniques from other prominent European scientists. Although his earliest publications dealt with phytogeography and phycology (particularly the green algae known as the desmids), his most notable research was in plant physiology. Early in his career, he published seminal work on the flow of water through the stems of woody plants, and investigated the phenomenon of transversely geotropic plant organs. In contrast to his works on plant physiology, his later experiments and views on lichens, which he himself considered his most important work, was far less favourably received.