Australian botanist/lichenologist (1930 - ).
Rex Bertram Filson (born 1930) is an Australian lichenologist who made major contributions to knowledge of lichens in Australia and Antarctica. Early in his career Filson worked as a carpenter in various places around Australia, and from 1961 to 1963 was employed as a carpenter by the Australian Antarctic Division. This was the start of his career as a lichenologist. In 1964, he was employed by the Royal Botanic Gardens. Employment with the Victorian Department of Crown Lands and Survey followed (1964–1988), first as a seed-collector and finally as senior botanist. During this period, he acqu