He was a member of several learned societies, and was president of the Association of Tropical Botany from 1970 to 1971, and of the Botanical Society of the British Isles in 1982.
He was a member of several scholarly organizations, and served as president of the Association of Tropical Botany from 1970 to 1971, and as president of the Botanical Society of the British Isles in 1982.