Henry Allan Gleason

Henry Allan Gleason , 1882-1975, American botanist, plant geographer, and plant ecologist. His floristic studies of North American vegetation led to his "individualistic concept of the plant community," which views each species as functioning independently within the plant community, a concept that has gained favor in recent years. He co-authored two important books with Arthur Cronquist , The Natural Geography of Plants (1964) and the Manual of Vascular Plants of the Northeastern United States and Adjacent Canada (1963, repr. 1991). He also wrote The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada (1952).

Gleason, Henry Allan (1882–1973) An American ecologist, who worked at the New York Botanical Garden and in 1917 challenged the organismic climax theory proposed by F. E. Clements (and later by A. G. Tansley in Britain), in favour of his own individualistic hypothesis.

Gleason, HenryAllan (1882–1973)An American ecologist, who worked at the New York Botanical Garden and, in 1917, challenged the organismicclimax theory proposed by F. E.Clements (and later by A. G.Tansley in Britain), in favour of his own individualistic hypothesis.