DCHP-1 Online
Hudsonian zone 
n. a biogeographic zone stretching from Labrador to Alaska, bounded on the south by the timber line (def. 2) and being roughly coterminous with the Barren Grounds.
See also: Barren Ground(s)
- 1942 The south banks are strictly transition territory, from the last of the bush to the true barren land--a no-man's country between Hudsonian zone and the northern tundra.
- 1952 The Hudsonian Life Zone . . . extends from the timber limit to the south of James Bay, Lake Mistassini and Pointe de Monts on the North Shore.
- 1942 The south banks are strictly transition territory, from the last of the bush to the true barren land--a no-man's country between Hudsonian zone and the northern tundra.