New World Arboretum Groups

1 Alaska, Southern Coast Range

2 British Columbia, Coastal Range

3 Washington, Cascades Range

4 Washington, Olympic Mountains

5 Oregon, Coastal Range

6 California, Coastal Range

7 California, Sierra Nevada

8 Idaho & Montana, Northern Rocky Mountains

9 Colorado & New Mexico, Southern Rocky Mountains

10 Chile & Argentina, Andean Mountains

11 North-Canada, Boreal Zone

12 New Brunswick, Acadian Forest Region

13 Ontario & Quebec, Great Lakes Region

14 West-Pennsylvania, Allegheny Plateau

15 Eastern USA, Appalachian Mountains

16 Eastern USA, Downstream Ohio

17 South-East USA, Lower Mississippi River

18 New Hampshire, White mountains

19 New Jersey, Piedmont Plateau and Coastal Plain

20 North Carolina, Coastal Plain