01 Subtropical Florida
02 Peninsular Florida
03 South Atlantic Coastal
Plain
04 East
Gulf Coastal Plain
05
Mississippi Alluvial Valley
06 Coastal Prairies
07 South Texas Brushlands
08 Oaks and Prairies
09
Southern New England
10
Mid Atlantic Piedmont
11
Southern Piedmont
12
Mid Atlantic Ridge and Valley
13
Southern Ridge and
Valley
14
Interior Low Plateaus
15
Lower Great Lakes Plain
16
Upper Great Lakes Plain
17
Northern Ridge and Valley
18
St. Lawrence Plain
19 Ozark-Ouachita Plateau
20
Boreal Hardwood Transition |
21
Northern Cumberland
Plateau
22
Ohio Hills
23
Southern Blue Ridge
24
Allegheny Plateau
26
Adirondack Mountains
27
Northern New England
28
Spruce-Hardwood Forest
30 Aspen Parklands
31
Prairie Peninsula
32
Dissected Till Plains
33
Osage Plains
34 Central Mixed-grass
Prairie
36 Central Shortgrass Prairie
37 Northern Mixed-grass Prairie
38
West River
39 Northern
Shortgrass Prairie
40 Northern Tallgrass Prairie
42
West Gulf Coastal Plain
44
Mid Atlantic Coastal Plain
53
Edwards Plateau |
54
Rolling Red Plains
55
Pecos and Staked Plains
56
Chihuahuan Desert
62 Southern
Rocky Mountains
64 Central
Rocky Mountains
66 Sierra
Nevada
69 Utah
Mountains
80 Basin
and Range
81 Mexican Highlands
82 Sonoran Desert
83 Mojave
Desert
84 Mogollon Rim
85 Mesa
and Plains
86 Wyoming Basin
87 Colorado Plateau
89 Columbia Plateau
90 Central
and Southern California Coast and Valleys
93 Southern Pacific Rainforests |
