| Allegheny Plateau (Physio 24) |
7 |
395 |
| Aspen Parklands (Physio 30) |
4 |
405 |
| Basin and Range (Physio 80) |
3 |
84 |
| Boreal Hardwood Transition (Physio 20) |
14 |
566 |
| Central and Southern California Coast and Val (Physio 90) |
6 |
171 |
| Central Mixed Grass Prairie (Physio 34) |
4 |
99 |
| Central Rocky Mountains (Physio 64) |
13 |
161 |
| Central Shortgrass Prairie (Physio 36) |
2 |
|
| Chihuahuan Desert (Physio 56) |
2 |
|
| Coastal Prairies (Physio 6) |
7 |
1 |
| Colorado Plateau (Physio 87) |
1 |
|
| Columbia Plateau (Physio 89) |
14 |
103 |
| Dissected Till Plains (Physio 32) |
10 |
450 |
| East Gulf Coastal Plain (Physio 4) |
17 |
320 |
| Edwards Plateau (Physio 53) |
2 |
20 |
| Interior Low Plateaus (Physio 14) |
28 |
1901 |
| Lower Great Lakes Plain (Physio 15) |
2 |
181 |
| Mesa and Plains (Physio 85) |
5 |
|
| Mexican Highlands (Physio 81) |
2 |
6 |
| Mid Atlantic Coastal Plain (Physio 44) |
26 |
1912 |
| Mid Atlantic Piedmont (Physio 10) |
4 |
1281 |
| Mid Atlantic Ridge and Valley (Physio 12) |
2 |
90 |
| Mississippi Alluvial Valley (Physio 5) |
44 |
907 |
| Mohave Desert (Physio 83) |
4 |
80 |
| Northern Cumberland Plateau (Physio 21) |
12 |
1000 |
| Northern Mixed Grass Prairie (Physio 37) |
3 |
|
| Northern New England (Physio 27) |
7 |
365 |
| Northern Ridge and Valley (Physio 17) |
4 |
323 |
| Northern Shortgrass Prairie (Physio 39) |
2 |
|
| Northern Tallgrass Prairie (Physio 40) |
14 |
675 |
| Oaks and Prairies (Physio 8) |
1 |
40 |
| Ohio Hills (Physio 22) |
4 |
149 |
| Osage Plains (Physio 33) |
3 |
2 |
| Ozark-Ouachita Plateau (Physio 19) |
9 |
812 |
| Peninsular Florida (Physio 2) |
9 |
11 |
| Prairie Peninsula (Physio 31) |
19 |
58 |
| Sonoran Desert (Physio 82) |
9 |
556 |
| South Atlantic Coastal Plain (Physio 3) |
16 |
2025 |
| South Texas Brushlands (Physio 7) |
3 |
49 |
| Southern Alaska Coast (Physio 96) |
1 |
66 |
| Southern Blue Ridge (Physio 23) |
4 |
261 |
| Southern New England (Physio 9) |
23 |
1001 |
| Southern Pacific Rainforests (Physio 93) |
8 |
61 |
| Southern Piedmont (Physio 11) |
1 |
|
| Southern Ridge and Valley (Physio 13) |
6 |
512 |
| Southern Rocky Mountains (Physio 62) |
1 |
761 |
| Spruce-Hardwood Forest (Physio 28) |
7 |
993 |
| St. Lawrence Plain (Physio 18) |
1 |
85 |
| Subtropical Florida (Physio 1) |
6 |
576 |
| Tundra (Physio 99) |
1 |
|
| Upper Great Lakes Plain (Physio 16) |
21 |
3121 |
| West Gulf Coastal Plain (Physio 42) |
7 |
239 |
| Wyoming Basin (Physio 86) |
2 |
|