Pacific Northwest
Southwest
southwestern United States
Great Divide
Continental Divide of the Americas
Texas storksbill
Erodium texanum
Rocky Mountains
Rockies
southern red cedar
Juniperus silicicola
Guadalupe Mountains
black haw
chittamwood
Baja California
false buckthorn
chittimwood
Baja California Peninsula
shittimwood
Lower California
Bumelia lanuginosa
Cascade Range
genus Cedrela
Cedrela
Cascades
Cascade Mountains
Sierra Madre Occidental
Northwest
mountain skink
genus Amelanchier
AZ
Grand Canyon State
Amelanchier
Chihuahuan Desert
Eumeces callicephalus
northwestern United States
Arizona
Crotalus lepidus
Wyoming
Equality State
WY
rock rattlesnake
Wyo.
timber rattlesnake
Crotalus horridus horridus
banded rattlesnake
Bufo boreas
sprigtail
sharp-tailed grouse
southeastern United States
western toad
genus Fouquieria
Fouquieria
borealization
Pedioecetes phasianellus
Southeast
backwoods
sprig tail
Melicocca
Protium heptaphyllum
Great Smoky Mountains National Park
heartleaf milkweed
Melicoccus
genus Melicocca
Saratoga spittlebug
genus Melicoccus
Mephitis macroura
Protium guianense
Aphrophora saratogensis
hooded skunk
northeastern United States
Northeast