Erodium texanum
Texas storksbill
Chihuahuan Desert
Trimorphodon lambda
Sonoran lyre snake
fringe-toed lizard
Uma notata
Sonoran Desert
tiger rattlesnake
Crotalus tigris
Mojave
Mojave Desert
Mohave
Mohave Desert
Coahuila
Lower California
hooded skunk
Mephitis macroura
Baja California Peninsula
Baja California
southwestern United States
Painted Desert
Southwest
Gila Desert
Thomomys bottae
valley pocket gopher
Chihuahua
Oryzopsis hymenoides
mountain rice
Middle America
silkgrass
silk grass
Plains
Indian millet
western coral snake
rosy boa
Micruroides euryxanthus
Lichanura trivirgata
Arenaria caroliniana
longroot
Llano Estacado
Black Rock Desert
pine-barren sandwort
Neb.
N.M.
New Mexico
Nebraska
NM
NE
Cornhusker State
Land of Enchantment
Equality State
Wyo.
Wyoming
WY
Guanajuato
Salpinctes obsoletus
northwestern United States
Prairies
rock wren
jungle
Northwest
Great Basin
Sierra Madre Occidental
Micrurus fulvius
eastern coral snake
southwestern
Sacramento Mountains
Guadalupe Mountains
timber rattlesnake
Arizona
banded rattlesnake
AZ
scarlet musk flower
Crotalus horridus horridus
Grand Canyon State
Nyctaginia capitata
Atriplex lentiformis
Great Divide
Continental Divide of the Americas
quail brush
white thistle
quail bush
aridic
quebrada
Carson
Northeast
Leptotyphlops humilis
rock rattlesnake
northeastern United States
desertscape
western blind snake
Fouquieria
Texas chachalaca
genus Fouquieria
Crotalus lepidus
Ortilis vetula macalli
canyonland