cholla
Opuntia cholla
genus Lophophora
Lophophora
Myrtillocactus
genus Myrtillocactus
rainbow cactus
Pediocactus
genus Pediocactus
genus Echinocactus
feather ball
Ariocarpus
Mammillaria plumosa
genus Ariocarpus
Euphorbia antisyphilitica
genus Ferocactus
Ferocactus
candelilla
organ pipe cactus
Atriplex lentiformis
quail bush
quail brush
white thistle
genus Aporocactus
Aporocactus
elephant tree
genus Epiphyllum
perennial ragweed
genus Echinocereus
echinocactus
Echinocereus
barrel cactus
western ragweed
Ambrosia psilostachya
Tsuga caroliniana
Carolina hemlock
Hylocereus
Arizona wild cotton
genus Hylocereus
wild cotton
Gossypium thurberi
paloverde
areole
Ariocarpus fissuratus
living rock
genus Coryphantha
downy manzanita
woolly manzanita
Arctostaphylos tomentosa
slipper plant