John Rusk:
Joshua Tree and Beavertail
John Rusk:
Echinocereus mojavensis
John Rusk:
T970428C—Opuntia polyacantha var. erinacea—Mojave--April 1997
John Rusk:
H20150416-0045—Opuntia basilaris—RPBG
John Rusk:
Argus Mountains--April 2002 #2-1
John Rusk:
Cholla at Red Rock Canyon,NV--April 2002-1—DxO
John Rusk:
Red Rocks at Red Rock Canyon, NV--April 2002—DxO