John Rusk:
Joshua Tree and Beavertail
John Rusk:
P20140104-0009—Opuntia microdasys-1
John Rusk:
P20140104-0006—Opuntia microdasys
John Rusk:
P20140125-0002—Opuntia microdays
John Rusk:
H20140525-2602—Opuntia ficus-indica
John Rusk:
H20140525-2605—Opuntia ficus-indica
John Rusk:
H20140525-2608—Opuntia ficus-indica
John Rusk:
H20140529-2671—Opuntia ×occidentalis—RPBG
John Rusk:
T970428C—Opuntia polyacantha var. erinacea—Mojave--April 1997
John Rusk:
H20150416-0045—Opuntia basilaris—RPBG
John Rusk:
J20150528-0097—Opuntia phaeacantha—RPBG
John Rusk:
J20150605-0040—Opuntia xOccidentalis—RPBG
John Rusk:
J20150724-0001—Opuntia ×vaseyi—RPBG
John Rusk:
H20151010-0002—Opuntia ficus-indica
John Rusk:
H20151130-0010—Opuntia phaeacantha—RPBG—DxO
John Rusk:
J20160428-0122—Opuntia basilaris—RPBG
John Rusk:
J20160623-0085—Opuntia phaeacantha—RPBG
John Rusk:
J20160915-0033—Opuntia oricola—RPBG—DxO
John Rusk:
J20170608-0083— Opuntia phaeacantha—RPBG—DxO
John Rusk:
J20171019-0029—Opuntia oricola—RPBG
John Rusk:
J20171114-0017—Opuntia chlorotica—RPBG—DxO