30 Fields number on the database for Vladimir Andrenkov All Agave Cylindropuntia Echinocactus Echinocereus Escobaria Ferocactus Mammillaria Opuntia Sclerocactus 1 / 1 20 - 40 - 80 Species Field number Locality Picture Opuntia macrorhiza VA 1USA : Colorado (Around Interstate 76 Colorado-Nebraska border, 1131 m) Opuntia polyacantha VA 2USA : Utah (Around Interstate 50 west from Green River, 1385 m) Sclerocactus parviflorus VA 3USA : Utah (Spotted Wolf Canyon, 1310 m) Echinocereus triglochidiatus VA 4USA : Utah (Around Interstate 70, 25 km west from Green River, 1634 m) Opuntia basilaris VA 5USA : Utah (Around Interstate 15, south from Pintura, 1238 m) Escobaria vivipara VA 6USA : Nevada (Cottonwood Valley, West from Las Vegas, 1155 m) Escobaria vivipara VA 7USA : California (South Nopah Range Wilderness Area, 834 m) Echinocereus engelmannii VA 8USA : Nevada (Cottonwood Valley, West from Las Vegas, 1147 m) Ferocactus cylindraceus VA 9USA : California (South Nopah Range Wilderness Area, 830 m) Opuntia basilaris VA 10USA : California (Pyramid Peak, Death Valley NP, 665 m) Echinocactus polycephalus VA 11USA : California (Pyramid Peak, Death Valley NP, 675 m) Echinocereus engelmannii VA 12USA : Arizona (White Hills, 754 m) Mammillaria tetrancistra VA 13USA : Arizona (White Hills, 753 m) Cylindropuntia whipplei VA 14USA : Arizona (White Hills, 754 m) Ferocactus cylindraceus VA 15USA : Arizona (White Hills, 754 m) Agave phillipsiana VA 16USA : Arizona (Grand Canyon NP, South Rim, 1491 m) Echinocereus engelmannii VA 17USA : Arizona (Dead Indian Canyon, 1664 m) Escobaria vivipara VA 18USA : Arizona (Dead Indian Canyon, 1665 m) Opuntia polyacantha VA 19USA : Arizona (Tuba City, 1373 m) Cylindropuntia imbricata VA 20USA : Arizona (Spider Rock , Canyon De Chelly, 1795 m) Opuntia phaeacantha VA 21USA : Arizona (Four Corners, 1497 m) Sclerocactus parviflorus VA 22USA : Arizona (Wheatfields, 1403 m) Echinocereus triglochidiatus neomexicanusVA 23USA : Utah (Armstrong Canyon, 1847 m) Echinocereus triglochidiatus VA 24USA : Utah (UT-95, Lake Powell, 1410 m) Sclerocactus parviflorus VA 25USA : Utah (Torrey, 2098 m) Escobaria vivipara VA 26USA : Utah (Torrey, 2098 m) Sclerocactus parviflorus VA 27USA : Utah (North from Hanksville, 1370 m) Sclerocactus parviflorus VA 28USA : Utah (Near “The Organ” Arches NP, 1333 m) Sclerocactus parviflorus VA 29USA : Utah (Near “Balances Rock” Arches NP, 1513 m) Echinocereus engelmannii VA 30USA : Utah (Near “Delicate Arch” Arches NP, 1356 m) 1 / 1