Echinocactus polycephalus Cottontop Cactus ID: 9092 3191 3548 0001 [detail] Gerald and Buff Corsi © 1999 California Academy of Sciences	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 0503 0905 [detail] © 2003 Michelle Cloud-Hughes	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1003 0457 [detail] © 2003 Joseph Dougherty/ecology.org	Echinocactus polycephalus Biznaga-tonel Amacollada ID: 1073 3283 3182 0013 [detail] Glenn and Martha Vargas © 2002 California Academy of Sciences
Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1003 0458 [detail] © 2003 Joseph Dougherty/ecology.org	Echinocactus polycephalus Biznaga-tonel Amacollada ID: 1073 3283 3182 0014 [detail] Glenn and Martha Vargas © 2002 California Academy of Sciences	Echinocactus polycephalus Many-headed Barrel ID: 0000 0000 1004 0489 [detail] © 2004 Heath McAllister	Echinocactus polycephalus Many-headed Barrel ID: 0000 0000 1004 0490 [detail] © 2004 Heath McAllister
Echinocactus polycephalus Biznaga-tonel Amacollada ID: 0000 0000 1004 0785 [detail] © 2004 James M. Andre	Echinocactus polycephalus Biznaga-tonel Amacollada ID: 0000 0000 1004 0849 [detail] © 2004 James M. Andre	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 0105 0245 [detail] © 2005 Steven Perkins	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 0105 0246 [detail] © 2005 Steven Perkins
Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 0909 1660 [detail] © 2009 Ryan Gilmore	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 0909 1662 [detail] © 2009 Ryan Gilmore	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 0909 1663 [detail] © 2009 Ryan Gilmore	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 0410 1827 [detail] © 2010 Jarrett DeCorte
Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1212 0325 [detail] © 2012 Nicholas Jensen	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1212 0326 [detail] © 2012 Nicholas Jensen	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1212 0327 [detail] © 2012 Nicholas Jensen	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1120 0925 [detail] © 2020 W. Juergen Schrenk
Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1120 0926 [detail] © 2020 W. Juergen Schrenk	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1120 0955 [detail] © 2020 W. Juergen Schrenk	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 1120 0957 [detail] © 2020 W. Juergen Schrenk	Echinocactus polycephalus Cottontop Cactus ID: 0000 0000 0421 1214 [detail] © 2021 W. Juergen Schrenk

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos.