| 1 | Native | Northern America | | Mexico | | e. | Anderson, E. F. 2001. The cactus family 520. |
| 1 | Native | Northern America | South-Central U.S.A. | United States | Texas | | Benson, L. 1982. The cacti of the United States and Canada 931. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Florida | | Weakley, A. S. 2011. Flora of the southern and middle Atlantic states. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Georgia | | Weakley, A. S. 2011. Flora of the southern and middle Atlantic states. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Louisiana | s. | Benson, L. 1982. The cacti of the United States and Canada 931. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | North Carolina | | Weakley, A. S. 2011. Flora of the southern and middle Atlantic states. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | South Carolina | | Weakley, A. S. 2011. Flora of the southern and middle Atlantic states. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | Isle of Wight Co. | Benson, L. 1982. The cacti of the United States and Canada 931. |
| 1 | Native | Southern America | Caribbean | Bahamas | | | Acevedo-Rodríguez, P. & M. T. Strong. 2012. Catalogue of seed plants of the West Indies. Smithsonian Contr. Bot. 98 |
| 1 | Native | Southern America | Caribbean | Cuba | | | Anderson, E. F. 2001. The cactus family 520. |
| 4 | Naturalized | Africa | Northeast Tropical Africa | Ethiopia | | | Hedberg, I. & S. Edwards. 1989-. Flora of Ethiopia Note: Eritrea added in 2000 |
| 4 | Naturalized | Africa | South Tropical Africa | Angola | | | Figueiredo, E. & G. F. Smith. 2008. Plants of Angola. Strelitzia 22: 1-279. National Botanical Institute, Pretoria, South Africa. |
| 4 | Naturalized | Africa | Southern Africa | Namibia | | | Dyer, R. A. et al., eds. 1963-. Flora of southern Africa. |
| 4 | Naturalized | Africa | Southern Africa | South Africa | | | Dyer, R. A. et al., eds. 1963-. Flora of southern Africa. |
| 4 | Naturalized | Africa | Western Indian Ocean | Madagascar | | | The Missouri Botanical Garden with others. A Catalogue of the vascular plants of Madagascar (on-line resource). |
| 4 | Naturalized | Australasia | Australia | Australia | New South Wales | | George, A. S., ed. 1980-. Flora of Australia. |
| 4 | Naturalized | Australasia | Australia | Australia | Queensland | | George, A. S., ed. 1980-. Flora of Australia. |
| 4 | Naturalized | Australasia | Australia | Australia | South Australia | n.w. | George, A. S., ed. 1980-. Flora of Australia. |
| 4 | Naturalized | Australasia | Australia | Australia | Victoria | | George, A. S., ed. 1980-. Flora of Australia. |
| 4 | Naturalized | Australasia | Australia | Australia | Western Australia | n.w. | George, A. S., ed. 1980-. Flora of Australia. |
| 4 | Naturalized | Europe | Southwestern Europe | France | | s.e. | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 4 | Naturalized | Europe | Southwestern Europe | Spain | | n.e. | Castroviejo, S. et al., eds. 1989-. Flora iberica: plantas vasculares de la Peninsula Iberica e Islas Baleares. |
| 4 | Naturalized | Pacific | Southwestern Pacific | New Caledonia | | | Institute of Pacific Islands Forestry. Pacific Island Ecosystems at Risk (PIER): plant threats to Pacific ecosystems (on-line resource). |