| 1 | Native | Africa | East Tropical Africa | Kenya | | | Cufodontis, G. 1953-1972. Enumeratio plantarum aethiopiae: Spermatophyta. |
| 1 | Native | Africa | East Tropical Africa | Tanzania | | | Cufodontis, G. 1953-1972. Enumeratio plantarum aethiopiae: Spermatophyta. |
| 1 | Native | Africa | East Tropical Africa | Uganda | | | Cufodontis, G. 1953-1972. Enumeratio plantarum aethiopiae: Spermatophyta. |
| 1 | Native | Africa | Macaronesia | Cabo Verde | | | Arechavaleta, M. et al., eds. 2005. Lista preliminar de especies silvestres de Cabo Verde: hongos, plantas y animales terrestres |
| 1 | Native | Africa | Northeast Tropical Africa | Eritrea | | | Hedberg, I. & S. Edwards. 1989-. Flora of Ethiopia Note: Eritrea added in 2000 |
| 1 | Native | Africa | Northeast Tropical Africa | Ethiopia | | | Hedberg, I. & S. Edwards. 1989-. Flora of Ethiopia Note: Eritrea added in 2000 |
| 1 | Native | Africa | Northeast Tropical Africa | Somalia | | | Thulin, M., ed. 1993-. Flora of Somalia. |
| 1 | Native | Africa | Northeast Tropical Africa | Sudan | | | Cufodontis, G. 1953-1972. Enumeratio plantarum aethiopiae: Spermatophyta. |
| 1 | Native | Africa | Northern Africa | Algeria | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | Northern Africa | Egypt | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | Northern Africa | Libya | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | Northern Africa | Morocco | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | West Tropical Africa | Gambia | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | West Tropical Africa | Ghana | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | West Tropical Africa | Guinea-Bissau | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | West Tropical Africa | Mauritania | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | West Tropical Africa | Nigeria | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | West Tropical Africa | Senegal | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | West Tropical Africa | Sierra Leone | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | West-Central Tropical Africa | Cameroon | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | West-Central Tropical Africa | Equatorial Guinea | Bioko | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Asia-Temperate | Arabian Peninsula | Oman | | | Ghazanfar, S. A. 1992. An annotated catalogue of the vascular plants of Oman. Scripta Botanica Belgica 2 |
| 1 | Native | Asia-Temperate | Arabian Peninsula | Saudi Arabia | | | Migahid, A. M. 1988-1990. Flora of Saudi Arabia, ed. 3. |
| 1 | Native | Asia-Temperate | Arabian Peninsula | Yemen | | | Wood, J. R. I. 1997. A handbook of the Yemen flora. |
| 1 | Native | Asia-Temperate | Western Asia | Afghanistan | | | Rechinger, K. H., ed. 1963-. Flora iranica. |
| 1 | Native | Asia-Temperate | Western Asia | Egypt | Sinai | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Asia-Temperate | Western Asia | Iran | | | Rechinger, K. H., ed. 1963-. Flora iranica. |
| 1 | Native | Asia-Temperate | Western Asia | Israel | | | Zohary, M. & N. Feinbrun-Dothan. 1966-. Flora palaestina. |
| 1 | Native | Asia-Temperate | Western Asia | Jordan | | | Zohary, M. & N. Feinbrun-Dothan. 1966-. Flora palaestina. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | India | | | Jagtap. A. P. & N. P. Singh. 1999. Asclepiadaceae. In: Botanical Survey of India, Fascicles of flora of India. 24:11-14. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Nepal | | | Hara, H. et al. 1978-1982. An enumeration of the flowering plants of Nepal. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Pakistan | | | Nasir, E. & S. I. Ali, eds. 1970-. Flora of [West] Pakistan. |
| 1 | Native | Asia-Tropical | Indo-China | Myanmar | | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). Note: cultivated |
| 1 | Native | Asia-Tropical | Indo-China | Thailand | | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). Note: cultivated |
| 1 | Native | Asia-Tropical | Indo-China | Vietnam | | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). Note: cultivated |
| 4 | Naturalized | Africa | Southern Africa | South Africa | North-West | | Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. |
| 4 | Naturalized | Australasia | Australia | Australia | | | Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11. |
| 4 | Naturalized | Northern America | | Mexico | | | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| 4 | Naturalized | Northern America | Southwestern U.S.A. | United States | California | s. | Kartesz, J. T. 2011. North American plant atlas. The Biota of North America Program (BONAP) |
| 4 | Naturalized | Pacific | North-Central Pacific | United States | Hawaii | | Institute of Pacific Islands Forestry. Pacific Island Ecosystems at Risk (PIER): plant threats to Pacific ecosystems (on-line resource). |
| 4 | Naturalized | Southern America | Brazil | Brazil | | | Forzza, R. C. et al., coord. Lista de espécies da flora do Brasil (on-line resource). |
| 4 | Naturalized | Southern America | Caribbean | Anguilla | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 4 | Naturalized | Southern America | Caribbean | Antigua and Barbuda | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 4 | Naturalized | Southern America | Caribbean | Bahamas | | | Correll, D. S. & H. B. Correll. 1982. Flora of the Bahama archipelago. |
| 4 | Naturalized | Southern America | Caribbean | Cayman Islands | | | Proctor, G. R. 1984. Flora of the Cayman Islands. Kew Bulletin Additional Series XI. |
| 4 | Naturalized | Southern America | Caribbean | Cuba | | | Krings, A. et al. 2005. New and rediscovered milkweeds from Cuba: Calotropis gigantea and Gonolobus stephanotrichus (Apocynaceae: Asclepiadoideae). Willdenowia 35:315-318. |
| 4 | Naturalized | Southern America | Caribbean | Dominican Republic | | | Liogier, H. A. 1981-. Flora of Hispaniola: Part 1; La Flora de la Española. Part II-. |
| 4 | Naturalized | Southern America | Caribbean | Guadeloupe | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 4 | Naturalized | Southern America | Caribbean | Haiti | | | Liogier, H. A. 1981-. Flora of Hispaniola: Part 1; La Flora de la Española. Part II-. |
| 4 | Naturalized | Southern America | Caribbean | Jamaica | | | Adams, C. 1972. Flowering plants of Jamaica |
| 4 | Naturalized | Southern America | Caribbean | Martinique | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 4 | Naturalized | Southern America | Caribbean | Montserrat | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 4 | Naturalized | Southern America | Caribbean | St. Vincent and Grenadines | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 4 | Naturalized | Southern America | Caribbean | United States | Puerto Rico | | Liogier, H. A. 1984-. Descriptive flora of Puerto Rico and adjacent islands. |
| 4 | Naturalized | Southern America | Caribbean | United States | Virgin Islands, U.S. | | Acevedo-Rodríguez, P. et al. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78:1-581. |
| 4 | Naturalized | Southern America | Caribbean | Virgin Islands (British) | | | Acevedo-Rodríguez, P. et al. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78:1-581. |
| 4 | Naturalized | Southern America | Central America | Costa Rica | | | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| 4 | Naturalized | Southern America | Central America | El Salvador | | | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| 4 | Naturalized | Southern America | Central America | Guatemala | | | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| 4 | Naturalized | Southern America | Central America | Honduras | | | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| 4 | Naturalized | Southern America | Central America | Nicaragua | | | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| 4 | Naturalized | Southern America | Central America | Panama | | | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| 4 | Naturalized | Southern America | Northern South America | Venezuela | | | Hokche, O. et al. 2008. Nuevo catálogo de la flora vascular de Venezuela. |
| 4 | Naturalized | Southern America | Southern South America | Paraguay | | | Instituto de Botánica Darwinion. 2008. Flora del Conosur. Catálogo de las plantas vasculares. |