| 1 | Native | Africa | Northern Africa | Algeria | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | Northern Africa | Morocco | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Asia-Temperate | Caucasus | Armenia | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Asia-Temperate | Caucasus | Azerbaijan | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: = Antitoxicum laxum & A. stauropolitanum |
| 1 | Native | Asia-Temperate | Caucasus | Georgia | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: = Antitoxicum laxum & A. stauropolitanum |
| 1 | Native | Asia-Temperate | Caucasus | Russian Federation-Ciscaucasia | Ciscaucasia | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: = Antitoxicum laxum & A. stauropolitanum |
| 1 | Native | Asia-Temperate | Western Asia | Afghanistan | | | |
| 1 | Native | Asia-Temperate | Western Asia | Turkey | | n. | Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Bhutan | | | Grierson, A. J. C. & D. J. Long. 1984-. Flora of Bhutan including a record of plants from Sikkim. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | India | Himachal Pradesh | | Jagtap. A. P. & N. P. Singh. 1999. Asclepiadaceae. In: Botanical Survey of India, Fascicles of flora of India. 24:58-61. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | India | Jammu and Kashmir | | Jagtap. A. P. & N. P. Singh. 1999. Asclepiadaceae. In: Botanical Survey of India, Fascicles of flora of India. 24:58-61. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | India | Punjab | | Jagtap. A. P. & N. P. Singh. 1999. Asclepiadaceae. In: Botanical Survey of India, Fascicles of flora of India. 24:58-61. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | India | Sikkim | | Jagtap. A. P. & N. P. Singh. 1999. Asclepiadaceae. In: Botanical Survey of India, Fascicles of flora of India. 24:58-61. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | India | Uttar Pradesh | | Jagtap. A. P. & N. P. Singh. 1999. Asclepiadaceae. In: Botanical Survey of India, Fascicles of flora of India. 24:58-61. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Nepal | | | Jagtap. A. P. & N. P. Singh. 1999. Asclepiadaceae. In: Botanical Survey of India, Fascicles of flora of India. 24:58-61. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Pakistan | | | Jagtap. A. P. & N. P. Singh. 1999. Asclepiadaceae. In: Botanical Survey of India, Fascicles of flora of India. 24:58-61. |
| 1 | Native | Europe | Eastern Europe | Belarus | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Eastern Europe | Latvia | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Eastern Europe | Lithuania | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Eastern Europe | Moldova | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Eastern Europe | Ukraine | | incl. Krym | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Middle Europe | Czech Republic | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Middle Europe | Germany | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Middle Europe | Hungary | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Middle Europe | Netherlands | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Middle Europe | Poland | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Middle Europe | Slovakia | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Northern Europe | Denmark | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Northern Europe | Finland | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Northern Europe | Norway | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Northern Europe | Sweden | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Albania | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Europe | Southeastern Europe | Bulgaria | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Europe | Southeastern Europe | Croatia | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Greece | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Europe | Southeastern Europe | Italy | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Europe | Southeastern Europe | Serbia | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Slovenia | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southwestern Europe | France | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Europe | Southwestern Europe | Portugal | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Europe | Southwestern Europe | Spain | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 2 | Cultivated | | | | | also cult. | |
| 4 | Naturalized | Northern America | Eastern Canada | Canada | Ontario | | USDA, NRCS. United States Department of Agriculture, Natural Resources Conservation Service's PLANTS database (on-line resource). Note: = Cynanchum vincetoxicum (L.) Pers. |
| 4 | Naturalized | Northern America | Northeastern U.S.A. | United States | New York | | USDA, NRCS. United States Department of Agriculture, Natural Resources Conservation Service's PLANTS database (on-line resource). Note: = Cynanchum vincetoxicum (L.) Pers. |