| 1 | Native | Africa | Macaronesia | Portugal | Azores | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Africa | Macaronesia | Portugal | Madeira Islands | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Africa | Northern Africa | Algeria | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Africa | Northern Africa | Libya | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Africa | Northern Africa | Morocco | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Africa | Northern Africa | Tunisia | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Asia-Temperate | Western Asia | Cyprus | | | 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 | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Asia-Temperate | Western Asia | Jordan | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Asia-Temperate | Western Asia | Lebanon | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Asia-Temperate | Western Asia | Syria | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Asia-Temperate | Western Asia | Turkey | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Pakistan | | | Nasir, E. & S. I. Ali, eds. 1970-. Flora of [West] Pakistan. |
| 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 | Northern Europe | United Kingdom | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Albania | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 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 | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Greece | Aegean Islands | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Italy | | incl. Sardinia, Sicily | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 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 | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southwestern Europe | Portugal | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southwestern Europe | Spain | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southwestern Europe | Spain | Baleares | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 4 | Naturalized | Africa | Macaronesia | Spain | Canarias | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (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 | | George, A. S., ed. 1980-. Flora of Australia. |
| 4 | Naturalized | Australasia | Australia | Australia | Tasmania | | 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 | | George, A. S., ed. 1980-. Flora of Australia. |
| 4 | Naturalized | Australasia | New Zealand | New Zealand | North Island | | Allan, H. H. B. et al. 1961-. Flora of New Zealand. |
| 4 | Naturalized | Australasia | New Zealand | New Zealand | South Island | | Allan, H. H. B. et al. 1961-. Flora of New Zealand. |
| 4 | Naturalized | Northern America | North-Central U.S.A. | United States | Oklahoma | | Mink, J. N. et al. 2011. Centaurium tenuiflorum (Gentianaceae) new to Oklahoma and notes on Centaurium texense in Mexico. Phytoneuron 2011-49:1-3. |
| 4 | Naturalized | Northern America | Northwestern U.S.A. | United States | Oregon | | Baldwin, B. G. et al., eds. The Jepson manual: vascular plants of California (on-line resource). |
| 4 | Naturalized | Northern America | South-Central U.S.A. | United States | Texas | | Pringle, J. S. 2010. The identity and nomenclature of the Pacific North American species Zeltnera muhlenbergii (Gentianaceae) and its distinction from Centaurium tenuiflorum and other species with which it has been confused. Madroño 57:184-202. |
| 4 | Naturalized | Northern America | Southeastern U.S.A. | United States | Alabama | | Keener, B. R. 2013. Two vascular plant species new to the Alabama flora. Phytoneuron 2013-61:1-4. |
| 4 | Naturalized | Northern America | Southeastern U.S.A. | United States | Louisiana | | Pringle, J. S. 2010. The identity and nomenclature of the Pacific North American species Zeltnera muhlenbergii (Gentianaceae) and its distinction from Centaurium tenuiflorum and other species with which it has been confused. Madroño 57:184-202. |
| 4 | Naturalized | Northern America | Southeastern U.S.A. | United States | Mississippi | | Pringle, J. S. 2010. The identity and nomenclature of the Pacific North American species Zeltnera muhlenbergii (Gentianaceae) and its distinction from Centaurium tenuiflorum and other species with which it has been confused. Madroño 57:184-202. |
| 4 | Naturalized | Northern America | Southwestern U.S.A. | United States | California | | Baldwin, B. G. et al., eds. The Jepson manual: vascular plants of California (on-line resource). |