| 1 | Native | Asia-Temperate | China | China | Heilongjiang Sheng | | Ho, T.-N. & S.-W. Liu. 2015. A worldwide monograph of Swertia and its allies Science Press, Beijing, China. 125. Note: indices are missing |
| 1 | Native | Asia-Temperate | China | China | Jilin Sheng | | Ho, T.-N. & S.-W. Liu. 2015. A worldwide monograph of Swertia and its allies Science Press, Beijing, China. 125. Note: indices are missing |
| 1 | Native | Asia-Temperate | Eastern Asia | Japan | | | Ho, T.-N. & S.-W. Liu. 2015. A worldwide monograph of Swertia and its allies Science Press, Beijing, China. 125. Note: indices are missing |
| 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 | Estonia | | | 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 | Russian Federation | Astrakhan | | Ho, T.-N. & S.-W. Liu. 2015. A worldwide monograph of Swertia and its allies Science Press, Beijing, China. 125. Note: indices are missing |
| 1 | Native | Europe | Eastern Europe | Russian Federation | Kaliningrad | | Ho, T.-N. & S.-W. Liu. 2015. A worldwide monograph of Swertia and its allies Science Press, Beijing, China. 125. Note: indices are missing |
| 1 | Native | Europe | Eastern Europe | Russian Federation | Nizhniy Novgorod | | Ho, T.-N. & S.-W. Liu. 2015. A worldwide monograph of Swertia and its allies Science Press, Beijing, China. 125. Note: indices are missing |
| 1 | Native | Europe | Eastern Europe | Ukraine | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Middle Europe | Austria | | | 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 | Liechtenstein | | | 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 | Middle Europe | Switzerland | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Bulgaria | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Italy | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Europe | Southeastern Europe | Romania | | | 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 | Spain | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Colorado | | Baldwin, B. G. et al. Jepson eFlora (on-line resource). |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Montana | | |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Oregon | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Washington | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Wyoming | | |
| 1 | Native | Northern America | South-Central U.S.A. | United States | New Mexico | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Arizona | | |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | California | | Baldwin, B. G. et al. Jepson eFlora (on-line resource). |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Nevada | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Utah | | |
| 1 | Native | Northern America | Subarctic America | United States | Alaska | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Western Canada | Canada | British Columbia | | |