| Bolivia | La Paz | | Jørgensen, P. M., M. H. Nee & S. G. Beck | 2014 | Catálogo de las plantas vasculares de Bolivia | Cat. Pl. Vasc. Bolivia, Monogr. Syst. Bot. Missouri Bot. Gard. | 127(1–2): i–viii, 1–1744 |
| Bolivia | La Paz | | Jørgensen, P. M., M. H. Nee, S. G. Beck & A.F. Fuentes | 2015 en adelante | Catálogo de las plantas vasculares de Bolivia (actualizaciones en línea) | | |
| Canada | | | Anonymous | 1986 | (none) | List-Based Rec., Soil Conserv. Serv., U.S.D.A. | |
| Canada | | | Fernald, M. | 1950 | (none) | Manual (ed. 8) | i–lxiv, 1–1632 |
| Canada | | | Small, J. K. | 1933 | (none) | Man. S.E. Fl. | i–xxii, 1–1554 |
| Canada | Newfoundland | | Fernald, M. | 1950 | (none) | Manual (ed. 8) | i–lxiv, 1–1632 |
| Canada | Newfoundland | | Small, J. K. | 1933 | (none) | Man. S.E. Fl. | i–xxii, 1–1554 |
| Canada | Nova Scotia | | Fernald, M. | 1950 | (none) | Manual (ed. 8) | i–lxiv, 1–1632 |
| Canada | Ontario | | Fernald, M. | 1950 | (none) | Manual (ed. 8) | i–lxiv, 1–1632 |
| China | Fujian | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| China | Hebei | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| China | Liaoning | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| China | Sichuan | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| China | Taiwan | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| China | Xinjiang Uygur | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| Kazakhstan | | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| Kyrgyzstan | | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| Russian Federation | | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| Tajikistan | | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| Turkmenistan | | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |
| United States | | | Anonymous | 1986 | (none) | List-Based Rec., Soil Conserv. Serv., U.S.D.A. | |
| United States | | | Fernald, M. | 1950 | (none) | Manual (ed. 8) | i–lxiv, 1–1632 |
| United States | | | Small, J. K. | 1933 | (none) | Man. S.E. Fl. | i–xxii, 1–1554 |
| United States | Georgia | | Fernald, M. | 1950 | (none) | Manual (ed. 8) | i–lxiv, 1–1632 |
| United States | Louisiana | | Fernald, M. | 1950 | (none) | Manual (ed. 8) | i–lxiv, 1–1632 |
| United States | Minnesota | | Small, J. K. | 1933 | (none) | Man. S.E. Fl. | i–xxii, 1–1554 |
| United States | North Carolina | | Small, J. K. | 1933 | (none) | Man. S.E. Fl. | i–xxii, 1–1554 |
| United States | Tennessee | | Fernald, M. | 1950 | (none) | Manual (ed. 8) | i–lxiv, 1–1632 |
| United States | Tennessee | | Small, J. K. | 1933 | (none) | Man. S.E. Fl. | i–xxii, 1–1554 |
| Uzbekistan | | | Flora of China Editorial Committee | 1995 | Flora of China (Gentianaceae through Boraginaceae) | Fl. China | 16: 1–479 |