| 1 | Native | Africa | Northern Africa | Algeria | | | Quézel, P. & S. Santa. 1962-1963. Nouvelle flore de l'Algerie. |
| 1 | Native | Africa | Northern Africa | Morocco | | | Valdés, B. et al., eds. 2002. Catalogue des plantes vasculaires du nord du Maroc, incluant des clés d'identification |
| 1 | Native | Africa | Northern Africa | Tunisia | | | Pottier-Alapetite, G. 1979-1981. Flore de la Tunisie: Angiospermes-Dicotyledones. |
| 1 | Native | Africa | Southern Africa | South Africa | Eastern Cape | | Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. |
| 1 | Native | Africa | Southern Africa | South Africa | Northern Cape | | Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. |
| 1 | Native | Africa | Southern Africa | South Africa | Western Cape | | Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. |
| 1 | Native | Asia-Temperate | Caucasus | Armenia | | | Rechinger, K. H., ed. 1963-. Flora iranica. |
| 1 | Native | Asia-Temperate | Caucasus | Azerbaijan | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. |
| 1 | Native | Asia-Temperate | Caucasus | Russian Federation | Dagestan | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. |
| 1 | Native | Asia-Temperate | Western Asia | Cyprus | | | Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. |
| 1 | Native | Asia-Temperate | Western Asia | Iran | | | Rechinger, K. H., ed. 1963-. Flora iranica. |
| 1 | Native | Asia-Temperate | Western Asia | Iraq | | | 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-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 | | | Rechinger, K. H., ed. 1963-. Flora iranica. |
| 1 | Native | Asia-Temperate | Western Asia | Turkey | | | Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. |
| 1 | Native | Europe | Southeastern Europe | Albania | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Europe | Southeastern Europe | Bulgaria | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 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 | | incl. Crete | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Europe | Southeastern Europe | Italy | | incl. Sardinia, Sicily | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Europe | Southeastern Europe | Montenegro | | | 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 | Southwestern Europe | France | | incl. Corsica | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Europe | Southwestern Europe | Portugal | | incl. Azores | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Europe | Southwestern Europe | Spain | | incl. Baleares | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Southern America | Southern South America | Chile | Aisén del General Carlos Ibañez del Campo | | Rodriguez, R. et al. 2018. Catálogo de las plantas vasculares de Chile. Gayana, Bot. 75:344. |
| 1 | Native | Southern America | Southern South America | Chile | Arica y Parinacota | | Rodriguez, R. et al. 2018. Catálogo de las plantas vasculares de Chile. Gayana, Bot. 75:344. |
| 1 | Native | Southern America | Southern South America | Chile | Biobío | | Rodriguez, R. et al. 2018. Catálogo de las plantas vasculares de Chile. Gayana, Bot. 75:344. |
| 1 | Native | Southern America | Southern South America | Chile | Maule | | Rodriguez, R. et al. 2018. Catálogo de las plantas vasculares de Chile. Gayana, Bot. 75:344. |
| 1 | Native | Southern America | Southern South America | Chile | Ñuble | | Rodriguez, R. et al. 2018. Catálogo de las plantas vasculares de Chile. Gayana, Bot. 75:344. |
| 1 | Native | Southern America | Southern South America | Chile | Valparaíso | | Rodriguez, R. et al. 2018. Catálogo de las plantas vasculares de Chile. Gayana, Bot. 75:344. |
| 4 | Naturalized | Africa | East Tropical Africa | Kenya | | | Hedberg, I. & S. Edwards. 1989-. Flora of Ethiopia Note: Eritrea added in 2000 |
| 4 | Naturalized | Africa | Northeast Tropical Africa | Ethiopia | | | Hedberg, I. & S. Edwards. 1989-. Flora of Ethiopia Note: Eritrea added in 2000 |
| 4 | Naturalized | Asia-Temperate | Arabian Peninsula | Yemen | | | Wood, J. R. I. 1997. A handbook of the Yemen flora. |
| 4 | Naturalized | Australasia | Australia | Australia | | | Council of Heads of Australasian Herbaria. Australian plant census (APC) (on-line resource). |
| 4 | Naturalized | Northern America | South-Central U.S.A. | United States | Texas | | Hatch, S. L. et al. A checklist of the vascular plants of Texas (on-line resource). |
| 4 | Naturalized | Northern America | Southwestern U.S.A. | United States | California | | CalFlora Database Project. CalFlora: a botanical resource for California on the internet (on-line resource). |
| 4 | Naturalized | Southern America | Brazil | Brazil | | | Molau, U. 1990. The genus Bartsia (Scrophulariaceae - Rhinanthoideae). Opera Bot. 102:1-99. |
| 4 | Naturalized | Southern America | Southern South America | Argentina | | | Zuloaga, F. O. & O. Morrone, eds. 1996, 1999. Catálogo de las plantas vasculares de la República Argentina. I. Pteridophyta, Gymnospermae y Angiospermae (Monocotyledonae), II. Dicotyledonae. Monogr. Syst. Bot. Missouri Bot. Gard. 60, 74. |
| 4 | Naturalized | Southern America | Southern South America | Uruguay | | | Zuloaga, F. O. & O. Morrone, eds. 1996, 1999. Catálogo de las plantas vasculares de la República Argentina. I. Pteridophyta, Gymnospermae y Angiospermae (Monocotyledonae), II. Dicotyledonae. Monogr. Syst. Bot. Missouri Bot. Gard. 60, 74. |
| 4 | Naturalized | Southern America | Western South America | Peru | | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |