| 1 | Native | Africa | East Tropical Africa | Kenya | | | Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa. |
| 1 | Native | Africa | East Tropical Africa | Tanzania | | | Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa. |
| 1 | Native | Africa | Macaronesia | Spain | Canarias | | Carlón, L. et al. 2005-. Index of Orobanchaceae (on-line resource) |
| 1 | Native | Africa | Northeast Tropical Africa | Ethiopia | | | Thulin, M., ed. 1993-. Flora of Somalia. |
| 1 | Native | Africa | Northeast Tropical Africa | Somalia | | | Thulin, M., ed. 1993-. Flora of Somalia. |
| 1 | Native | Africa | Northeast Tropical Africa | Sudan | | n.e. | |
| 1 | Native | Africa | Northeast Tropical Africa | Yemen | Arkhabīl Suquţrá | | Al-Rawi, A. 1985-. Flora of Kuwait. |
| 1 | Native | Africa | Northern Africa | Algeria | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | Northern Africa | Egypt | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | Northern Africa | Libya | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | Northern Africa | Morocco | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Africa | Northern Africa | Tunisia | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Asia-Temperate | Arabian Peninsula | Kuwait | | | Al-Rawi, A. 1985-. Flora of Kuwait. |
| 1 | Native | Asia-Temperate | Arabian Peninsula | Oman | | | Ghazanfar, S. A. 1992. An annotated catalogue of the vascular plants of Oman. Scripta Botanica Belgica 2 |
| 1 | Native | Asia-Temperate | Arabian Peninsula | Saudi Arabia | | | Migahid, A. M. 1988-1990. Flora of Saudi Arabia, ed. 3. |
| 1 | Native | Asia-Temperate | Arabian Peninsula | Yemen | | | Wood, J. R. I. 1997. A handbook of the Yemen flora. |
| 1 | Native | Asia-Temperate | Caucasus | Armenia | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. |
| 1 | Native | Asia-Temperate | China | China | Sichuan Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Xinjiang Uygur Zizhiqu | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Xizang Zizhiqu | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | Middle Asia | Kazakhstan | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. |
| 1 | Native | Asia-Temperate | Middle Asia | Kyrgyzstan | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. |
| 1 | Native | Asia-Temperate | Middle Asia | Tajikistan | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. |
| 1 | Native | Asia-Temperate | Middle Asia | Turkmenistan | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. |
| 1 | Native | Asia-Temperate | Middle Asia | Uzbekistan | | | Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. |
| 1 | Native | Asia-Temperate | Western Asia | Afghanistan | | | Rechinger, K. H., ed. 1963-. Flora iranica. |
| 1 | Native | Asia-Temperate | Western Asia | Egypt | Sinai | | 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 | 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 | | | 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 | India | | n. | Hara, H. et al. 1978-1982. An enumeration of the flowering plants of Nepal. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Nepal | | | Hara, H. et al. 1978-1982. An enumeration of the flowering plants of Nepal. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Pakistan | | | Nasir, E. & S. I. Ali, eds. 1970-. Flora of [West] Pakistan. |
| 1 | Native | Australasia | Australia | Australia | | | Carlón, L. et al. 2005-. Index of Orobanchaceae (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 | Hungary | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 1 | Native | Europe | Northern Europe | United Kingdom | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 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 | | incl. Crete | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Europe | Southeastern Europe | Italy | | incl. Sicily | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Europe | Southeastern Europe | Malta | | | Greuter, W. et al., eds. 1984-. Med-Checklist. |
| 1 | Native | Europe | Southeastern Europe | Romania | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 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 | Spain | | | Tutin, T. G. et al., eds. 1964-1980. Flora europaea. |
| 4 | Naturalized | Europe | Middle Europe | Slovakia | | | Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). |