| 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 | East Tropical Africa | Uganda | | | Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa. |
| 1 | Native | Africa | Northeast Tropical Africa | Somalia | | | Thulin, M., ed. 1993-. Flora of Somalia. |
| 1 | Native | Africa | Northeast Tropical Africa | Sudan | | | |
| 1 | Native | Africa | South Tropical Africa | Angola | | | |
| 1 | Native | Africa | South Tropical Africa | Malawi | | | Exell, A. W. et al., eds. 1960-. Flora zambesiaca. |
| 1 | Native | Africa | South Tropical Africa | Mozambique | | | Exell, A. W. et al., eds. 1960-. Flora zambesiaca. |
| 1 | Native | Africa | South Tropical Africa | Zambia | | | Exell, A. W. et al., eds. 1960-. Flora zambesiaca. |
| 1 | Native | Africa | South Tropical Africa | Zimbabwe | | | Exell, A. W. et al., eds. 1960-. Flora zambesiaca. |
| 1 | Native | Africa | Southern Africa | Botswana | | | Exell, A. W. et al., eds. 1960-. Flora zambesiaca. |
| 1 | Native | Africa | Southern Africa | Eswatini | | | |
| 1 | Native | Africa | Southern Africa | Lesotho | | | |
| 1 | Native | Africa | Southern Africa | Namibia | | | |
| 1 | Native | Africa | Southern Africa | South Africa | Cape Province | | |
| 1 | Native | Africa | Southern Africa | South Africa | Free State | | |
| 1 | Native | Africa | Southern Africa | South Africa | KwaZulu-Natal | | |
| 1 | Native | Africa | Southern Africa | South Africa | Transvaal | | |
| 1 | Native | Africa | West-Central Tropical Africa | Burundi | | | |
| 1 | Native | Africa | West-Central Tropical Africa | Central African Republic | | | |
| 1 | Native | Africa | West-Central Tropical Africa | Congo | | | |
| 1 | Native | Africa | West-Central Tropical Africa | Democratic Republic of the Congo | | | |
| 1 | Native | Africa | West-Central Tropical Africa | Rwanda | | | |
| 1 | Native | Africa | Western Indian Ocean | Madagascar | | | |
| 1 | Native | Africa | Western Indian Ocean | Mauritius | | | |
| 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 | China | China | Fujian Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Guangdong Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Guangxi Zhuangzu Zizhiqu | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Guizhou Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Hunan Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Jiangxi Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Yunnan Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Bhutan | | | |
| 1 | Native | Asia-Tropical | Indian Subcontinent | India | | | |
| 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 | Sri Lanka | | | Dassanayake, M. D. & F. R. Fosberg, eds. 1980-. A revised handbook to the flora of Ceylon. Note: = Striga lutea Lour. |
| 1 | Native | Asia-Tropical | Indo-China | Cambodia | | | Aubréville, A. et al., eds. 1960-. Flore du Cambodge du Laos et du Viet-Nam. Note: = Striga lutea Lour. |
| 1 | Native | Asia-Tropical | Indo-China | Myanmar | | | |
| 1 | Native | Asia-Tropical | Indo-China | Thailand | | | Smitinand, T. & K. Larsen, eds. 1970-. Flora of Thailand. |
| 1 | Native | Asia-Tropical | Indo-China | Vietnam | | | Aubréville, A. et al., eds. 1960-. Flore du Cambodge du Laos et du Viet-Nam. Note: = Striga lutea Lour. |
| 1 | Native | Asia-Tropical | Malesia | Indonesia | | | |
| 1 | Native | Asia-Tropical | Malesia | Malaysia | | | |
| 1 | Native | Asia-Tropical | Malesia | Philippines | | | |
| 4 | Naturalized | | | | | natzd. elsewhere | |
| 4 | Naturalized | Australasia | Australia | Australia | Queensland | e.-c. | 2013. Class 1 declared plants: Striga spp. (witchweeds). Bull. Weed Spotters' Network Queensland August issue: 3. |