| 2 | Cultivated | | | | | also cult. elsewhere | |
| 2 | Cultivated | Africa | East Tropical Africa | Kenya | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | East Tropical Africa | Tanzania | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | East Tropical Africa | Uganda | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | Northeast Tropical Africa | Chad | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | Northeast Tropical Africa | Ethiopia | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | Northeast Tropical Africa | Sudan | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | Northern Africa | Egypt | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | South Tropical Africa | Zambia | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | South Tropical Africa | Zimbabwe | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | West Tropical Africa | Burkina Faso | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | West Tropical Africa | Ghana | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | West Tropical Africa | Mali | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | West Tropical Africa | Niger | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | West Tropical Africa | Nigeria | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Africa | West Tropical Africa | Senegal | | | PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Caucasus | Armenia | | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Caucasus | Azerbaijan | | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Caucasus | Georgia | | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Caucasus | Russian Federation-Ciscaucasia | Ciscaucasia | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | China | China | | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 2 | Cultivated | Asia-Temperate | Eastern Asia | Japan | | | Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 |
| 2 | Cultivated | Asia-Temperate | Eastern Asia | Korea | | | Mun-Chan, B. et al. 1986. A checklist of the Korean cultivated plants. Kulturpflanze 34:75. |
| 2 | Cultivated | Asia-Temperate | Eastern Asia | Taiwan | | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 2 | Cultivated | Asia-Temperate | Middle Asia | Kazakhstan | | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Middle Asia | Kyrgyzstan | | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Middle Asia | Tajikistan | | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Middle Asia | Turkmenistan | | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Middle Asia | Uzbekistan | | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Russian Far East | Russian Federation | Amur | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Russian Far East | Russian Federation | Primorye | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Siberia | Russian Federation-Eastern Siberia | Eastern Siberia | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Siberia | Russian Federation-Western Siberia | Western Siberia | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Asia-Temperate | Western Asia | Iran | | | Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 |
| 2 | Cultivated | Asia-Temperate | Western Asia | Turkey | | | Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 |
| 2 | Cultivated | Asia-Tropical | Indian Subcontinent | India | | | Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 |
| 2 | Cultivated | Asia-Tropical | Indian Subcontinent | Pakistan | | | Nasir, E. & S. I. Ali, eds. 1970-. Flora of [West] Pakistan. |
| 2 | Cultivated | Asia-Tropical | Indo-China | Thailand | | | Siemonsma, J. S. & Kasem Piluek, eds. 1993. Vegetables. In: Faridah Hanum, I. & L. J. G. van der Maesen, eds., Plant Resources of South-East Asia (PROSEA) 8:68. Note: = Allium cepa Common Onion Group |
| 2 | Cultivated | Asia-Tropical | Malesia | Philippines | | | Siemonsma, J. S. & Kasem Piluek, eds. 1993. Vegetables. In: Faridah Hanum, I. & L. J. G. van der Maesen, eds., Plant Resources of South-East Asia (PROSEA) 8:68. Note: = Allium cepa Common Onion Group |
| 2 | Cultivated | Asia-Tropical | Papuasia | Papua New Guinea | | | Siemonsma, J. S. & Kasem Piluek, eds. 1993. Vegetables. In: Faridah Hanum, I. & L. J. G. van der Maesen, eds., Plant Resources of South-East Asia (PROSEA) 8:68. Note: = Allium cepa Common Onion Group |
| 2 | Cultivated | Australasia | Australia | Australia | | | Lazarides, M. & B. Hince. 1993. CSIRO Handbook of Economic Plants of Australia |
| 2 | Cultivated | Europe | | Europe | | | Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 |
| 2 | Cultivated | Europe | Eastern Europe | Russian Federation-European part | European part | | Afonin, A. N., S. L. Greene, N. I. Dzyubenko, & A. N. Frolov, eds. Interactive agricultural ecological atlas of Russia and neighboring countries. Economic plants and their diseases, pests and weeds (on-line resource). |
| 2 | Cultivated | Northern America | | Canada | | | FNA Editorial Committee. 1993-. Flora of North America. |
| 2 | Cultivated | Southern America | Brazil | Brazil | | | Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 |
| 2 | Cultivated | Southern America | Central America | Belize | | | Balick, M. J. et al. 2000. Checklist of the vascular plants of Belize, with common names and uses. Mem. New York Bot. Gard. 85 |
| 2 | Cultivated | Southern America | Central America | Guatemala | | | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. |
| 2 | Cultivated | Southern America | Western South America | Ecuador | | | Jørgensen, P. M. & S. León-Yánez, eds. 1999. Catalogue of the vascular plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75 |