| English | carrot-fern | | | 1 | Parsons, W. T. & E. G. Cuthbertson. 1992. Noxious weeds of Australia Inkata Press, Melbourne, Australia. |
| English | fool's-parsley | | | 1 | Der Marderosian, A. & L. Liberti. 1988. Natural product medicine: a scientific guide to foods, drugs, cosmetics |
| English | hemlock | | | 1 | Liberty Hyde Bailey Hortorium. 1976. Hortus third. A concise dictionary of plants cultivated in the United States and Canada |
| English | poison-hemlock | | | 1 | Liberty Hyde Bailey Hortorium. 1976. Hortus third. A concise dictionary of plants cultivated in the United States and Canada |
| English | spotted-hemlock | | | 1 | Liberty Hyde Bailey Hortorium. 1976. Hortus third. A concise dictionary of plants cultivated in the United States and Canada |
| English | spotted-parsley | | | 1 | Der Marderosian, A. & L. Liberti. 1988. Natural product medicine: a scientific guide to foods, drugs, cosmetics |
| English (Canada) | poison hemlock | | Agriculture & Agri-Food Canada official name | 2 | Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 185. |
| French | grande ciguë | | | 2 | Demilly, D. et al. 2001. Liste alphabétique des principales espèces de plantes cultivées et de mauvaises herbes. Noms latins et noms français, ed. 7 GEVES-SNES, Beaucouzé, France. |
| French (Canada) | ciguë maculée | | Agriculture & Agroalimentaire Canada nom officiel | 2 | Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 185. |
| French (Canada) | cigüe maculée | | | 2 | Brouillet, L., F. et al., compilers. 2010. Database of vascular plants of Canada (VASCAN) (on-line resource) |
| Portuguese (Brazil) | cicuta | | | 2 | Groth, D. 2005. In: , pers. comm. Note: re. Brazilian common names |
| Portuguese (Brazil) | funcho-selvagem | | | 2 | Groth, D. 2005. In: , pers. comm. Note: re. Brazilian common names |
| Spanish | encaje cimarrón | | | 2 | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| Spanish | panalillo | | | 2 | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| Spanish | zanahoria silvestre | | | 2 | Davidse, G. et al., eds. 1994. Flora mesoamericana. |
| Spanish (Guatemala) | perejil de chucho | | | 2 | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. |
| Spanish (Guatemala) | perejil de monte | | | 2 | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. |
| Swedish | odört | | | 2 | Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource) |