| Taxon | Cicuta douglasii |
| group | Eudicots |
| Family | Apiaceae |
| Family common name(s) | umbel; umbelwort; umbelworts; carrot; parsley; biscuitroot |
| Genus common name(s) | water-hemlock; water hemlock; waterhemlock; musquash-root; musquash root; musquashroot |
| Species common name(s) | Douglas's water-hemlock; Douglas's water hemlock; Douglas's waterhemlock; Douglas' water-hemlock; Douglas' water hemlock; Douglas' waterhemlock; Douglas water-hemlock; Douglas water hemlock; Douglas waterhemlock; western water-hemlock; western water hemlock; western waterhemlock; western musquash-root; western musquash root; western musquashroot |
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| Common name(s) specific to synonym; taxon noted in brackets | California water-hemlock [Cicuta californica]; California water hemlock [Cicuta californica] |
| Common name(s) generally applied to other taxa or multiple taxa | poison hemlock, poison-hemlock are more commonly applied to Conium; snakeweed, snake-weed, snake weed are applied to taxa in multiple families |
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| Notes | Douglas is a proper name, so upper case preferable; Dougla's is an error |
| Synonymy: The Jepson Manual (1993), FNA, PLANTS, etc | Cicuta maculata L. var. californica (A. Gray) B. Boivin; Cicuta californica A. Gray |
