Columbia Aconite, Columbia Monkshood: Aconitum columbianum ssp. columbianum (Synonyms: Aconitum columbianum ssp. pallidum, Aconitum columbianum var. bakeri, Aconitum columbianum var. columbianum, Aconitum columbianum var. ochroleucum, Aconitum columbianum var. pallidum, Aconitum geranioides, Aconitum leibergii, Aconitum mogollonicum)
Columbian Monkshood, Howell's Aconite, Howell's Monkshood: Aconitum columbianum ssp. viviparum (Synonyms: Aconitum bulbiferum, Aconitum columbianum var. howellii, Aconitum hansenii, Aconitum howellii, Aconitum viviparum)