Taxon - Links and literature
Kew Science - Plants of the World online 2024-05 [3370-2]
Kew Science - Plants of the World online [https://powo.science.kew.org], Facilitated by the Royal Botanic Gardens, Kew [as Aconitum columbianum var. howellii (A.Nelson & J.F.Macbr.) C.L.Hitchc.]
Data retrieved on: 30 January 2025