Species
Delphinium trolliifolium (Columbian larkspur)
Delphinium trolliifolium. Photo: (c) adavila99, some rights reserved (CC BY-NC)
Delphinium trolliifolium is a species of larkspur known by the common names poison delphinium, cow poison, and Columbian larkspur. It is native to Oregon and northern California. This wildflower reaches one half to just over one meter in height. It has large, shiny, deeply lobed leaves. The top half of the stem is an inflorescence of widely spaced flowers on long pedicels, the longest over nine centimeters long. The flowers are usually deep brilliant blue. The…
Sightings
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