Delphinium

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Delphinium

a genus of the plant family Ranunculaceae which includes the domesticated plants, delphinium and larkspur. One of the commonest causes of plant poisoning in North America.
They contain forty different diterpenoid alkaloids of which methyllycaconitine is believed the major toxic principle. Cause uneasiness, stiff gait, straddled posture and sudden collapse. Animals may die from respiratory paralysis or inhalation of regurgitated ruminal contents.
Include D. andersonii, D. barbeyi, D. brownii, D. geyeri, D. glaucum, D. glauscens, D. nelsonii (D. bicolor, D. menziesii), D. nuttallianum, D. occidentale (D. cucullatum, D. scopulorum), D. parryi, D. ramosum (D. elongatum), D. recurvatum (D. hesperium), D. robustum, D. tricorne, D. trolliform, D. vestitum, D. virescens (D. camporum).