white false hellebore

American  

[hwahyt fawls hel-uh-bawr, wahyt] / ˈʰwaɪt ˌfɔls ˈhɛl əˌbɔr, ˈwaɪt /

noun

1. a false hellebore, Veratrum californicum, with clusters of white flowers, native to western North America: its teratogenic leaves, stems, and roots present the risk of severe fetal deformities for livestock and other mammals that graze upon them.

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Etymology

Origin of white false hellebore

First recorded in 1900–05