(n)stout perennial herb of western United States having flower heads with drooping orange-yellow rays; causes spewing sickness in sheep, Syn.Helenium hoopesii, owlclaws
(n)Eurasian herb having loose heads of button-shaped white flowers and long grey-green leaves that cause sneezing when powdered, Syn.sneezewort, Achillea ptarmica
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)