| Hymenoxys |
a genus of herbs found in North America; some species contain the lactone hymenovin, which causes gastroenteritis and vomiting in cattle and sheep. Two common poisonous species are H. odora´ta, the bitterweed, and H. richardso´nii, the pingue or rubberweed.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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