| Hymenoxys | |
|---|---|
| | |
| Hymenoxys hoopesii | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Helenieae |
| Subtribe: | Tetraneurinae |
| Genus: | Hymenoxys Cass. |
| Type species | |
| Hymenoxys anthemoides (Juss.) Cass. [1] | |
| Synonyms [2] | |
| |
Hymenoxys (rubberweed or bitterweed) is a genus of plants in the sunflower family, native to North and South America. [3] [1] [4] It was named by Alexandre Henri Gabriel de Cassini in 1828. [1]
Plants of this genus are toxic to sheep due to the presence of the sesquiterpene lactone hymenoxon. [5] [6] [7]