Carduus acanthoides
![Carduus acanthoides_Plumeless Thistle__flower_JM DiTomaso](https://www.cal-ipc.org/wp-content/uploads/2017/10/Carduus-acanthoides_Plumeless-Thistle__flower_JM-DiTomaso-300x225.jpg)
- Common name(s): plumeless thistle; bristly thistle; giant plumeless thistle; spiny thistle
- Synonym(s): Carduus fortior
- All names: Carduus acanthoides, Carduus fortior, plumeless thistle, bristly thistle, giant plumeless thistle, spiny thistle