Cirsium
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Asteridae |
| Order: Asterales |
| Family: Asteraceae |
| Genus: Cirsium |
| 21 Images of 5 Subjects | View Subject List | View Image Details | View Thumbnails |
| Subject | Scientific Name | Images |
|---|---|---|
| bull thistle | Cirsium vulgare | 6 |
| Canada thistle | Cirsium arvense | 3 |
| field thistle | Cirsium discolor | 7 |
| soft thistle | Cirsium carolinianum | 3 |
| yellow thistle | Cirsium horridulum | 2 |
