Cirsium
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Asteridae |
| Order: Asterales |
| Family: Asteraceae |
| Genus: Cirsium |
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Joseph M. DiTomaso(X)
| 18 Images of 6 Subjects | View Subject List | View Image Details | View Thumbnails |
| Subject | Scientific Name | Images |
|---|---|---|
| bull thistle | Cirsium vulgare | 4 |
| Canada thistle | Cirsium arvense | 4 |
| peregrine thistle | Cirsium cymosum | 2 |
| snowy thistle | Cirsium occidentale var. candidissimum | 2 |
| wavyleaf thistle | Cirsium undulatum | 3 |
| yellowspine thistle | Cirsium ochrocentrum | 3 |
