Cirsium altissimum
| Cirsium altissimum | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Clade: | Asterids | 
| Order: | Asterales | 
| Family: | Asteraceae | 
| Genus: | Cirsium | 
| Species: | C. altissimum | 
| Binomial name | |
| Cirsium altissimum | |
| Synonyms | |
| 
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Cirsium altissimum is a North American species of plants in the tribe Cardueae within the family Asteraceae. Common names are tall thistle or roadside thistle. The species is native to the eastern and Central United States.