|
Photographer: Stephen L. Solheim
|
Family Asteraceae
Xanthium strumarium L.
common cocklebur, rough cocklebur
Xanthium: from a Greek word meaning "yellow"
strumarium: of or pertaining to tumors or ulcers; rough
Hazardous 
|
|
| Status: | Native |
| Plant: | erect, annual, 8"-18" tall forb |
| Flower: | head green; inflorescence of several heads at the ends of the stem and from the leaf axils; blooms Aug.-Sept. |
| Fruit: | thick, dry seeds clustered in a 1/3" - 1 1/3" oblong bur with heavy, hooked prickles |
| Leaf: | long-stalked, widely oval to kidney-shaped and with a heart-shaped base |
| Habitat: | disturbed sites, fields |
| (Glossary) |
|
