Yellow, dandelion-like flowers with an urn-shaped base. The spiny leaves wrap around the stem.
- Scientific Name: Sonchus asper
- Other Names: Spiny Sowthistle, Spiny-leaved Sow-thistle, Prickly Sowthistle
- Plant Height: 1 - 5 feet
- Flower Size: 0.5 - 0.75 inch
- Flower Color: Yellow
- Bloom Time: March, April, May, June, July
- Petal: Many
- Leaf: Alternate, Clasping, Glossy, Spines, Toothed
- Stem: Reddish, Smooth
- Environment: Dry, Moist, Sun
- Location: Crabtree Creek Greenway, Indian Creek Greenway, Shiloh Greenway