- Dittrichia graveolens is an annual herb with a very rank smell that can grow up to 7.9-51.2 in. (0.2-1.3 m) tall.
- Leaves are alternate, linear, oblong, 0.79-3.9 in. (2-10 cm) long, and soft with entire margins, acute tips, and hairy edges.
- Flower heads are small, bell shaped, 0.18-0.39 in. (4.5-10 mm) long, and found in long loose panicles. Flowers are yellow and 0.16-0.28 in. (4-7 mm) long.
- Fruits are cylindrical, light brown, 0.08 in. (2 mm) long, and narrow at the top then expanded at the base. Seeds are 30 bristles, fluffy, 0.12-0.16 in. (3-4 mm) long attached at the base.
- Ecological Threat
- Dittrichia graveolens can be found in pastures, wastelands, and along roadsides. It is native to the Mediterranean. This plant can cause severe contact dermatitis to humans and can kill livestock.
DiTomaso, J.M., G.B. Kyser et al. 2013. Weed Control in Natural Areas in the Western United States. Weed Research and Information Center, University of California. 544 pp. 
State of Queensland, Department of Primary Industries and Fisheries 
University of California, Jepson Flora Project 
Flora of North America, www.eFloras.org 
California Invasive Plant Council 
USDA NRCS PLANTS 
USDA ARS GRIN 
Images from Bugwood.org