stinkwort
(Dittrichia graveolens)
This species is Introduced in the United States
Appearance
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.
Foliage
Leaves are alternate, linear, oblong, 0.79-3.9 in. (2-10 cm) long, and soft with entire margins, acute tips, and hairy edges.
Flowers
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.
Fruit
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.
Citations
Winston, R.L., Andreas, J.E., Milan, J., DesCamp, W., Randell, C.B., and M. Schwarzlander. 2014. New Invaders of the Southwest. United States Department of Agriculture, Forest Health Technology Enterprise Team. FHTET-2014-12. Retrieved from https://bugwoodcloud.org/resource/files/14767.pdf
Winston, R.L., Andreas, J.E., Milan, J., DesCamp, W., Randell, C.B., and M. Schwarzländer. 2014. New Invaders of the Northwest. United States Department of Agriculture, Forest Health Technology Enterprise Team. FHTET-2014-12. Retrieved from https://www.fs.fed.us/foresthealth/technology/pdfs/FHTET-2014-12_NW_New_Invaders.pdf
Selected Images
Maps
EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Lists - This map identifies those states that have this species on their invasive species list or law.
Invasive Listing Sources
Taxonomic Rank
| Domain: Eukarya |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Superorder: Asteranae |
| Order: Asterales |
| Family: Asteraceae |
| Genus: Dittrichia |
| Dittrichia graveolens |
References
Common Name Reference: USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.
Scientific Name Reference: USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.