Sisymbrium altissimum

Click on the images below to see larger versions.

Scientific Name Sisymbrium altissimum USDA PLANTS Symbol
SIAL2
Common Name Tumble Mustard, Jim Hill Mustard ITIS Taxonomic Serial No.
23312
Family Brassicaceae (Mustard) SEINet
Reference
Click Here
Description Life zones and habitat: Semi-desert to foothills. Disturbed areas.
Plant: Erect, freely-branched annual up to 5 feet tall.
Leaves: Alternate leaves oblong in outline and up to 6 inches long, pinnately-lobed with 4 to 6 segments along each side; basal leaves with shallow lobes; stem leaves much more deeply lobed into linear segments almost appearing to be compound.
Inflorescence: Open, branched clusters of pale yellow to yellow flowers; 4 petals about 1/4-inch long; sepals about half as long.
References: Descr. adapted from www.plant-life.org and SEINet.
Colorado Status
Introduced

© Tom Lebsack 2017