Sisymbrium altissimum
(Tumble Mustard)
Sisymbrium altissimum, Fourmile Area, Chaffee Co. 6430
Sisymbrium altissimum, Overland Trail Recreation Area, Sterling, Logan Co. 7173
Sisymbrium altissimum, Divide Rd., Uncompahgre Plateau, Mesa Co. 4501
Sisymbrium altissimum, Fourmile Area, Chaffee Co. 6432
Sisymbrium altissimum, Overland Trail Recreation Area, Sterling, Logan Co. 7164
Sisymbrium altissimum, Divide Rd., Uncompahgre Plateau, Mesa Co. 4516
Basal leaf, Sisymbrium altissimum, Divide Rd., Uncompahgre Plateau, Mesa Co. 4511
Sisymbrium altissimum, Divide Rd., Uncompahgre Plateau, Mesa Co. 4509
| 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 |
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| Description |
Life zones and habitat: Semi-desert to foothills (3500 to 9000 ft); grasslands, fields, roadsides and 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 racemes of pale yellow to yellow flowers; 4 petals about 1/4-inch long; sepals about half as long. Bloom Period: May to October. References: "Flora of Colorado" by Jennifer Ackerfield, Montana Plant Life and SEINet. |
BONAP Distribution Map Map Color Key |
Colorado Status: Introduced |
© Tom Lebsack 2024
Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains