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Yellowstone County, Montana
Noxious Weed
Weed Information Contact Department

Purple Mustard
(Chorispora Tenella)


Purple Mustard

Photos from The American Southwest

Purple Mustard Glandular stem
Glandular stem

Purple Mustard Toothed leaves
Toothed leaves

Purple Mustard Long, sparse hairs
Long, sparse hairs

Purple Mustard Large leaves, small flowers
Large leaves, small flowers

Purple Mustard Hairy calyces
Hairy calyces

Purple Mustard Buds and flowers
Buds and flowers

Photos from The American Southwest


Stem: 1-5 dm, branched from near base

Leaves: Lanceolate to oblong to oblanceolate, up to 3 inches long, with wavy, shallowly lobed or toothed edges

Flower: sepals erect, 6-8 mm, free but forming a tube; petals narrowly clawed, magenta

Habitat: Disturbed ground, roadsides, wasteland, washes, fields, pastures

Range: All the western states

Height: Between 4 and 15 inches

Season: March to June

Elevation: < 1300 m