Perennial Pepperweed (Lepidium latifolium)

Status:

Listed Noxious Weed In Montana

History:

First Montana Specimen Collected 1

County:

Gallatin

Year:

1935

Habitat:

Growth Habit:

Erect perennial, numerous stems, spreading by seed and deep-seated root stocks.

Leaves:

Alternate, lance shaped, bright green to gray green, waxy, smooth to toothed margins, basal
leaves larger than upper leaves.

Stem:

Branched, smooth, waxy, 1-3 feet tall.

Flower:

Raceme of small white flowers in dense clusters near branch ends.

Roots:

Deep-seated and spreading.

Seeds:

Small, rounded, flattened, slightly hairy, 1/16 inch long, reddish brown.

Other Notes:

Currently no known infestations in the Yellowstone River Corridor.