Lepidium ruderale L.
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad A-Forb

A weedy species of Eurasian origin found in open, disturbed roadsides and apparently often in fairgrounds, first collected in Detroit (Wayne Co.), J. Blake in 1877; see Cusick (2002) for more recent occurrences.

The flowers are similar to those of the common L. densiflorum, but the fruit is distinctive: narrower, tapering more toward the apex, which has 2 ± sharply angular lobes. The 2 lobes and the entire apex in outline are more rounded in L. densiflorum.


Lapeer County
Lenawee County
Saginaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 16, 2022. https://michiganflora.net/species.aspx?id=665.