Barbarea vulgaris R. Br.
Coefficient of Conservatism: *
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Ad B-Forb

Barbarea vulgaris A. A. Reznicek

A common Eurasian weed, often called “wild mustard.” Ubiquitous in dry to wet disturbed places of all kinds, spreading into forests (especially along roads and trails) and onto shores. The earliest Michigan collection seen was made by D. Cooley in 1842 in Macomb Co. By the 1890’s the species was apparently widespread in Michigan but not yet as aggressive as it has now become.

This is a variable species in regard to fruit and foliage. The slender pedicels and slender or narrowly tapered beak are in contrast with those of B. orthoceras and B. verna, especially the latter, and help to give the plant a distinctive aspect once one is familiar with this rather subjective contrast. The fruit in our material does not exceed 2.5 cm long. The foliage of fresh plants has a characteristic glossy dark green appearance. Large patches blooming early in spring are very showy.


Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Eaton County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Ingham County
Ionia County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Montcalm County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ontonagon County
Osceola County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Saginaw County
Sanilac County
Schoolcraft County
Shiawassee County
St. Clair County
St. Joseph County
Tuscola County
Van Buren County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 3, 2022.