Verbascum blattaria L.
Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad B-Forb

Verbascum blattaria yellow form B. S. Walters yellow form

Reported by the First Survey, but the earliest extant collections date from 1865 (Ingham Co.), 1871 (Muskegon Co.), and 1888 (Kent Co.); mostly spreading in the 20th century to roadsides and railroads, fields and pastures, disturbed ground (including newly disturbed sites and vacant lots), borders of forests (and clearings).

The corolla is usually yellow, but frequently white [f. erubescens Brügger], very rarely pink.


Allegan County
Alpena County
Antrim County
Arenac County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
Cheboygan County
Clinton County
Emmet County
Grand Traverse County
Gratiot County
Hillsdale County
Ingham County
Ionia County
Isabella County
Jackson County
Kalamazoo County
Kent County
Lake County
Leelanau County
Lenawee County
Livingston County
Luce County
Macomb County
Marquette County
Mason County
Mecosta County
Monroe County
Muskegon County
Newaygo County
Oakland County
Oceana County
Otsego County
Ottawa County
Roscommon 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. November 30, 2022.