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Silybum marianum (L.) Gaertn.
Common Name: MILK-THISTLE, BLESSED THISTLE
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad B-Forb

Silybum marianum R. W. Smith

Native to southern Europe, northern Africa, and the Near East, occasionally escaped from cultivation. First collected in 1890 in Cheboygan Co.

The large, auriculate, scarcely lobed leaves are spiny-margined, and the strikingly large phyllaries are spine-tipped besides having spiny margins on the expanded bases.

Locations

Cheboygan County
Kent County
St. Clair County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 30, 2023. https://michiganflora.net/species.aspx?id=449.