Coefficient of Conservatism:
Coefficient of Wetness:
MILK-THISTLE, BLESSED THISTLE
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.