University of Missouri Extension

IPM1007, Revised November 2009

Practical Weed Science for the Field Scout: Corn and Soybean

Pennycress, thoroughwort (Microthlaspi perfoliatum)

Winter annual broadleaf

Pennycress, thoroughwortPennycress, thoroughwort
Pennycress, thoroughwortA winter annual weed of roadsides, landscapes and occasionally no-tillage agronomic crops. Basal rosette leaves occur on petioles, are without hairs, and are elliptic to oblong in outline. Leaves on the flowering stem have rounded bases that clasp the stem and become progressively smaller toward the top. Flowers occur in the upper portions of the terminal inflorescence and are very small (3 mm long, 1 mm wide) and consist of four white petals with yellow anthers in the center. The fruit closely resembles that of shepherd’s-purse, but is generally more heart shaped, less triangular in outline, and larger than that of shepherd’s-purse.
 

 

Wild thing
 

IPM1007 Practical Weed Science for the Field Scout: Corn and Soybean | University of Missouri Extension

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