Thlaspi-arvense (Stinkweed) - photos and description

Stem leaf in above photo.

General: Hairless annual plants with deep green leaves, often branching above. The foliage gives a strong, unpleasant scent when bruised.

Flowers: Small white flowers grow in dense terminal racemes, the racemes lengthening as fruit forms. We measured a flower at 3 mm in diameter.

Fruit: The pods are flat, orbicular, winged, with a notch at their apex. We measured a pod at 13 mm long by 12 mm wide.

Leaves: Basal leaves spatulate to oblanceolate in shape, wither once flowering begins. Lowest leaves with a short petiole, upper leaves clasping with auricles. Stem leaves alternate. Upper leaves oblong and have a few teeth. We measured a leaf mid-stem at 40 mm long by 12 mm wide.

Height: Height listed in Budd's Flora to 40 cm, we measured plants to 49 cm tall.

Habitat: Fields and waste places.

Abundance: Common.

Origin: Introduced.

When and where photographed: Above photos taken June 30th, cultivated soil, Wascana Park, Regina, SK, and July 19th, cultivated soil, University of Regina, in our home in Regina, SK.