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Weeds and Plant Identification
Field pennycress - Thlaspi arvense

Field pennycress plant

Flowers

Rosette

Fruit
 

 
Field pennycress Thlaspi arvense L.
Brassicaceae (Mustard family)
 
Life cycle
Erect winter or summer annual.
 
Leaves
Leaves initially develop from a basal rosette. Lower leaves are oval to spatula-shaped with wavy to slightly toothed margins, rounded tips and distinct petioles. Upper leaves are alternate with toothed to smooth margins and clasping bases. Basal leaves fall off before maturity.
 
Stems
Erect, mostly 2-foot-tall stems with varied branching bolt from a basal
rosette to flower.

Flowers and fruit
White flowers with four small petals are found in terminal clusters. Fruit are flat, round to oval, distinctly winged, 1/2-inch-wide pods with a prominent notch at the tip.
 
Reproduction
Seeds.

Diagnostic Services
Diagnostic Services

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