Thlaspi arvense L.
Family: Brassicaceae
field pennycress
Thlaspi arvense image
Emmet J. Judziewicz  
Thlaspi arvense image
Merel R. Black  
Etymology: Thlaspi: from Greek thlaein, "to crush," from the flattened silicle, and the Greek name for a cress
Plants: erect, annual, 4"-20" tall forb, smooth, rank odor
Leaves: stalkless, base with 2 narrow lobes
Flowers: white, 4-parted, 1/8" wide, petals 2 times as long as the sepals; inflorescence a cluster (raceme) of stalked flowers; blooms April-June
Fruits: roundish, 1/2" wide pod, erect, winged all around, the notch at the tip deeper than wide
Habitat: disturbed sites
Hazardous: Careful, this plant is hazardous!
Conservation Status: Introduced - naturalized
Thlaspi arvense image
Merel R. Black  
Thlaspi arvense image
Matthew L. Wagner  
Thlaspi arvense image
Thlaspi arvense image
Merel R. Black  
Thlaspi arvense image
Merel R. Black  
Thlaspi arvense image
Merel R. Black  
Thlaspi arvense image
Robert W. Freckmann  
Thlaspi arvense image
Merel R. Black  
Thlaspi arvense image
Kenneth J. Sytsma  
Thlaspi arvense image
Botanical Illustration  
Thlaspi arvense image
Botanical Illustration  
Thlaspi arvense image
Thlaspi arvense image
Thlaspi arvense image
Thlaspi arvense image
Thlaspi arvense image
Thlaspi arvense image