Family: Brassicaceae
field pennycress
Emmet J. Judziewicz
Merel R. Black
University of Wisconsin - Madison (WIS-VP)
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
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
Fields, pastures, roadsides, railroads, waste areas, dumps, gardens, lawns, farmyards, agricultural fields, roadcuts, construction sites; sometimes invading degraded prairies, rock outcrops, riverbanks, and woodland borders. One of our most common mustards, a European introduction first collected in 1897.
Flora of North America: Flora of North America Floristic Rating: Wetland Indicator = NI USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"
Merel R. Black
Matthew L. Wagner
Merel R. Black
Robert W. Freckmann
Merel R. Black
Kenneth J. Sytsma
Merel R. Black
Merel R. Black
Botanical Illustration
Botanical Illustration
