Roadside Pennycress (Thlaspi alliaceum)
Image ID: 2019/dl006Tap/mouseover and drag to zoom/pan.
Other common names: Garlic Pennycress
Family: Brassicaceae (Mustard)
Height: 0.5 to 1.1 ft.
Blooms: May to June
Leaf Type: toothed
Bloom Size: 0.15 in. (typical)
Flower Description: Elongate clusters, Regular blooms, 4 parts
Location: Delaware and Lehigh Trail
Notes: Garlic odor when crushed.
More photos of this flower
Leaves of pennycress clasp the stem, while the leaves on peppergrass have short stalks.
- Shepherd's Purse
Look for the heart-shaped seed pods on shepherd's purse. Also, pennycress has a small, slightly toothed leaf, while shepherd's purse has a larger lobed leaf.
We started out as wildflowers from the bicycle trails of western Pennsylvania, but we've grown!