[The Mustard Family East of the Cascade Mts.]

The Genus Thlaspi East of the Cascade Mts.

Glaucous Pennycress

Field Pennycress: Thlaspi arvense - Glabrous annual. Pods roundish with a broad margin and a deep notch at the top.

Glaucous Pennycress, Rock Pennycress: Thlaspi montanum (formerly Thlaspi glaucum or T. alpestre) - Glaucous perennial. Pod shield-shaped with a narrow margin, the top either not notched or shallowly notched.


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