• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Wildflowers - Field Pennycress

Field Pennycress, Frenchweed - Thlaspi arvense
Field Pennycress, Frenchweed - Thlaspi arvense
NPS Photo by Jim Pisarowicz
 
Field Pennycress seeds are poisonous to livestock but birds eat the seeds without poisoning.

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