<i>Parrya nauruaq</i> (Brassicaceae), a New Species from Alaska

<i>Parrya nauruaq</i> Al-Shehbaz, J. R. Grant, R. Lipkin, D. F. Murray & C. L. Parker (Brassicaceae) is described from the Seward Peninsula of Alaska. It differs from the other North American species in <i>Parrya</i> R. Brown by its smaller flowers and fruits, and by its fewer seeds per fruit. A key to the four North American species of <i>Parrya</i> is provided.