cardamine douglasii(n = noun.plant) purple cress - small perennial herb of cooler regions of North America with racemose purple flowers; Array
is a kind of bitter cress, bittercress

cardamine, cardamine bulbifera, cardamine bulbosa, cardamine diphylla, cardamine pratensis, cardamine rotundifolia, genus cardamine, micromeria douglasii, satureja douglasii, tanacetum douglasii