| Noun | 1. | genus Picris - genus of weedy Old World yellow-flowered herbs usually containing a bitter-tasting substance: bitterweed asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs aster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia bitterweed, bristly oxtongue, oxtongue, Picris echioides, bugloss - widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States |