| Noun | 1. | Tetraneuris - genus of hairy yellow-flowered plants of the western United States 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 Hymenoxys acaulis, stemless hymenoxys, Tetraneuris acaulis - perennial having tufted basal leaves and short leafless stalks each bearing a solitary yellow flower head; dry hillsides and plains of west central North America alpine sunflower, Hymenoxys grandiflora, old man of the mountain, Tetraneuris grandiflora - whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States |