genus Helenium

Thesaurus

Noun

1.

genus Helenium - genus of American herbs with flowers having yellow rays: sneezeweedsHeleniumasterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubsaster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinniasneezeweed - any of various plants of the genus Helenium characteristically causing sneezing