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|Noun||1.||genus Helenium - genus of American herbs with flowers having yellow rays: sneezeweeds|
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
sneezeweed - any of various plants of the genus Helenium characteristically causing sneezing