parthenium hysterophorus

English Thesaurus

1. tropical American annual weed with small radiate heads of white flowers; adventive in southern United States (noun.plant)

hypernym	:	weed,
definition	:	any plant that crowds out cultivated plants (noun.plant)

member meronym	:	genus parthenium, parthenium,
definition	:	small genus of North American herbs and shrubs with terminal panicles of small ray flowers (noun.plant)