n.any of various plants of the genus Vernonia of tropical and warm regions of especially North America that take their name from their loose heads of purple to rose flowers that quickly take on a rusty hue
同义词：ironweed
vernonia例句
Glaucolides from old world Vernonia species Sesquiterpene lactones from Vernonia marginata Further glaucolides from south african Vernonia species Bioactive sesquiterpene lactones from the leaves of Vernonia amygdalina Hirsutinolides and other sesquiterpene lactones from Vernonia species ☆ Hirsutinolides, glaucolides and sesquiterpene lactone from Vernonia species Poskeanolide, a seco-germacranolide and other sesquiterpene lactones from Vernonia species Allenic germacranolides, bourbonene derived lactones and other constituents from Vernonia species In vitro screening of two Nigerian medicinal plants ( Vernonia amygdalina and Annona senegalensis ) for anthelmintic activity Naturally occurring terpene derivatives, 292. The first sesquiterpene lactone with an allenic group [Vernonia cotoneaster]
