A plant of the daisy family, with inconspicuous yellow flowers and small barbed fruit which cling to passing animals. Several kinds are widespread weeds.
刺果万寿菊，鬼针草。亦称BEGGARTICKS
Genus Bidens, family Compositae: several species, in particular B. frondosa
Example sentencesExamples
Half has been left for the orange foxtail, bur-marigolds (after discussions last year).
Next of kin to the golden coreopsis, it behooves some of the bur-marigolds to redeem their clan's reputation for ugliness.
In the fall, bur-marigolds, also known as beggar-ticks because their barbed fruit stick to clothing, provide a spectacular display of yellow flowers.
Resulting achenes are numerous, strongly flattened and bear the classic two awns which aid in seed dispersal and give rise to the common names used to describe this species, including beggar-ticks, stick tights and bur-marigolds.