European hawkweed having flower heads with bright orange-red rays; a troublesome weed especially as naturalized in northeastern North America; sometimes placed in genus Hieracium. 有橘红色边花头状花序的欧洲山柳菊;已在北美洲归化,很难根除;有时归为山柳菊属。
hawkweed
[ noun ]
any of various plants of the genus Pilosella
<noun.plant>
any of numerous often hairy plants of the genus Hieracium having yellow or orange flowers that resemble the dandelion
<noun.plant>
Hawkweed \Hawk"weed`\ (-w[=e]d`), n. (Bot.) (a) A plant of the genus {Hieracium}; -- so called from the ancient belief that birds of prey used its juice to strengthen their vision. (b) A plant of the genus {Senecio} ({Senecio hieracifolius}). --Loudon.