co·re·op·sis /ˌkoriˈɑpsəs, ˌkɔr-/
  波斯菊
  Co·re·op·sis prop. n.  Bot. A genus of herbaceous composite plants, having the achenes two-horned and remotely resembling some insect; tickseed.  Coreopsis tinctoria, of the Western plains, the commonest plant of the genus, has been used in dyeing.
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  coreopsis
       n : any of numerous plants of the genus Coreopsis having a
           profusion of showy usually yellow daisylike flowers over
           long periods; North and South America [syn: tickseed, tickweed,
            tick-weed]