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Definition of COREOPSIS
: any of a genus (Coreopsis) of widely cultivated composite herbs with showy often yellow flower heads and pinnately lobed or dissected leaves
Origin of COREOPSIS
New Latin, genus name, from Greek koris bedbug + New Latin -opsis; akin to Greek keirein to cut — more at shear
First Known Use: circa 1753
Any ornamental summer-blooming plant of the genus Coreopsis, commonly known as tickseed, in the aster family (Asteraceae), consisting of about 115 species of annual and perennial herbaceous plants native to North America. Members have flower heads with yellow disk flowers and yellow, pink, white, or variegated ray flowers. The heads are solitary or in branched clusters, and some varieties have double flowers. Golden coreopsis (C. tinctoria) is a popular garden plant; swamp tickseed (C. rosea) is grown in wildflower gardens.