COREOPSIS

coreopsis, tickseed, tickweed, tick-weed

(noun) any of numerous plants of the genus Coreopsis having a profusion of showy usually yellow daisylike flowers over long periods; North and South America

Source: WordNet® 3.1

Etymology

Noun

coreopsis (plural coreopses or coreopsises)

Any of several composite herbs, of genus Coreopsis, typically with bright yellow flowers.

Source: Wiktionary

Co`re*op"sis (k`r-p"ss), n. Etym: [NL., fr. GR. (Bot.)

Definition: A genus of herbaceous composite plants, having the achenes two- horned and remotely resembling some insect; tickseed. C. tinctoria, of the Western plains, the commonest plant of the genus, has been used in dyeing.

Source: Webster’s Unabridged Dictionary 1913 Edition