Bigflower Coreopsis (Coreopsis grandiflora )
Bigflower Coreopsis Coreopsis grandiflora Hogg (COMPOSITE FAMILY)
Bigflower coreopsis is an erect or ascending, highly-branched, glabrous perennial 1-3 ft tall with slender stems arising from a short rhizome. The opposite leaves are pinnately compound or deeply lobed, the divisions linear or lanceolate. The basal and lower leaves are petioled, the upper leaves sessile or nearly so. The inflorescence is of terminal heads with yellow ray florets and yellowish-brown disk florets. The fruit is an orbicular-winged achene.