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Large-Flowered Coreopsis has showy flowers and attractive foliage. For these reasons, it is often available through the nursery trade and cultivated in gardens. This species can be distinguished from other Coreopsis spp. by the ragged appearance of the flower petals, and the linear pinnate leaves that occur along the stems, usually in opposite pairs. The species Coreopsis lanceolata (Sand Coreopsis) has ragged-looking petals, but its leaves are primarily lanceolate or oblanceolate in shape and confined near the base of the central stem. An eastern species that hasn't been observed in Illinois in natural areas, Coreopsis verticillata (Whorled Coreopsis), has leaves with a similar appearance, but they occur in whorls of three along the central stem. Also, the flowers of Whorled Coreopsis don't have a ragged appearance because their petals lack conspicuous outer notches. The narrowness of the leaves of Large-Flowered Coreopsis is somewhat variable, depending on the variety. Return


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© John Hilty

Source: Illinois Wildflowers

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