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tickseed,names for species of Coreopsis, a chiefly North American genus of the family Asteraceae (asteraster
[Gr.,=star], common name for the Asteraceae (Compositae), the aster family, in North America, name for plants of the genus Aster, sometimes called wild asters, and for a related plant more correctly called China aster (Callistephus chinensis
..... Click the link for more information. family). They are easily cultivated annuals or perennials with daisylike heads of flowers in various colors—commonly yellow or variegated. Garden kinds are sometimes called calliopsis. Coreopsis is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
..... Click the link for more information. , class Magnoliopsida, order Asterales, family Asteraceae.
(tickseed), a genus of plants of the family Compositae. They are annual or perennial grasses; less often they are subshrubs or shrubs. The leaves are entire or dissected. The inflorescence is a head, usually with infertile ligulate flowers and bisexual tubular disk-flowers. The achenes have poorly developed awns or are awnless. There are approximately 120 species, distributed primarily in America; less frequently they are found in tropical Africa and on the Hawaiian Islands. Several species are used as ornamentals, including the annuals Coreopsis tinetoria and golden wave (C. basalts, or C. drummondii ) and the perennial C. grandiflora. The forms and varieties of C. tinctoria and golden wave are distinguished by their height (15–100 cm) and by the color of the ligulate flowers (yellow, dark red, reddish brown, or bicolor). C. grandiflora is cultivated particularly for cutflowers.