Leucanthemum

Leucanthemum 

a genus of perennial herbs of the family Compositae. The alternate leaves are entire or, less frequently, pinnately lobed. The inflorescences are large solitary heads with imbricate involucres. The pistillate ray flowers are ligulate and white; the disk flowers are bisexual, tubular, and yellow. The fruit is an achene with longitudinal ribs. There are approximately 20 species of Leucanthemum, distributed in the temperate zone of Eurasia, primarily in the mountains of Central and Southern Europe. Of the three species found in the USSR, the most common is the daisy Leucanthemum vulgare. The other two species, L. rotundifolium and L. subalpinum, grow in the Carpathians. L. maximum, which is native to the Pyrenees, and L. vulgare, which has double-flowered garden forms, are often cultivated as ornamentals.