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a genus of perennial herbs of the family Com-positae. The alternate leaves are pinnatisect or entire and usually dentate. The inflorescences are many-flowered heads with an imbricate involucre; they may be solitary or in a panicled or, less frequently, corymbiform common inflorescence. The pink, purple, or white tubular flowers are bisexual or, rarely, unisexual (in this case the plants are dioecious). The fruit is an achene with a pappus.
There are about 70 species, distributed in Eurasia and North Africa. The USSR has about 35 species, growing predominantly in Middle Asia and the Caucasus. S. coronala grows in the central and southern parts of the European USSR, in the Caucasus, in Middle Asia, and in Siberia. The plant is found in meadows, along the edges of forests, and in thickets. It yields a substantial amount of nectar. S. tinctoria (formerly S. inermis). a dioecious species, is found in light forests and thickets in the Baltic region and in the central and southern parts of the European USSR. It yields yellow and green dyes that are used to color wool.