Cotinus (/koʊˈtaɪnəs/[2]), the smoketree or smoke bush, is a genus of two species of flowering plants in the family Anacardiaceae, closely related to the sumacs (Rhus).
They are large shrubs or small trees, native to the warm temperate northern hemisphere. The leaves are deciduous, alternate, simple oval shape, 3–13 cm long. The flowers are clustered in a large open terminal panicles 15–30 cm long with a fluffy grayish-buff appearance resembling a cloud of smoke over the plant, from which the name derives. The fruit is a small drupe with a single seed. Often classified in Rhus in the past, they are distinguished by the leaves being simple (not pinnate) and the ‘smoke-like’ fluffy flower heads.
The American smoketree (Cotinus obovatus, syn. Rhus cotinoides) is native to the southeastern United States, from Tennessee south to Alabama and west to Oklahoma and eastern Texas. It is a larger plant, frequently becoming a small tree between 3 and 5 meters (10 to 15 feet) tall, with a trunk from 20 to 35 centimeters (8 to 14 inches) in diameter. The leaves are also larger, 6–13 cm long; it also has varied but very bright fall color, usually brighter than the Eurasian species. The foliage is described to be a red wine-like, and the shrub has deep pink flowers in the summer. The flower heads are usually sparser than in C. coggygria.
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