Kerria
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| Kerria japonica (L.) DC. |
Kerria japonica, the sole species in the genus Kerria, is a deciduous shrub in the rose family Rosaceae, native to eastern Asia, in China, Korea and Japan. It is named after William Kerr, who introduced the cultivar 'Pleniflora'. The scientific genus name is also used as a common name Kerria.
It grows to 1-3 m tall, with weak arching stems often scrambling over other vegetation or rocks. The leaves are alternate, simple, 4-7 cm long, with a sharply serrated margin. The flowers are bright yellow, with five petals. The fruit is a dry single-seeded achene 5 mm long.
[edit] Cultivation and uses
Kerria is a very popular ornamental plant in gardens, almost invariably using the double-flowered cultivar 'Pleniflora'.
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