红瑞木(Cornus alba L.)是山茱萸科山茱萸属的一种落叶灌木,具有丛生基干,呈鲜红色,初生枝嫩绿色,常被白粉,而后转为红色。髓大、白色。叶对生,卵形或长椭圆形,长4～9cm。花小、黄白色,成顶生伞房状聚伞花序,花期5～6月,果熟期8～9月,为斜卵圆形核果。红瑞木自然分布在辽宁、 Redwood (Cornus alba L.) is a deciduous shrub belonging to the genus Cornus of the genus Cornus. It has a cluster of basal stems that are bright red and tender green branches. They are often white powder and then turn red. Pith, white. Leaves opposite, ovate or oblong, 4 ~ 9cm long. Small flowers, yellow-white, into the top of the umbrella-shaped room cyme, flowering from May to June, fruit ripening from August to September, Oblique oval fruit. Redwood natural distribution in Liaoning,