红瑞山茱萸(Cornus alba L.)又叫红瑞木,系山茱萸科山茱萸属的落叶灌木。红瑞山茱萸广泛分布于黑龙江省各山区,但数量不多,稍喜阴,生于林下或林缘。1 形态特征 灌木,高可达3m;树皮暗红色;枝血红色,无毛,初时常被有蜡状白粉,髓心大,白色,皮孔明显,灰白色,散生;芽卵状披针形,长约5mm,先端尖,带紫红色。叶对生,卵形、椭圆形或宽椭圆形,长4～10cm,宽2～5cm,基部通常为圆形、广楔形或两边不等,先端渐尖、锐尖或凸尖;叶全缘,上面绿色,散生伏毛,下 Cornel dogwood (Cornus alba L.), also known as Redwood, is a dogwood genus deciduous shrubs. Hongrui dogwood are widely distributed in mountainous areas in Heilongjiang Province, but a small number, slightly hi negative, was born in the forest or forest edge. 1 morphological characteristics shrubs, up to 3m; bark dark red; branches blood red, glabrous, initially often waxy white powder, pith large, white, lenticel obvious, gray, scattered; bud ovate lanceolate Shape, about 5mm, apex sharp, with purple. Leaves opposite, ovate, oval or broadly elliptic, 4 ~ 10cm long, 2 ~ 5cm wide, usually rounded at base, broadly cuneate or both sides apex, apex acuminate, acute or pointed; leaf entire, above Green, loose hair, next