形态特征晚霞紫荆系紫叶加拿大紫荆的芽变,落叶灌木。枝干下垂,自然开张。树皮棕黑色,老枝棕褐色,嫩枝紫红色,皮孔较明显。单叶,心形,长6cm~12cm,宽5cm~1 1cm;叶色春季紫红色或亮红色,夏秋两季枝条新叶仍为红色,老叶转绿带紫晕,叶背淡紫色,无毛。具叶柄,叶柄长3cm~4cm,紫红色。先花后叶,花朵4cm~10cm,簇生在垂枝上,花梗长0.6cm~1.5cm,萼红色,花冠粉红色,花形似蝶, The sunset Bauhinia purple leaves Canadian Bauhinia bud change, deciduous shrubs. Branches drooping, naturally opened. Bark brown black, old branches brown, purple shoots, lenticels more obvious. Single leaves, heart-shaped, long 6cm ~ 12cm, width 5cm ~ 1 1cm; leaf color spring purple or bright red, summer and autumn branches still new leaves red, green leaves with purple halo, hair. Petiole, petiole length 3cm ~ 4cm, purple. First flower after the leaves, flowers 4cm ~ 10cm, tufted on the weeping sticks, pedicel 0.6cm ~ 1.5cm long, red calyx, corolla pink, flower-shaped butterfly,