沂州海棠(Chaenomeles‘yizhou’)是临沂市的市花,为蔷薇科木瓜属(Chaenomeles)重要的观赏植物。沂州海棠是当地群众经过长期选育而成的海棠品种,为多年生落叶灌木,垂直根少,侧根多,萌芽力和成枝力均强,以二年生枝开花为主,花簇生,每簇3朵～5朵,单瓣或复瓣,单瓣花5片,复瓣花15片以上。花色有红、白、粉、深红、艳阳红等,花期3月底至4月末。有些品种除良好 Chaenomeles’yizhou ’is the flower of Linyi and is an important ornamental plant of Chaenomeles. Begonia Yizhou is the local people after long-term breeding of Begonia varieties, perennial deciduous shrubs, less vertical roots, lateral roots, sprouting and branching force are strong, with biennial branches flowering, flower clusters, each cluster 3 Duo ~ 5, single or double flap, single flap 5, multi-flap 15 or more. Color red, white, pink, dark red, sunny red, flowering end of March to the end of April. In addition to some varieties of good