Cinnamomum camphora (L.) J. Presl is a typical tree species in the subtropical broad-leaved forest. It is native to China, south of the Yangtze River, southern Japan, Korea, and Vietnam, and has been introduced to many other countries (Li et al., 2013). In the 1800s, it was introduced to Australia and the southeastern United States, and has become naturalized in many areas (Natural Resources Conservation Service, 2010). Because of its broadly ovate crown and lush foliage, C. camphora is ideal for roadside plantings, windbreaks, and shade trees. It can also be used to extract camphor and camphor oil for pharmaceutical use and as a flavoring. At present, C. camphora is widely used as an important urban tree in many Chinese cities such as Hangzhou, Ningbo, and Taizhou (Zhejiang Province); Changsha and Changde (Hunan Province); Suzhou and Wuxi (Jiangsu Province); Nanchang (Jiangxi Province); and Mianyang (Sichuan Province). Therefore, breeding and selection of improved cultivars is important to enhance urban and landscape use. At the time of writing, six new cultivars were selected or bred. C. camphora ‘Longnaozhang L-1’ and C. camphora ‘Longnao 1’ can be used for the production of camphor, which have been selected or bred by the Hunan Province Xinhuang Camphor Development Co., Ltd. and the Jiangxi ProvinceForest Research Institute, respectively. ‘Fireworks Camphor Tree’ is the second registered ornamental cultivar of Cinnamomum and is characterized by its drooping branches. As leaf color is one of the most important ornamental traits of a tree species, breeding for variations in leaf colors is an important objective of new ornamental cultivars. After more than 10 years of continuous work, three cultivars: C. camphora ‘Yongjin’ (the first registered ornamental cultivar of Cinnamomum), C. camphora ‘Xiaguang’, and C. camphora ‘Yuhuang’, were bred by researchers in Ningbo Forestry Bureau of Zhejiang Province and Zhejiang Agriculture and Forestry University. These cultivars exhibit yellow or red leaves that stay on the branch for a longer period. These characteristics provide higher ornamental value to the cultivars compared with common camphor trees.
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