Abstract: Tabebuia and Handroanthus (Bignoniacaea) species are famous woody plants in the world, and are widely cultivated in Shenzhen. However, some species are phenotypically similar, making them difficult to distinguish. Additionally, there is considerable confusion in the use of their Chinese names and Latin names. The article investigated and described in detail the types, phenotypes, and phenological characteristics of Tabebuia and Handroanthus species cultivated in the urban greenland from Shenzhen. It also conducts comparative analyses by reviewing relevant data and literature, aiming to provide scientific basis for the identification of phenotypic traits and germplasm evaluation of Tabebuia and Handroanthus species. The results showed that among the urban greenland in Shenzhen, six species from two genera (Handroanthus and Tabebuia) were primarily cultivated. Among these, there were three species with red flowers: Handroanthus impetiginosus, H. heptaphyllus, and Tabebuia rosea; and three species with yellow flowers: H. chrysanthus, H. chrysotrichus, and T. aurea. Among these species, H. impetiginosus and H. heptaphyllus, H. chrysanthus and H. chrysotrichus are extremely similar in flower color. However, there are differences in terms of leaf serration, petiole characteristics, calyx shape, and pubescence, which can be used as distinguishing traits between the species.

Key words: Tabebuia and Handroanthus, species, phenotypic traits, identification, ornamental value

摘要： 风铃木类植物(紫葳科)是世界著名的木本花卉，广泛栽培于深圳市。然而有些种表型相似，难以区分，中文名名和拉丁名的使用也较为混乱。本文对栽培于深圳市绿地的风铃木种类及其表型和物候特征进行调查和详细描述，并通过查阅相关资料及文献进行了对比分析，为风铃木种类表型性状鉴别和种质评价提供科学依据。结果表明，深圳市绿地栽培的风铃木类植物主要来自风铃木属Handroanthus和栎铃木属Tabebuia 两属的6个物种，红花系列有3种，分别为紫花风铃木Handroanthus impetiginosus、洋红风铃木H. heptaphyllus和蔷薇风铃木Tabebuia rosea；黄花系列有3种，分别为黄花风铃木H. chrysanthus、金毛风铃木H. chrysotrichus和银鳞风铃木T. aurea。其中，紫花风铃木和洋红风铃木，黄花风铃木和金毛风铃木的花色极为相近，但叶片锯齿、叶柄、花萼形状及表面被毛等性状均存在差异，可作为二者的性状鉴别特征。

关键词: 风铃木, 树种, 表型性状, 鉴别, 观赏价值