狭叶茶（Camellia angustifolia Hung T. Chang）于1981年发表，在1992年被认为是白毛茶（C. sinensis var. pubilimba）的同物异名。实地调查和标本研究显示，狭叶茶与白毛茶在形态上有显著差异。从形态学的证据（特别是幼枝、叶片和花的被毛差异，萼片大小以及果皮厚度）来看，狭叶茶不应被归并为白毛茶。我们特此恢复狭叶茶的独立种地位。文章提供了狭叶茶的详细描述，包括花的形态。此外，狭叶茶原始描述中关于模式标本的不正确信息已得到更正。在2024年的茶组订正中，确认该组有12个种5个变种和1个变型。2025年新发表了该组的新成员：三萼茶（C. yangii). 此次又重新恢复了狭叶茶（C. angustifolia)的独立种地位。目前茶组（Sect. Thea) 有14个种5变种1变型。
Camellia angustifolia Hung T. Chang was published in 1981 and was treated as a synonym of C. sinensis var. pubilimba in 1992. Field investigation and herbarium research have revealed remarkable morphological differences between C. angustifolia and C. sinensis var. pubilimba. Evidence from morphology—particularly the variations in indumentum on young branches, leaves, and flowers, the size of the sepals, and the thickness of the pericarp—suggests that C. angustifolia should not be reduced to C. sinensis var. pubilimba. We hereby reinstate the independent specific status of C. angustifolia. A detailed description, including the flower morphology of C. angustifolia, is provided. In addition, the incorrect information regarding the type specimen in the protologue of C. angustifolia has been rectified.
After the latest revision in 2024, https://camellia.iflora.cn/Notices/Index?id=149 , two species ( 三萼茶 Camellia yangii (2025) and 狭叶茶 Camellia angustifolia (1981) ) were added as accepted species in the Section Thea, which included 12 species and 5 varieties and 1 form as shown in the following list （2024）:
1.突肋茶C. costata, 2. 皱叶茶 C. crispula, 2a多萼茶C. crispula var. multiplex, 3.防城茶C. fangchengensis, 4.秃房茶C. gymnogyna, 5.广西茶C. kwangsiensis, 6.广南茶C. kwangnanica, 7.膜叶茶C. leptophylla, 8.超长柄茶C. longissima, 9.毛叶茶C. ptilophylla, 10.茶C. sinensis, C. sinensis f. formosensis, 10a.普洱茶C. sinensis var. assamica, 10b 德宏茶C. sinensis var. dehungensis, 10c.白毛茶C. sinensis var. pubilimba, 11.大厂茶 C. tachangensis, 11a 疏齿大厂茶C. tachangensis var. remotiserrata, 12.大理茶C. taliensis.
