重庆被子植物新资料

New data of angiosperms from Chongqing

关键词:  新记录属  新记录种  被子植物  植物多样性；重庆市

Key words:  new record genus  new record species  Angiosperms  Plant diversity  Chongqing

摘要:

重庆地处川东–鄂西地区的核心地带，是中国植物多样性研究热点地区之一，摸清重庆被子植物资源本底， 对重庆植物资源保护与利用具有重要意义。本研究团队通过形态观察、解剖以及与现有标本和文献进行比较，对四面山植物标本进行了整理。 确定了重庆桔梗科1新记录 属——同钟花属（Homocodon D. Y. Hong），以及5新记录种：同钟花（H. brevipes (Hemsley) D. Y. Hong）、湖南杜鹃（Rhododendron hunanense Chun ex Tam）、伞花落地梅（Lysimachia sciadantha C. Y. Wu）、河边绶草（Spiranthes sunii Boufford & Wen H. Zhang）和毛叶鼠李（Rhamnus henryi C. K. Schneider），其中4种为我国特有分类群。说明完善重庆及周边区域植物种类多样性基础数据还需深入野外考察和对现有标本、历史文献进行整理。

Abstract:

Chongqing is located in the core area of E Sichuan-W Hubei, one of the plant diversity hot-spots in China. A thorough inventory of plant species will have vital importance for the protection and utilization of plant resources in Chongqing and adjacent regions. Specimens from Simian Mountains were collected through morphological examination, meticulous dissection, and comparative analysis with established specimens and literatures. Homocodon (Campanulaceae) is confirmed to be a new generic record, with the species H. bervipes newly included in flora of Chongqing. Additional four new record species in Chongqing are Rhododendron hunanense (Ericaceae), Lysimachia sciadantha (Primulaceae), Spiranthes sunii (Orchidaceae), and Rhamnus henryi (Rhamnaceae). Four newly recorded taxa in Chongqing are Chinse endemics. It is supposed that further field works together with studies on available herbarium specimens and literature records are still essential to have a better understanding of the basic plant species data in Chongqing and adjacent regions.