西北植物学报2024，Vol.44Issue(4)：673-680,8.DOI:10.7606/j.issn.1000-4025.20230632
江西景天属一新种——溪水景天
A new species of Sedum from Jiangxi:Sedum fluviale
摘要
Abstract
[Objective]During a survey of forest germplasm resources in the Yangjifeng National Nature Reserve in northeastern Jiangxi,China,in 2021,the authors discovered a plant belonging to the Crassu-laceae family and Sedum L.genus.This species differed from previously reported plants of the same ge-nus,and this paper discusses and determines its taxonomic status.[Methods]Multiple populations in Yangjifeng were tracked,and detailed observations and morphological comparisons were conducted at dif-ferent phenological stages to distinguish commonalities and unique traits.Additionally,its national distri-bution was determined through literature review and specimen examination.[Results]The species had a lotus-shaped nutritive branch in the seedling stage,which was most similar to Sedum subtile Miq.Distin-guishing features included well-developed and trinodal sterile branches,5 to 16 flowers per branch on the flower stem,and spatulate-lanceolate bracts in the former,while the latter had slender sterile branches with alternate or opposite leaves,3 to 5 flowers per branch on the flower stem,and linear bracts.[Conclusion]The study indicated that this was a new species,and was named Sedum fluviale B.Chen &Z.W.Zhu.It was specifically found in stream environments and had a broad distribution,including prov-inces such as Jiangxi,Zhejiang,Fujian,Anhui,Hunan,and Guizhou.There had been numerous instances of misidentifications in the past.The holotype specimen was stored at the Shanghai Chenshan Herbarium(CSH).关键词
江西/景天属/新种/细小景天/天目山景天/错误鉴定Key words
Jiangxi/Sedum L./new species/Sedum subtile/Sedum tianmushanense/misidentification分类
农业科技引用本文复制引用
朱宗威,陈彬,陈世品..江西景天属一新种——溪水景天[J].西北植物学报,2024,44(4):673-680,8.基金项目
上海市绿化和市容管理局科研专项(G232410) （G232410）
