文献类型：期刊文献

英文题名：Catalpa lutea (Bignoniaceae), a new species from north, central, and east China

作者：Liu, Ying[1,2,3] Li, Zhen-Yu[4] Zhang, Jiang-Tao[5] Ge, Wan-Ting[1] Zhang, Ming-Gang[6] Lu, Nan[1] Ma, Wen-Jun[1] Wang, Jun-Hui[1]

第一作者：Liu, Ying

通信作者：Ma, WJ[1];Wang, JH[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat, State Forestry Adm,Res Inst Forestry, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[3]Northeast Forestry Univ, Beijing 100091, Peoples R China;[4]Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China;[5]Henan Acad Forestry, Zhengzhou 450008, Peoples R China;[6]Guizhou Acad Forestry, Guiyang 550005, Peoples R China

年份：2026

期号：270

起止页码：25-39

外文期刊名：PHYTOKEYS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001681219100001)】；

基金：This study was supported bythe National Key R&D Program of China (2021YFD2200301) .

语种：英文

外文关键词：Bignoniaceae; Catalpa; chloroplast genome; morphology; SNPs

摘要：Catalpa lutea J.H.Wang, W.J.Ma & Z.Y.Li, a new species of Bignoniaceae from north, central, and east China, is described and illustrated. By combining recent morphological comparisons with phylogenetic analyses of nuclear single-nucleotide polymorphisms (SNPs) and the chloroplast genome, we demonstrate that C. lutea is readily distinguishable from its congeners, including Catalpa fargesii Bureau and other Chinese species of section Catalpa. A detailed morphological description, illustrations, and molecular data are provided. While conforming to sect. Catalpa in its typically ovate leaf blades, didynamous stamens, and five corolla lobes, C. lutea is unequivocally distinguished by its narrowly ovate crown, yellow heartwood, bright yellow anthers, filaments with purple dots, conspicuously thickened deep purple striations within the corolla tube, and floral spots exceeding 1 mm in diameter. Additional diagnostic characters include young foliage frequently flushed purple, mature leaves green with a purple tinge on occasion, and 3-4 nectaries at the leaf axils on the abaxial surface. The conservation status of this species is assessed as "Data Deficient" (DD) according to the IUCN Red List Categories and Criteria.