TY  - EJOU
AU  - Zhang, Pengchong 
AU  - Hu, Yingfeng 
AU  - Zhang, Siyu 
AU  - Mo, Yaying 
AU  - Zheng, Yuhong 

TI  - Taxonomic Clarification and Revision of <i>Lycoris haywardii</i> Traub
T2  - Phyton-International Journal of Experimental Botany

PY  - 2026
VL  - 95
IS  - 4
SN  - 1851-5657

AB  - Based on an integrative analysis of morphological traits, phenological characteristics, karyotype, and chloroplast genome data, we revised the taxonomic status of <i>Lycoris haywardii</i> Traub, reclassifying it as a cultivar of <i>Lycoris rosea</i> Traub ex Moldenke, designated as <i>Lycoris rosea</i> ‘Lin’. <i>Lycoris haywardii</i> Traub was originally published by Traub in 1957 as a spring-leafing taxon with orchid purple flowers and stamens slightly shorter than the perianth, with a flowering period from July to mid-August and a purported distribution in Japan. However, populations cultivated in Hangzhou Botanical Garden, previously referred to as <i>L. haywardii</i>, exhibited autumnal leaf emergence, deep purple-pink flowers, and stamens longer than the perianth. Previous artificial hybridization experiments and our current chloroplast genome analyses, along with detailed morphological and phenological observations, confirmed that it is not conspecific with the original <i>L. haywardii</i>. In addition, they are natural hybrids derived from <i>L. radiata</i> var. <i>pumila</i> Grey and <i>L. insularis</i> S. Y. Zhang &amp; J. W. Shao, the same as the origin of <i>L. rosea</i>. Therefore, we formally revised the taxonomy and provided a detailed morphological description of this cultivar.
KW  - <i>Lycoris haywardii</i> Traub; <i>L. insularis</i> S. Y. Zhang & J. W. Shao; <i>L. rosea</i> Traub ex Moldenke; taxonomic revision; chloroplast genome

DO  - 10.32604/phyton.2026.075166