PDF(Pubmed)
Abstract：
Iris thoroldii is a perennial herbaceous plant with yellow, blue, or purple flowers. The species is native to the Tibetan Plateau and adjacent areas. In the literature and databases, I. thoroldii has long been treated in synonymy with I. potaninii. Currently, yellow-flowered plants of I. thoroldii are considered I. potanii, and blue-flowered plants are considered I. zhaoana, a replacement name for I. potaninii var. ionantha. This study aimed to clarify the taxonomic identity of I. thoroldii. A critical examination of original material, herbarium specimens, images of living plants, and the literature has shown I. thoroldii to be different from I. potaninii in some previously neglected macromorphological traits and to be conspecific with I. zhaoana. Thus, I. thoroldii is removed here from the synonymy of I. potaninii and accepted as a distinct species. This is endemic to China (central Gansu, Qinghai, and northwestern Sichuan provinces, and also Xinjiang Uygur and Tibet autonomous regions) and reaches the highest elevations compared with all other species in the genus Iris s.l. A revised taxonomy of I. thoroldii is provided, and two color forms, often co-occurring, are accepted: the autonymic yellow-flowered form (including a new synonym I. tigridia var. flavescens for which a lectotype was designated) and a form with blue or purple colors is proposed here, I. thoroldii f. ionantha. In addition, images of type specimens and detailed photographs of living plants for easy identification, along with the list of specimens of I. thoroldii that were examined, and also, comments on its distribution and habitats are provided.
摘要：
Iristhoroldii是一种多年生草本植物，黄色，蓝色,或紫色的花。该物种原产于青藏高原及邻近地区。在文献和数据库中，I.thoroldii长期以来一直与I.potaninii同义。目前,I.thoroldii的黄花植物被认为是I.potanii，蓝花植物被认为是I.Zhaoana，I.potaniniivar的替代名称。紫罗兰莎.本研究旨在阐明I.throoldii的分类学身份。对原始材料的严格审查，植物标本室标本,活植物的图像，文献表明，i.thoroldii在一些以前被忽略的宏观形态特征上与i.potaninii不同，并且与i.zhaoana具有特异性。因此，I.thoroldii在此从I.potaninii的同义词中删除，并被接受为一个独特的物种。这是中国特有的(甘肃中部，青海,和四川西北部的省份，以及新疆维吾尔自治区和西藏自治区），与Iriss.l属的所有其他物种相比，海拔最高。提供了I.thoroldii的修订分类法，和两种颜色形式，经常同时发生，被接受：同名黄花形式（包括新的同义词I.tigridiavar。这里提出了指定选型的苦参）和蓝色或紫色的形式，I.thoroldiif.ionantha。此外,类型标本的图像和活植物的详细照片，以便于识别，以及被检查的I.thoroldii标本清单，而且,提供了对其分布和栖息地的评论。
