An expanded phylogenetic reconstruction based on the nuclear ribosomal DNA internal transcribed spacer region (nrDNA ITS) in conjunction with a multivariate statistical analysis of morphological characters revealed a new species and the re-acknowledgement of another one in Sclerorhachis (Compositae, Anthemideae). The newly revealed species, Sclerorhachis ferdowsii, has been previously included in the so-called S. platyrachis-complex, but is easily distinguished as an independent species by its rhizomatous root system, sparsely paleate receptacles, coronate and costate achenes, the relatively smaller size of the capitula, and the smaller habit of the whole plant. Additionally, morphological and molecular data corroborated S. paropamisica as a distinct species rather than being conspecific with S. platyrachis. With these newly acknowledged taxa, the number of species in Sclerorhachis is now expanded to eight. A detailed morphological description, an illustration, and distribution maps for S. ferdowsii, along with an identification key for all species of Sclerorhachis, are provided.

基于核糖体 DNA 内部转录间隔区 (nrDNA ITS) 的扩展系统发育重建与形态特征的多变量统计分析相结合，揭示了Sclerorhachis（菊科、菊科）中的一个新物种和另一个物种的重新认识。新发现的物种Sclerorhachis ferdowsii之前已包含在所谓的S中。platyrachis-复杂，但很容易区分为一个独立的物种，因为它有根状茎的根系、稀疏的粉状花托、冠状和肋状瘦果、相对较小的头状花序以及全株较小的习性。此外，形态学和分子数据证实年代。paropamisica作为一个独特的物种而不是与S同种。桔梗。有了这些新确认的分类单元，硬刺鱼属的物种数量现在已扩展到八个。提供了S. ferdowsii的详细形态描述、插图和分布图，以及所有Sclerorhachis物种的识别码。