Chao Yi-Shan, Ebihara Atsushi, Chiou Wen-Liang, Huang Yao-Moan
Department of Biomedical Science & Environmental Biology, Kaohsiung Medical University, 100, Shih-Chuan 1st Rd., Kaohsiung, 80708, Taiwan.
Department of Botany, National Museum of Nature and Science, 4-1-1, Amakubo, Tsukuba-shi, Ibaraki 305-0005, Japan.
PhytoKeys. 2017 Aug 31(85):95-108. doi: 10.3897/phytokeys.85.14884. eCollection 2017.
is widely distributed in Eastern Asia and has high morphological variation. Some morphologically similar plants related to this species are difficult to distinguish. We showed that the new species from Taiwan, previously identified as , can be morphologically distinguished by its wide pinnae, larger terminal pinnae than the lateral pinnae in sterile fronds, and triangular basal segments of the lateral pinnae. It was confirmed that this species is phylogenetically separated from the other East Asian species, except for a morphologically distinct species , by means of chloroplast genes, and . The new species is named as , referring to its wide pinnae. Here, we provide a key to facilitate the identification of the morphologically similar species in Asia. The morphological descriptions, images, ecology, and distribution are also presented.
广泛分布于东亚，形态变异较大。一些与该物种形态相似的植物难以区分。我们发现，台湾的新物种，之前被鉴定为 ，在形态上可通过其宽大的羽片、不育叶中顶生羽片比侧生羽片大以及侧生羽片的三角形基部裂片来区分。通过叶绿体基因 和 证实，该物种在系统发育上与其他东亚 物种分离，除了一个形态独特的物种 。这个新物种被命名为 ，因其羽片宽大。在此，我们提供一个检索表以方便鉴定亚洲形态相似的 物种。还给出了形态描述、图片、生态和分布情况。
