Westphalen M C, Rajchenberg M, Tomšovský M, Gugliotta A M
Núcleo de Pesquisa em Micologia, Instituto de Botânica, Av. Miguel Estefano 3687, 04301-902, São Paulo, SP, Brazil.
Área de Protección Forestal, Centro de Investigación y Extensión Forestal Andino Patagónico, C.C. 14, 9200 Esquel, Chubut, Argentina.
Persoonia. 2018 Dec;41:130-141. doi: 10.3767/persoonia.2018.41.07. Epub 2018 Apr 26.
is a genus of polypores traditionally characterised by a dimitic hyphal system with clamped generative hyphae and presence of encrusted skeletocystidia. However, recent molecular studies revealed that is polyphyletic and most of the species cluster with , a morphologically similar genus separated only by a hydnoid hymenophore. In the Neotropics, very little is known about the evolutionary relationships of s.lat. taxa and very few species have been included in molecular studies. In order to test the proper phylogenetic placement of Neotropical species of this group, morphological and molecular analyses were carried out. Specimens were collected in Brazil and used for DNA sequence analyses of the internal transcribed spacer and the large subunit of the nuclear ribosomal RNA gene, the translation elongation factor 1-α gene, and the second largest subunit of RNA polymerase II gene. Herbarium collections, including type specimens, were studied for morphological comparison and to confirm the identity of collections. The molecular data obtained revealed that the studied species are placed in three different genera. Specimens of represent two distinct species that group in a lineage within the phlebioid clade, separated from and , which belong to the residual polyporoid clade. Therefore, the new genus is proposed including two species, comb. nov. and sp. nov. Neotropical specimens identified as represent a different lineage from the European species and are described as sp. nov. In addition, the new combinations , and , as well as the new name , are proposed.
是一个多孔菌属，传统上的特征是具有双核菌丝系统，其中有具锁状联合的生殖菌丝，并且存在被覆的骨架囊状体。然而，最近的分子研究表明，它是多系的，并且大多数物种与形态上相似的属聚集在一起，仅通过齿状子实层体来区分。在新热带地区，对于广义的该类群分类单元的进化关系知之甚少，并且很少有物种被纳入分子研究。为了测试该类群新热带物种的正确系统发育位置，进行了形态学和分子分析。在巴西采集了标本，并用于对内部转录间隔区、核糖体RNA基因的大亚基、翻译延伸因子1-α基因以及RNA聚合酶II基因的第二大亚基进行DNA序列分析。研究了包括模式标本在内的标本馆收藏，以进行形态学比较并确认所收藏标本的身份。获得的分子数据表明，所研究的物种分属于三个不同的属。的标本代表两个不同的物种，它们在脉状类群内的一个谱系中聚类，与属于残余多孔菌类群的和分开。因此，提出了新属，包括两个物种，新组合和新物种。被鉴定为的新热带标本代表了一个与欧洲物种不同的谱系，并被描述为新物种。此外，还提出了新组合、和，以及新名称。
