Department of Mycology, Real Jardín Botánico, Consejo Superior de Investigaciones Científicas, Madrid, 28014, Spain.
Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru.
Mycologia. 2022 Jul-Aug;114(4):798-811. doi: 10.1080/00275514.2022.2072140. Epub 2022 Jun 13.
A new species of the genus (order Physarales, Myxomycetes, Amoebozoa) is described from Peru. Relevant details on spore germination, as well as morphological and phylogenetic data, are provided. At first glance, the new species shares some morphological similarities with both , type of the genus, and , but it strikingly differs from all other species of its genus by combining a short dark stalk, with a reticulate columella, and clustered spores. Moreover, it seems to be the only species of exclusively associated with tropical forests at elevations above 3500 m. Apart from a comprehensive morphological study of 31 specimens, we here provide phylogenetic evidence to confirm the inclusion of this species in the genus . Specifically, our phylogenetic analyses of the nuclear 18S rDNA (18S), mitochondrial 17S rDNA (17S), and elongation factor-1 alpha () genes show that the new species is related to and . The remarkably different morphological characters distinguishing the new from all other species of its genus, along with its particular ecological preferences and geographic distribution, indicate that it is a distinct entity deserving recognition as an independent species.
本文描述了来自秘鲁的Physarales 目（Myxomycetes，变形虫）中的一新种。提供了有关孢子萌发以及形态学和系统发育数据的相关细节。乍一看，该新种与属内的两种形态相似， 为该属的模式种， ，但它与该属的所有其他种明显不同，因为它具有短的深色柄，具网状的柱状物和聚集的孢子。此外，它似乎是唯一一种与海拔 3500 米以上的热带森林有关的 。除了对 31 个标本进行全面的形态学研究外，我们还提供了系统发育证据，以确认该物种包含在属 中。具体来说，我们对核 18S rDNA（18S）、线粒体 17S rDNA（17S）和延伸因子-1α（）基因的系统发育分析表明，该新种与 和 有关。新的 与该属的所有其他种在形态上明显不同，加上其特殊的生态偏好和地理分布，表明它是一个独特的实体，值得作为一个独立的物种来识别。
