Kansai Research Center, Forestry and Forest Products Research Institute, 68 Nagaikyutaro, Momoyama, Fushimi, Kyoto, 612-0855 Japan.
Mycologia. 2011 May-Jun;103(3):598-609. doi: 10.3852/10-182. Epub 2010 Dec 21.
We describe and illustrate two Strobilomyces species, S. seminudus and S. hongoi sp. nov. These two species have been confused and treated as a single species (i.e. S. seminudus). However recent studies based on population genetics have implied that they are reproductively isolated. In the present study we found that they are phylogenetically and morphologically distinct. The molecular phylogenetic trees inferred from the partial sequences of the largest subunit of RNA polymerase II (RPB1) and the second-largest subunit of RNA polymerase II (RPB2) support the differentiation of these two species as well as their differentiation from other related species. Strobilomyces seminudus is characterized by a stipe with an annular zone, becoming distinctly thickened near the apex and mottled with appressed-tomentose scales near the base. In contrast S. hongoi is characterized by a stipe with a remarkable reticulum at the upper and middle part and with minutely warty scales downward. Stipe characteristics also are useful for distinguishing these two species from other related species. In addition the incompletely reticulated basidiospores of these two species are also distinct from those of related species (i.e. S. foveatus).
我们描述并图示了两个珊瑚菌属（Strobilomyces）物种，即半裸珊瑚菌（S. seminudus）和 Hongoi 珊瑚菌（S. hongoi）sp. nov.。这两个物种之前被混淆并被视为一个单一的物种（即 S. seminudus）。然而，基于种群遗传学的最近研究表明它们在繁殖上是隔离的。在本研究中，我们发现它们在系统发育和形态上是不同的。从 RNA 聚合酶 II 大亚基（RPB1）和 RNA 聚合酶 II 第二大亚基（RPB2）的部分序列推断出的分子系统发育树支持这两个物种的分化，以及它们与其他相关物种的分化。半裸珊瑚菌的特征是菌柄具有一个环带，在顶端附近明显变厚，并在基部附近有贴伏绒毛状鳞片。相比之下，Hongoi 珊瑚菌的特征是菌柄在上部和中部有明显的网状结构，向下有微小的疣状鳞片。菌柄特征也有助于将这两个物种与其他相关物种区分开来。此外，这两个物种的不完全网状的担孢子也与相关物种（即 S. foveatus）的不同。
