Abstract Atheliales (Agaricomycetes, Basidiomycota) is an order mostly composed of corticioid fungi, containing roughly 100 described species in approximately 20 genera. Members exhibit remarkable ecological diversity, including saprotrophs, ectomycorrhizal symbionts, facultative parasites of plants or lichens, and symbionts of termites. Ectomycorrhizal members are well known because they often form a major part of boreal and temperate fungal communities. However, Atheliales is generally understudied, and molecular data are scarce. Furthermore, the order is riddled with many taxonomic problems: some genera are non-monophyletic, and several species have been shown to be more closely related to other orders. We investigated the phylogenetic position of genera that are currently listed in Atheliales sensu lato by employing an Agaricomycetes-wide dataset with emphasis on Atheliales including the type species of genera therein. A phylogenetic analysis based on LSU, 5.8S, rpb2, and tef1 (excluding third codon) returnedretrieved Atheliales in subclass Agaricomycetidae, as sister to Lepidostromatales. In addition, a number of Atheliales genera were retrieved in other orders with strong support: Byssoporia in Russulales, Digitatispora in Agaricales, Hypochnella in Polyporales, Lyoathelia in Hymenochaetales, and Pteridomyces in Trechisporales. Based on this result, we assembled another dataset focusing on the clade with Atheliales sensu stricto and representatives from Lepidostromatales and Boletales as outgroups, based on LSU, ITS (ITS1–5.8S–ITS2), rpb2, and tef1. The reconstructed phylogeny of Atheliales returned five distinct lineages, which we propose here as families. Lobulicium, a monotypic genus with a distinct morphology of seven-lobed basidiospores, was placed as sister to the rest of Atheliales. A new family is proposed to accommodate this genus, Lobuliciaceae fam. nov. The remaining four lineages can be named following the family-level classification by Julich (1982) , and thus we opted to use the names Atheliaceae, Byssocorticiaceae, Pilodermataceae, and Tylosporaceae, albeit with amended circumscriptions.

中文翻译：

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Atheliales sl 的多基因系统发育和分类学修订：恢复三个科和一个新科，Lobuliciaceae fam。十一月

摘要 Atheliales (Agaricomycetes, Basidiomycota) 是一种主要由皮质类真菌组成的目，包含大约 20 个属中的大约 100 个已描述物种。成员表现出显着的生态多样性，包括腐生菌、外生菌根共生体、植物或地衣的兼性寄生虫以及白蚁的共生体。外生菌根成员是众所周知的，因为它们通常构成北方和温带真菌群落的主要部分。然而，Atheliales 普遍缺乏研究，分子数据很少。此外，该目还存在许多分类学问题：一些属是非单系的，一些物种已被证明与其他目有更密切的关系。我们通过使用 Agaricomycetes-wide 数据集调查了目前在 Atheliales sensu lato 中列出的属的系统发育位置，重点是 Atheliales，包括其中的属的类型种。基于 LSU、5.8S、rpb2 和 tef1（不包括第三个密码子）的系统发育分析返回了在 Agaricomycetidae 亚纲中检索到的 Atheliales，作为 Lepidostromatales 的姐妹。此外，许多 Atheliales 属在其他订单中得到了强有力的支持：红菇目中的 Byssopora、蘑菇目中的 Digitatispora、多孔菌目中的 Hypochnella、膜毛目中的 Lyoathelia 和 Trechisporales 中的 Pteridomyces。基于这一结果，我们根据 LSU、ITS (ITS1–5.8S–ITS2)、rpb2、以 Atheliales sensu stricto 和 Lepidostromatales 和 Boletales 的代表作为外群，组装了另一个数据集 和 tef1。重建的 Atheliales 系统发育返回了五个不同的谱系，我们在这里将它们作为科提出。Lobulicium 是一种具有独特形态的七裂担子孢子的单型属，被放置为其他 Atheliales 的姐妹。一个新的家庭被提议容纳这个属，Lobuliciaceae fam。十一月 其余四个谱系可以按照 Julich (1982) 的科级分类命名，因此我们选择使用名称 Atheliaceae、Byssocorticiaceae、Pilodermataceae 和 Tylosporaceae，尽管有修改的限制。一个新的家庭被提议容纳这个属，Lobuliciaceae fam。十一月 其余四个谱系可以按照 Julich (1982) 的科级分类命名，因此我们选择使用名称 Atheliaceae、Byssocorticiaceae、Pilodermataceae 和 Tylosporaceae，尽管有修改的限制。一个新的家庭被提议容纳这个属，Lobuliciaceae fam。十一月 其余四个谱系可以按照 Julich (1982) 的科级分类命名，因此我们选择使用名称 Atheliaceae、Byssocorticiaceae、Pilodermataceae 和 Tylosporaceae，尽管有修改的限制。