Pachyphlodes is a lineage of ectomycorrhizal, hypogeous, sequestrate ascomycete fungi native to temperate and subtropical forests in the Northern Hemisphere. Pachyphlodes species form ectomycorrhizae mainly with Fagales hosts. Here we describe two new species of Pachyphlodes, P. brunnea, and P. coalescens, based on morphological and phylogenetic analysis. Pachyphlodes brunnea is distributed in the states of Tamaulipas and Nuevo León in northern México, occurring with Quercus and Juglans species. It is characterized by its dark brown peridium, white gleba, and spores with capitate columns. Pachyphlodes coalescens is distributed in the states of Michoacán and Tlaxcala in central and southwestern México co-occurring with Quercus and is distinguished by its reddish-brown peridium, light yellow gleba, and spore ornamentation. Both species, along with P. marronina, constitute the Marronina clade. This clade contains North American species characterized by a brown peridium and spores ornamented with capitate spines to coalesced spine tips that form a partial perispore.

中文翻译：

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来自地下的问候：来自墨西哥的松露属（Pezizaceae，Pezizales）的两个新种

Pachyphlodes 是原生于北半球温带和亚热带森林的外生菌根、次生、螯合子囊菌的谱系。Pachyphlodes 物种主要与 Fagales 宿主形成外生菌根。在这里，我们根据形态学和系统发育分析，描述了两种新的 Pachyphlodes、P. brunnea 和 P. coalescens。Pachyphlodes brunnea 分布在墨西哥北部的塔毛利帕斯州和新莱昂州，与栎属和胡桃属物种一起出现。它的特点是其深棕色的包皮、白色的花球和带有头状柱的孢子。Pachyphlodes coalescens 分布在墨西哥中部和西南部的 Michoacán 和 Tlaxcala 州，与 Quercus 共生，以红棕色的peridium、浅黄色的 gleba 和孢子纹饰而著称。两个物种，以及 P. marronina，构成了 Marronina 分支。这个进化枝包含北美物种，其特征是棕色的包皮和孢子装饰有头状刺到形成部分周孢子的聚结刺尖。