Fomitiporia is a genus of wood-inhabiting Hymenochaetaceae (Agaricomycetes) that includes pathogens and decomposers occurring on a wide array of plant substrates. Some species decay culms of woody bamboos, a poorly known biotic interaction. Four bambusicolous species of Fomitiporia are currently known. However, no studies concerning their phylogenetic relationships have been performed. In order to assess species boundaries and their relationships to each other, we conducted molecular phylogenetic analyses of nuc rDNA internal transcribed spacer region ITS1-5.8S-ITS2 (ITS) and portions of nuc 28S rDNA (28S), RNA polymerase II second largest subunit (RPB2), and translation elongation factor 1-α (TEF1), as well as morphological analyses. Four species that occur on culms of woody bamboos, F. bambusarum, F. spinescens, F. uncinata, and the new species F. bambusipileata, grouped together in an exclusive clade within a primarily Neotropical lineage. The new species differs from all other species in the group by the pileate basidiomata. Hypotheses regarding host-exclusivity are discussed.

Fomitiporia是居住在木材中的鬣狗科（Agaricomycetes）的一个属，其中包括多种植物底物上的病原体和分解物。一些物种腐烂木质竹子的茎，这是鲜为人知的生物相互作用。目前已知有四种杆状Fomitiporia。但是，尚未进行有关它们的系统发育关系的研究。为了评估物种边界及其相互之间的关系，我们对nuc rDNA内部转录间隔区ITS1-5.8S-ITS2（ITS）和部分nuc 28S rDNA（28S）（RNA聚合酶II第二大亚基）进行了分子系统发育分析（RPB2）和翻译延伸因子1-α（TEF1）以及形态分析。出现在木竹杆上的四种物种：F. bambusarum，F. spinescens，F. uncinata和新种F. bambusipileata，在主要为新热带世系的专属进化枝中聚集在一起。新物种与该组中的所有其他物种的不同之处在于堆积物basidiomata。讨论关于主机排他性的假设。