Shiraiaceae is an important family in Pleosporales (Dothideomycetes), which includes medical fungi and plant pathogens. Two hypocrellin-producing taxa, Shiraia bambusicola and a novel genus Rubroshiraia gen. nov., typified by Rubroshiraia bambusae are treated in this article. Maximum likelihood analysis, generated via RAxML (GTR+G model), using a combined SSU, LSU, TEF1 and RPB2 sequence dataset, shows that Rubroshiraia is close to Shiraia and belongs to the family Shiraiaceae. Descriptions, illustrations and a taxonomic key are provided for the genera in Shiraiaceae. Rubroshiraia morphologically differs from Shiraia in having small and dark ascostromata and filiform ascospores. Production of the ascostromatal metabolites, hypocrellin A and B, were examined by HPLC and spectrophotometer. The content of hypocrellin A and B of specimen HKAS 102255 (R. bambusae) is twice that produced by HKAS 102253 (S. bambusicola). To clarify the relationship between R. bambusae and Hypocrella bambusae, type material of the latter was examined and provided the illustration.

中文翻译：

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布鲁氏菌属 十一月，是白屈菜科（Pleosporales）的第二个果胶产生属。

Shiraiaceae是Pleosporales（Dothideomycetes）的重要家族，其中包括医用真菌和植物病原体。两个产生高甘油三酯的类群，即Shiria bambusicola和一个新属Rubroshiraia。本文将介绍以Rubroshiraia bambusae为代表的nov.。通过结合使用SSU，LSU，TEF1和RPB2序列数据集的RAxML（GTR + G模型）生成的最大似然分析表明，红褐肉座菌与白毛病属很近，属于白蜡科。为白果科的属提供了描述，插图和分类钥匙。Rubroshiraia在形态上与Shiraia有所不同，其具有小的和深色的蠕形孢子虫和丝状子孢子孢子。通过HPLC和分光光度计检查了腹膜间的代谢产物，降乳素A和B。样品HKAS 102255（R. bambusae）中的hypercrellin A和B的含量是HKAS 102253（S. bambusicola）的两倍。为了弄清R. bambusae和Hypocrella bambusae之间的关系，研究了后者的类型材料并提供了说明。