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Abstract：
Fuscoporia is a cosmopolitan, poroid, wood-decaying genus, belonging to the Hymenochaetales. During a study of wood-inhabiting fungi in the USA, four unknown specimens were collected from Hawaii. Both morphological criteria and molecular genetic analyses based on the ITS+nLSU+EF1-α datasets and the nLSU dataset confirmed that these four specimens represent two new species of Fuscoporia, and they are described as F. hawaiiana and F. minutissima. Fuscoporia hawaiiana is characterized by pileate basidiocarps, the absence of cystidioles, hooked hymenial setae, broadly ellipsoid to subglobose basidiospores measuring 4-6 × 3.5-4.5 μm. Fuscoporia minutissima is distinguished by small pores (10-13 per mm) and basidiospores (3.4-4 × 2.4-3 μm). The taxonomic status of the two new species is briefly discussed. A key to the North American species of Fuscoporia is provided.
摘要：
镰刀菌是世界性的，多孔，木材腐烂属，属于海门卫。在美国对木材栖息真菌的研究中，从夏威夷收集了四个未知的标本。基于ITSnLSUEF1-α数据集和nLSU数据集的形态学标准和分子遗传分析均证实，这四个标本代表了两个新的镰刀菌物种，他们被描述为F.Hawaiiana和F.minutissima。夏威夷镰刀菌的特征是成片的担心果，没有球茎，钩状处女膜刚毛,宽椭圆形至亚球形担子孢子，尺寸为4-6×3.5-4.5μm。微小镰刀菌的特征在于小孔（每毫米10-13）和担子孢子（3.4-4×2.4-3μm）。简要讨论了这两个新物种的分类状况。提供了北美镰刀菌属物种的关键。
