The Nectriaceae includes numerous canker pathogens. Due to the scarcity of ascomata on many hosts, comprehensive surveys are lacking. Here we characterize the diversity of perithecia-producing nectriaceous fungi across the central Appalachians in eastern North America. Nine species from eleven hosts were recovered including a novel Corinectria sp. from Picea rubens. Neonectria ditissima and Neonectria faginata were most abundant and associated with Fagus grandifolia with beech bark disease (BBD). Neonectria ditissima was also recovered from additional cankered hardwoods, including previously unreported Acer spicatum, Ilex mucronata, and Sorbus americana. Cross-pathogenicity inoculations of N. ditissima confirmed susceptibility of Acer and Betula spp. Neonectria magnoliae was recovered from cankered Liriodendron tulipifera and Magnolia fraseri and pathogenicity on L. tulipifera was confirmed. Fusarium babinda was consistently recovered from beech with BBD, although its role remains unclear. This survey provides a contemporary snapshot of Nectriaceae diversity across the Appalachian Mountains. The following nomenclatural changes are proposed: Neonectria magnoliae comb. nov.

油桃科包括许多溃疡病病原体。由于许多宿主缺乏灰霉病，因此缺乏全面的调查。在这里，我们描述了北美东部中部阿巴拉契亚山脉周围地区产皮膜坏死真菌的多样性。从11个宿主中回收了9种，包括一种新的Corinectria sp。来自云杉。念珠菌新病和新鞭毛虫最丰富，并与山毛榉树皮病（BBD）的大叶青豆有关。还从其他弯曲的硬木中回收了新奇蝇，包括以前未报告的枫树枫木，冬青树和美洲花or。ditissima的交叉致病性接种证实了Acer和Betula spp的易感性。Neonectria木兰从虫吃掉了回收北美鹅掌楸和玉兰红叶石楠和致病性上L.楸证实。尽管镰刀镰刀菌的作用尚不清楚，但始终可以从其带有BBD的山毛榉中回收。这项调查提供了整个阿巴拉契亚山脉油桃科多样性的当代快照。提出以下命名上的变化：木兰新梳。十一月