The new species Stenocybe fragmenta (Ascomycota, Mycocaliciaceae) is described from western North America. The species was collected from twigs of Cercocarpus montanus and Rhamnus purshiana. Stenocybe fragmenta is characterized by 5-7 septate, 18-30 I?m long ascospores that fragment at maturity. This is the first report of spore fragmentation among the Mycocaliciaceae.
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Stenocybe fragmenta, a new species of Mycocaliciaceae with fragmenting spores