Selenaspora guernisacii has been collected in Oregon and is reported f
or the first time from North America. An unusual feature of the specie
s is the presence of a membranous veil covering the hymenium in young
specimens. At least four, more likely eight or more, nuclei are presen
t in mature ascospores; most cells in the paraphyses contain two to fo
ur nuclei. Placement in the Sarcosomataceae is suggested.