The hyphomycete Chaetendophragmia triangularia was isolated from Vacci
nium macrocarpon leaf litter in Wisconsin. A Selenosporella state that
developed in culture is the first reported synanamorph in the genus.
Chaetendophragmia triangularia and synanamorph are described and illus
trated from culture and the host and geographical ranges of the specie
s are discussed.