ABSTRACTThe generic nameDactuliochaetais established to accommodatePyrenochaeta glycines, the causal agent of red leaf blotch of soybeans and its synanamorphDactuliophora glycines.The fungus is redescribed and illustrated from isolates originating from sclerotia onNeonotonia wightiior soybean (Glycine max) leaves or that were sieved from soil in Zambia, Africa. The genus is characterized by setose sclerotia which germinate to form mycelium and then setose pycnidia and/or pycnidia and sclerotia on their surfaces. The inner pycnidial walls are lined with ampulliform to lageniform, phialidic conidiogenous cells that often are periclinally thickened at the conidiogenous locus and bear uninucleate, hyaline conidia.