The Microthyriaceae and Micropeltidaceae are poorly known but interesting families.Microthyriaceae comprises54 genera and Micropeltidaceae 27 genera,being of foliar epiphytes or saprobes on dead leaves and stems.Were-visited the two families based on examinations of generic types where possible.Members are distributed inAulographaceae,Asterinaceae,Microthyriaceae,Micropeltidaceae and Palmulariaceae and notes are provided oneach of these families.