New and interesting Biscogniauxia taxa, with a key to the world species

Six new taxa of Biscogniauxia are described from Taiwan, including four new species: B. ambiens, B. cylindrispora, B. formosana, and B. latirima; and two new varieties: B. albosticta var. orientalis and B. formosana var. kentingensis. Their cultural and anamorphic data are also provided. A description is provided for B, doidgeae based on its type. Cultural and anamorphic data are given for B. philippinensis var. microspora. A key to the 57 known species of Biscogniauxia in the world is also given.