Piedraia
Piedraia is a genus of fungus within the Piedraiaceae family in the Capnodiales order.
There are 2 known species ;Piedraia hortae Piedraia quintanilhae
Former species;P. hortae var. paraguayensis = Piedraia hortaeP. javanica = Piedraia hortaeP. malayi = Piedraia hortaeP. sarmentoi = Piedraia hortaeP. surinamensis = Piedraia hortaeP. venezuelensis = Piedraia hortae
Piedraia hortae is responsible for causing black piedra.