Roussoella Sacc., in Saccardo & Paoletti, Atti Inst. Veneto Sci. lett., ed Arti, Sér. 6 6: 410 (1888). Index Fungorum number: IF4799

Roussoella was introduced by Saccardo and Paoletti (1888), with the type species R. nitidula Sacc. & Paol., which
was collected from bamboo in Malaysia. This genus was previously placed in order Xylariales (Müller and von Arx 1962),as from the asci and the paraphyses, it was very difficult todistinguish if they were unitunicate or bitunicate. However,Hyde et al. (1996) re-examined the type material and demonstrated that Roussoella has bitunicate asci, lacking a blue staining ring. Hyde (1997) reviewed Roussoella with a modified key provided. The asexual morph of Roussoella links to Cytoplea (Liu et al. 2014).