Cladosporium thermophilus X. Wei Wang

Cladosporium thermophilus (Cooney & R. Emers.) X. Wei Wang, Houbraken & D. O. Natvig, Stud. Mycol. 93: 107. 2018. Mycothermus thermophilus (Cooney & R. Emers.) D. O. Natvig et al., Mycologia 107: 321. 2015, nom. inval. Humicola insolens Cooney & R. Emers., Thermophilic Fungi: 72. 1964. Humicola grisea var. thermoides Cooney & R. Emers., Thermophilic Fungi: 72. 1964. Scytalidium indonesiacum Hedger, Samson & Basuki, Trans. Brit. Mycol. Soc. 78 (2): 365. 1982. Basionym. Torula thermophila Cooney & R. Emers., Thermophilic Fungi: 92. 1964. Synonyms. Scytalidium thermophilum (Cooney & R. Emers.) Austwick, New Zealand J. Agric. Res. 19: 29. 1976. Description and illustration. Wang et al. (2019). Notes. Wang et al. (2019) validated Mycothermus thermophilus. In this study, the ex-type strain (CBS 259.81) of S. indonesiacum nested in the genus Mycothermus (Fig. 1). Although the clade containing S. indonesiacum (CBS 259.81) and M. thermophilus (CBS 625.91) received low statistical support (80 / -), they exhibit minimal morphological and sequence divergence. The ITS and LSU sequence similarities between S. indonesiacum (CBS 259.81) and M. thermophilus (CBS 625.91) were 99 % and 99.5 %, respectively. Therefore, we synonymize S. indonesiacum under M. thermophilus.