S. japonicum S. kurokawae Scleropyrenium is a genus of squamulose (scaly) lichens in the family Verrucariaceae.

[1] The genus was circumscribed in 1993 by Japanese lichenologist Hiroshi Harada, with S. japonicum as the type species.

Characteristics of the genus include a dark brown to almost black exciple (the rim of tissue around the hymenium), pycnidia of the Staurothele-type, and a pachydermatous upper cortex.

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