Syn.: S. microcephala Nyl.

On Fagus (probably lichenicolous on Pertusaria).

Belgium: Fl.: RRR (†<1867).

Luxembourg: - .

France: - .

The identification of the only collection requires further studies; it may represent the undescribed taxon mentioned by Purvis et al. (1992: 570, sub S. turbinata). Now extinct throughout the area of study.

Lit.: L1: 8.