This is a key to the 4 species of Clauzadea occurring in Italy (Nimis 2016). The genus accommodates 4 species formerly treated as Lecidea or Protoblastenia, which differ in the uniform brown pigmentation of the apothecia, the non-septate and halonate ascospores, and the asci with an amyloid tube in the tholus; the type II conidiophores and the apical and lateral conidiogenesis provide additional valuable characters. A phylogenetic analysis based on molecular data suggests that the genus is most closely related to a group of genera (including Bryobilimbia, Farnoldia, Lecidoma and Romjularia) that do not belong to Lecideaceae s.str. (Fryday & al. 2014). All species occur on calcareous rocks. The genus has been monographed by Meyer (2002).

References

Meyer B. 2002. Die Flechtengattung Clauzadea. Sendtnera, 8: 85-154.
Fryday A., Printzen Ch., Ekman S. 2014. Bryobilimbia, a new generic name for Lecidea hypnorum and closely related species. Lichenologist, 46, 1: 25-37.
Nimis P.L. 2016. The lichens of Italy. A second annotated catalogue. EUT, Trieste, 740 pp.

Last modified: July, 23, 2021

Project Dryades, Department of Life Sciences, University of Trieste - CC BY-SA 4.0