New Caloplaca species from Australia.
Seven new species of Caloplaca are described, the isidiate Caloplaca clavatoisidiata and C. sipmanii, and five fertile species, C. bastowii, C. beaugleholii, C. dahlii, C. jerramungupensis and C. norfolkensis. The new species are distinguished from related species by morphological, anatomical and chemical characters which are described in detail. The new combination Caloplaca soredians (Müll.Arg.)
