Candelariella efflorescens agg.

A group of sorediate epiphytic taxa, which in this atlas includes C. efflorescens s. str., C. pulchella, C. reflexa and C. rubrisoli. In the past, representatives of this aggregate were collectively reported in the Czech Republic under the name C. reflexa. These lichens form sorediate areoles that sometimes merge into continuous sorediate crusts. Their identification—especially when sterile—is very difficult. Moreover, apothecia are only rarely present. Confusion is also possible, for example, with Caloplaca flavocitrina, which can also grow epiphytically; however, its thallus is K+ purple.

Literature: van der Kolk H., Westberg M. & Malíček J. (2025): Morphological and molecular data support the distinction of four sorediate corticolous Candelariella species in Europe. – The Lichenologist 57: 144–165.

Ascomycota → Lichinomycetes → Candelariales → Candelariaceae → Candelariella