The lichens of the Cladonia pyxidata-chlorophaea group and allied species in Poland

Abstract

Kowalewska, A., Kukwa, M., Ostrowska, I., Jablonska, A., Oset, M. & Szok, J. 2008. The lichens of the Cladonia pyxidata-chlorophaea group and allied species in Poland. - Herzogia 21: 61-78. The taxonomy, secondary chemistry, morphology, habitat requirements and distribution of Cladonia pyxidata, C. chlorophaea and the allied species in Poland are treated. The study is based on 2157 examined specimens origina- ting from Poland. Furthermore, types of several taxa as well as additional samples have been studied. Twelve taxa were accepted to occur in Poland. Cladonia monomorpha is reported for the first time for North America (Greenland and Vermont) and Asia (Mongolia). Cladonia pyxidata var. baccifera proved to be a synonym of C. monomorpha. Cladonia pyxidata var. neglecta f. dilacerata is tentatively placed in synonymy of C. cryptochlorophaea. A key for all taxa known from Poland is provided.