Pier Luigi Nimis
Apparatus of images: Andrea Moro - Software and databases: Stefano Martellos

This is a key to the four species of two apparently similar, but distantly related genera with lecideine apothecia and muriform ascospores which occur in Italy (Nimis 2016):
Lopadium Körb. - A subcosmopolitan genus of c. 10 species characterised by asci which lack a distinct apical dome and by thick, more or less simple paraphyses with a dark brown conical cap (Hafellner 1984). The taxonomic position of the Lopadiaceae within the Lecanoromycetidae is still unclear (see Miadlikowska & al. 2014).
Schadonia Körb. - This genus includes 3 species in temperate-arctic areas of the Northern Hemisphere. It resembles Lopadium, differing in the 2-8-spored asci with an amyloid tholus, and in the slender, branched-anastomosing paraphyses without swollen, pigmented apical cells. The genus is usually included into the Ramalinaceae, but at least S. fecunda has been assigned to the Pilocarpacaeae (Miadlikowska & al. 2014).


Miadlikowska J., Kauff F., Högnabba F., Oliver J.C., Molnár K, Fraker E., Gaya E., Hafellner J., Hofstetter V., Gueidan C., Otálora M.A.G., Hodkinson B., Kukwa M., Lücking R., Björk C., Sipman H.J.M., Burgaz A.R., Thell A., Passo A., Myllys L., Goward T., Fern 2014. A multigene phylogenetic synthesis for the class Lecanoromycetes (Ascomycota): 1307 fungi representing 1139 infrageneric taxa, 317 genera and 66 families. Mol. Phylogenet. Evol., 79: 132-168.
Nimis P.L. 2016. The lichens of Italy. A second annotated catalogue. EUT, Trieste, 740 pp.
Hafellner J. 1984. Studien in Richtung einer natürlicheren Gliederung der Sammelfamilien Lecanoraceae und Lecideaceae. In: Hertel H., Oberwinkler F. (eds.). Beiträge zur Lichenologie. Festschrift J. Poelt. Beihefte zur Nova Hedwigia, 79: 241–371.

Last modified: Septermber, 17, 2022

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