Lecanoromycetes is the largest class of lichenized fungi. It belongs to the subphylum Pezizomycotina in the phylum Ascomycota. The asci (spore-bearing cells) of the Lecanoromycetes most often release spores by rostrate dehiscence.
The group is monophyletic (composed only of all the descendants of a common ancestor).
Genera of uncertain placement
There are several genera in the Lecanoromycetes that have not been placed into any order or family. These are:
- Argopsis Th.Fr. (1857) – 1 sp.
- Ascographa Velen. (1934) – 1 sp.
- Bartlettiella D.J.Galloway & P.M.Jørg. (1990) – 1 sp.
- Bouvetiella Øvstedal (1986) – 1 sp.
- Buelliastrum Zahlbr. (1930) – 2 spp.
- Haploloma Trevis. (1857) – 1 sp.
- Hosseusia Gyeln. (1940) – 3 spp.
- Korfiomyces Iturr. & D.Hawksw. (2004) – 1 sp.
- Maronella M.Steiner (1959) – 1 sp.
- Notolecidea Hertel (1984) – 1 sp.
- Petractis Fr. (1845) – 3 spp.
- Piccolia A.Massal. (1956) – 10 spp.
- Ravenelula Speg. (1881) – 2 spp.
- Robincola Velen. (1947) – 1 sp.
- Roburnia Velen. (1947) – 1 sp.
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