Notulae to the Italian flora of algae, bryophytes, fungi and lichens: 20

In this contribution, new data concerning algae, bryophytes, fungi and lichens of the Italian flora are presented. It includes new records, confirmations or exclusions for the algal genera Chara , Hildenbrandia , Pleurotaenium , and Spirogyra , the bryophyte genera Braunia , Buxbaumia , Crossidium , Dicranum , Flexitrichum , Tortella and Ulota , the fungal genera Agaricus , Coltricia , Cortinarius , Gliophorus , Leucocoprinus , Leucotelium , Microbotryum , Phaeocalicium , Phragmidium , and Polycoccum , and the lichen genera Anisomeridium , Arthonia , Chaenotheca , Cladonia , Graphis , Leptochidium , Melanelia , Rinodina , Scoliciosporum , Synalissa , Toninia and Trapelia .