Parmeliaceae Melanelixia glabratula Growth type foliose Chemical results: Medulla: K+/- red, C+ red, KC+ red, UV- Common on the trunks and branches of deciduous trees, rare on conifers, lignum and rocks. Shiny green-brown lobes with shallow notches at apices. Centre of thallus closely adpressed. Coralloid or simple isidia, more regular in shape than those of Melanelixia subaurifera and scratching white. Under-surface black with simple rhizines, light-brown at edges. Apothecia occasional. Similar: M. fuliginosa. Dark brown lobes, usually found on rocks. Melanohalea exasperatula. Hollow isidia, medulla K-, C-, KC-

Melanelixia glabratula
On granite, Wareham, Dorset. December 2016