North shore of Graham Island, Haida Gwaii, British Columbia, Canada 05.10.2018
Source: Magain N, Sérusiaux E (2012) A further new species in the lichen genus Arctomia: A. borbonica from Reunion (Mascarene archipelago). MycoKeys 4: 9-21. - CC BY-4.0
REUNION (Mascarene archipelago). Forêt de Bébour, track starting at Gîte de Bélouve toward Piton des Neiges, 21°4'49"S, 55°31'24"E (DMS), 1850 m alt., 9 Nov 2009, wet montane ericoid tickets, N. Magain & E. Sérusiaux sn (holotype : LG). Arctomia borbonica (holotype). A–B macroscopic view of the thallus, with details of the wrinkled surface B and soredioid margin, made of disintegrating goniocysts C–D cross section through the thallus, showing the cortex with small, isodiametric cells, and the Nostoc chains E surface view of the cortex F young goniocysts formed at the lobes margins. Scale: A–B = 1 mm; C–E = 20 µm.
