Tremella mesenterica. Maine, 28th November 2008, mixed coastal forest. The identification by Bob Andersen (thanks Bob) is tentative and I would welcome confirmation or correction
Ana M. Millanes, Paul Diederich, Martin Westberg, Tommy Knutsson, Mats Wedin
Mycokeys
Figure 1.Photographs of new species or records for the Nordic countries, Norway, and Sweden. Macroscopic habit of Tremella rhizocarpicola on Rhizocarpon lavatum (holotype, BG: L-68612) (A), Tremella pertusariae on Pertusaria hymenea (S: F-131626) (B), Tremella protoparmeliae, asymptomatic on Protoparmelia badia (S: F-255342) (C), Tremella caloplacae on Caloplaca decipiens (S: F-253110) (D), Tremella caloplacae on Xanthoria parietina (S: F-253109) (E), and Tremella rinodinae on Rinodina gennarii (S: F-255341) (F). Basidium morphology in Tremella rhizocarpicola (G), Tremella pertusariae (H), Tremella protoparmeliae (I), Tremella caloplacae (S: F-255314) (J), and Tremella rinodinae (KâL). Scale bars: 1 mm (AâF) and 10 mm (GâL).