Gyalolechia fulgens (Sw.) Søchting, Frödén & Arup

in Arup, Søchting & Frödén, Nordic J. Bot. 31: 70 (2013).

Basionym: Lichen fulgens Sw., Nova Acta Acad. Upsal. 4: 246 (1784).

 

Type: Sweden, lectus in Insula Fårö, Gotlandiae, habitat in terra (BM - Linn. 1273: 54).
Thallus: placodioid, monophyllus, with distinct marginal lobes, up to 2.1 cm in diam.; upper surface yellow or orange, covered with whitish pruina, schizidia absent; upper cortex paraplectenchymatous, 17-50 µm thick including a up to 30 µm thick epinecral layer; medulla white, 75-175 µm thick; algal layer continuous, 50-80 µm thick; lower cortex absent; lower surface gelatinized, compressed hyhae. Apothecia common, sessile, up to 1.1 mm in diam.; disc flat; margin smooth, brighter than disc; asci clavate, 8-spored. Ascospores hyaline, simple, ellipsoid, 10-15 x 4-5 µm. Pycnidia not found. (Nash et al. 2001: xx).

Photobiont: Data lacking.

Chemistry: Anthraquinone pigments (Nash et al. 2001: xx).