Nordic J. Bot. 31, 1: 42 (2013).

Basionym: Xanthoria doidgeae Eichenb., Aptroot & Honegger, Lichenologist 39, 5: 456 (2007).

Protolog: xx, "South Africa, Western Cape, Van Rhynsdorp, Quaggaskop, Knersvlakte, epiphytic, 5. September 2006, D. J. Supthut 481 I (Z+ZT--holotypus)".

Type locality: South Africa, Western Cape, Van Rhynsdorp, Quaggaskop, Knersvlakte, epiphytic, 5.9.2006, D. J. Supthut 481 I (Z+ZT--holotype).

Thallus: small, 1-3 cm across, tightly adpressed, various shades of orange; lobes irregularly branched, up to 4 mm long and c. 2 mm wide, generally flat but with some depressions and ridges, for example always along the margin, dull, pruinose; in section 50-100 µm thick, margin thicker, up to 150 µm; upper cortex 5-10 µm thick, true paraplectenchymatous, covered with yellow crystals; algal layer 20-40 µm thick; photobiont Trebouxia sp.; mycobiont-photobiont interface: intraparietal haustoria; medulla rather lax, composed of a network of smooth hyphae 4-5 µm thick, some of them forming conglutinate strands, without crystals or oil droplets; lower cortex smooth, whitish, 10-15 µm thick, true paraplectenchymatous; hapters rather rare and mainly laminal. Apothecia located in central part of the thallus, usually covering the lobes, c. 0.5-1.5 mm diam., regularly rounded to irregularly compressed; disc various shades of orange, remaining flat when mature; thalline exciple curved inwards when young, crenate or pruinose where bordering the disc, in section paraplectenchymatous, filled with algae; true exciple up to 35 µm thick in the uppermost part, 10-20 µm in the basal part, scleroplectenchymatous; hymenium 50-60 µm high; subhymenium up to 20 µm thick; asci 40-50 x 10-12 µm; paraphyses c. 2 µm diam., the uppermost cells up to 7 µm diam., without oil droplets, covered with yellow-orange crystals. Ascospores 12-14 x 5-6 µm, fusiform-ellipsoid with rounded ends, septum 4-5 µm thick. Pycnidia sparse, reddish orange, 100-150 µm diam.; spermatia ellipsoid; 2.2-2.7 x 1.2-1.5 µm. (Eichenberger, Aptroot & Honegger 2007: 456).

Photobiont: Data lacking.

Chemistry: Chemosyndrome A sensu Søchting (1997). (Eichenberger, Aptroot & Honegger 2007: 456).

Ecology: Data lacking.

Molecular data: Genbank

Distribution: Database

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