Lichenologist 44, 4: 450 (2012).
Protolog: A crustose, nearly squamulose, terricolous Trapelia with crenate and seemingly sorediate apothecia and skyrin.
Protolog type data: Typus: Portugal, Madeira, Camacha, Valle Paraiso, 36°17'N, 3°25'E, on soil between basalt of footpath, 750 m alt., 3 June 2011, A. Aptroot 69725 (BR - holotypus; ABL - isotypus).
Type locality: Portugal, Madeira, Camacha, Valle Paraiso, on soil between basalt of footpath, 750 m, 3 June 2011, A. Aptroot 69725 (BR - holotype; ABL - isotype).
Type locality coordinates: 36°17'N, 3°25'E.
Molecular barcode: Data lacking.
Thallus: consisting of tightly appressed nodulose areoles, whitish, corticate, slightly glossy, mostly heavily pruinose, grey where not pruinose. Areoles roundish to incised, convex, c. 1 mm diam., but partly incised and mostly aggregated to form thallus patches of 0.5 - 2.0 cm diam. Medulla partly bright red. Apothecia usually present, sessile, cupular, up to 1 mm diam., circular, thalline margin white, crenulate with irregular rough surface; disc concave, pink, often white pruinose. Apothecium initials show as roughened whitish areas on the thallus, somewhat resembling soredia or the scars left by fallen-off isidia in Trapeliopsis wallrothii. Hymenium pink; hypothecium brown, partly bright red. Asci Trapelia-type. Ascospores 8 per ascus, hyaline, ellipsoid, 18-23 x 9-12 µm. Pycindia not observed (Aptroot & Schumm 2012: 450).
Photobiont: green, c. 10 µm diam. (Aptroot & Schumm 2012: 450).
Chemistry: Thallus C-, K-, KC-, P-. Anthraquinone (skyrin, TLC) in red parts of the medulla and hypothecium, which react K+ purple (Aptroot & Schumm 2012: 450).
Ecology: On compacted soil, for example between rocks on footpath, at lowland to mid elevations.
Distribution Type: Endemic to Macaronesia. Madeira and the Canary Islands: Gran Canaria.
Note:
Lichens of the Pacific Northwest
-->