in Purvis, Smith & James, Arquipélago, Ciências Biológicas e Marinhas 12A: 45 (1994).
Protologue type data: Typus: Azores: Pico, NW slopes of Pico, c. 3 km S of road EN3, through Cerrado de Sonicas, S. of track leading to aerial, alt. 1000-1150 m [site 24], 11 April 1992, O. W. Purvis & P. James (BM - holotypus).
Type locality: Portugal, Azores, Pico, NW slopes of Pico, c. 3 km S of road EN3, through Cerrado de Sonicas, S. of track leading to aerial, alt. 1000-1150 m [site 24], 11 April 1992, O. W. Purvis & P. James (BM - holotype).
Type locality coordinates: 38°28'52"N, 28°22'2"W; 38.481111°, -28.367222°.
ITS barcode: Data lacking.
Description: Lichen. Thallus crustose, thin to moderately thick, + continuous, smooth, only irregularly fissured through cracking of underlying substrate, membranous, white to grey-white, spreading, often encircling twigs and small branches; prothallus absent or inconspicuous, white, sorediate. Soralia c. 0.3-0.8 mm diam., scattered and widely dispersed, rarely 2- to 3-confluent, rounded, excavate, appearing ulcerose with a + ragged rim, sometimes becoming erumpent, convex-efflorescent, concolorous with thallus or pale yellow-grey; soredia + coarsely granular, 0.1-0.15 mm diam. Apothecia 0.5-1(-1.5) mm diam., occasional, mostly discrete and widely dispersed, rarely 2- to 3-contiguous, sessile throughout; disc pale yellow-orange or flesh-coloured, smooth to + scabrid, + translucent, not or very sparingly white-pruinose, concave at first becoming + plane; margin persistent, thick, smooth, + tumid, even or occasionally angular trough mutual pressure. Pycnidia rare, 0.2-0.4 mm diam., low-conical with a flattened apex (Purvis et al. 1994: 45).
Photobiont: cells green, 9-10 µm diam., forming a distinct and continuous algal layer, 20-50 µm tall beneath hypotheium with scattered, subcontinuous radiating clumps in the outer margin just proximal to a rather well-developed cortical reagion; photobiont.
Distribution Database: Distributions
Distribution Database: Discover Life
Picture Database: Tropical Lichens
Molecular Database: Genbank
Synonym Database: Index Fungorum
Synonym Database: Mycobank