woher?: Goteborgs Kungl. Vetensk. xxx: 26 (1951).
aus IF: K. Vet. O. Vitterh. Samh. Handl., f. 6. ser. B. 6(no. 17): 26 (1956)
Synonyms: Index Fungorum
Protolog: Thallus castaneus, opacus, areolatus, areolis discretis, subplanis, minutis, subuniformibus, KOH-, Ca Cl-, subtus et lateraliter pallidis, arcte affixis. Apothecia in quavis areola solitaria vel dua, disco atro impresso, scabrido. Cortex thallinus tenuis vel subcrassus, translucidus. Medulla crystallis oxalatis impleta. Thecium altum, superne rufofuscum. Sporae oblongae, valde numerosae.
Type locality: Argentina. Province Jujuy, Casabindo, on stone (HCL-), with Caloplaca altoandina (Malme) Zahlbr., 3600 m, 1.1948, A. L. Cabrera (L-10)(hb. MAGN.).
Barcode: Data lacking.
Type locality coordinates: 22°58'0"S, 66°4'0"W; -22.966667°, -66.066667°.
Thallus: areolate or squamulose, contiguous (in holotype) or dispersed among Acarospora xanthophana (in Reeb specimens), often distinctly lobate at margins of contiguous thalli or around some dispersed squamules. Areoles or squamules 0.5-3.0 mm wide, angular to rounded, broadly attached at first, but become distinctly stipitate and squamulose, the lower surface white or darkened by adhering substrate. Upper surface pale to dark brown, matt; well-developed squamules rugulose. Areoles multiplying by division, the stipe splitting and dividing so individual areoles or squamules may contain many individualizing units divided by fissures. Algal layer discontinuous and jagged, up to 200 µm deep, divided by hyphal bands which form prosoplectenchymatous to sub-paraplectenchymatous upper cortex which lacks an epinecral layer or syncortex sensu Knudsen (2007). The hyphal bands are responsible for the rugulose upper surface and fissures of future vegetative divisions. Apothecia one or two per areole, squamule or unit (thus many for dividing squamules); disc immersed, pale reddish brown, epruinose, rough and concave, 0.2-1.0 mm wide. Hymenium hyaline, 130-160 µm high. Epihymenium red-brown. Parathecium, 10-50 µm thick, often forming a crown concolorous with the surrounding thallus (in Bolivian specimens but not apparent in holotype), 70-100 µm wide at surface of thallus, narrowing into the hypothecium; hypothecium 15-20 µm thick. Paraphyses ca. 2 µm diam. at mid-level, apices barely expanded in pigment caps, septa not always distinct. Asci 110-125 x 25 µm, narrowly clavate; ascospores about 100 per ascus, broadly ellipsoid, 3-7 x 2-3.5 µm. Pycnidia unknown.
Photobiont:
Chemistry: No lichen substances. Spot tests negative. Secondary metabolite absent (Knudsen et al. 2008: 3).
Ecology: On exposed acidic and volcanic rocks above 3500 meters.
Molecular data: Genbank
Distribution: Argentina, Bolivia. Database
Note:
Argentina. Prov. Jujuy, Casabindo, at 3600 m, on stone (HCL-), Jan. 1948, A. L. Cabrera (L-10) with Caloplaca altoandina (MALME) ZAHLBR. (hb. MAGN.).