Preliminary version 1 January 2015

Caloplaca obscurella (J. Lahm ex Körb.) Th. Fr.

Sommerfeltia 14 (1992).

Basionym: Data lacking.

Synonym: Index Fungorum

Protolog: Data lacking.
Type locality: Data lacking.
Barcode: Data lacking.
Coordinates: Data lacking.

 

Thallus: crustose, episubstratal, indeterminate, forming extensive patches up to one dm or more in diam., areolate, sorediate. Prothallus usually not evident, but sometimes forming a conspicuous bluish stain on smooth bark. Areolae greyish white to pale greyish green, adnate, scattered to contiguous, sometimes a few becoming confluent, flat to convex, irregular in outline, more or less placodioid in well-developed specimens, up to 0.3(-1.0) mm in diam. Soralia mostly green or grey-green, rarely bluish black, discrete, sometimes a few becoming confluent, laminal, usually distinctly crateriform, delimited by a reflexed, lacerate ring-shaped sheet formed by the thallus, or rarely, the uppermost cell-layers of the substratum, 0.08-0.3 mm in diam. Soredia greyish green to green, or rarely blue, fine, (12-)20-25(-30) µm in diam., with a wall-developed cortex (wall) of more or less globose cells; cortex colourless or, in wxposed parts of the external soredia, rarely with a brownish to grey-black or black, K- or rarely K+ violet, N+ violet pigment. Medulla absent. Photobiont green, coccoid, up to 20 µm in diam. Apothecia observed in 24 (41%) of the specimens, reddish brown to blackish brown, up to 0.5 mm in diam.; proper margin indistinct to distinct, 0.04 mm wide; thalline margin usually indistinct or absent, but sometimes distinct, rarely sorediate. Pycnidia unknown (Th. Fr. 1992: 118).

Photobiont: Data lacking.

Chemistry: no substances. (Th. Fr. 1992: 118).

Ecology: Data lacking.

Molecular data: Genbank

Distribution: Database

Note: There are different author citations:
Caloplaca obscurella (Lahm) Th. Fr. by Alstrup & Söchting (1988:9), Söchting & Alstrup (2002: ) für Denmark
Caloplaca obscurella (Lahm) Th. Fr. - Faltynowicz (1993: 9) for Poland
Caloplaca obscurella (J. Lahm) Th. Fr. - van den Boom & Gómez-Bolea (1991) for Spain: Castile & Leon
Caloplaca obscurella (J. Lahm) Th. Fr. - Llimona & Hladun (2001: 76) for Spain
Caloplaca obscurella Nyl. - Aptroot & Sparrius (2003: )