Emodomelanelia masonii (Essl. & Poelt) Divakar & A. Crespo
in Crespo et al., Taxon 59, 6: 1749 (2010).
Basionym: Parmelia masonii Essl. & Poelt, Bryologist 94, 2: 203 (1991).
Synonyms: Index Fungorum
Protolog: "Nepal. Langtang area: Chisedang Lekh, N-exposed very humid slopes S above Palpa (Papal) towards Palphu, 3,500-4,000 m alt., Poelt N86-L603 (GZU, holotype)".
Type locality: Nepal, Langtang area, Chisedang Lekh, N-exposed very humid slopes S above Palpa (Papal) towards Palphu, 3.500-4.000 m, Date?, J. Poelt N86-L603 (GZU - holotype).
Barcode: Available. Data lacking.
Coordinates: Data lacking.
Thallus: foliose, appressed to somewhat pulvinate, occasionally panniform in part, loosely to moderately adnate, to 7 or 8 cm diameter, rather brittle; lobes 1-3 mm broad, flat to weakly concave, 40-60 µm thick, sublinear, often becoming imbricate, sometimes in part developing secondary lobules along margins and becoming weakly panniform; upper surface tawny- to dark-brown, often shiny at least in younger, peripheral parts but usually becoming dull in older parts, lobe ends rarely very lightly pruinose, without soredia or isidia, pseudocyphellae present at least on lobe margins, and also with few to many effigurate to fleck-like laminal pseudocyphellae, pseudocyphellae whitish at first but soon darkening; lower surface black, sparsely to moderately rhizinate, rhizines simple or rarely furcate, concolorous with lower surface, to ca. 1 mm long. Apothecia infrequent, mature apothecia present in only two specimens, a third specimen with a single immature apothecium, sessile to short stipitate, concave at first but becoming somewhat irregularly flattened, to 12 mm diameter; margin entire but bearing a continuous ring of pseudocyphella tissue which may have effigurate extensions a short distance down amphithecium, sometimes much of amphithecium covered with coninuous pseudocyphella tissue; hymenium 60-78 µm thick, subhymenium 40-60 µm thick, spores ellipsoid, 13-16 / 6-9 µm, spore wall ca. 1-2 µm thick. Pycnidia infrequent; conidia 4.5 - 5.5 / 1 µm, weakly and unequally bifusiform to almost cylindrical (Esslinger & Poelt 1991: 203).
Photobiont: Trebouxiod green alga.
Chemistry: Cortex K- or darkening somewhat, HNO3+ pale to dark blue-green; medulla all spot tests negative, or K-, P+ red-orange. (Esslinger & Poelt 1991: 203, 60 specimens).
Race I: Medulla containing fumarprotocetraric acid.
Race II: Medulla containing four unidentified fatty acids.
Race III: Medulla containing both fumarprotocetraric acid and the four unidentified fatty acids.
A trace of protocetraric acid can sometimes be detected accompanying the fumarprotocetraric acid in strain I and strain III. Any of the three strains occasionally may also have a small amount of skyrin present, sometimes accompanied by a second, unidentified anthraquinone. Occasionally, a faint trace of atranorin was observed on the TLC plates, although the amounts were so small that doubt exists as to the real source.
Ecology: Data lacking.
Molecular data: Genbank
Distribution: Database
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