Preliminary version 1 August 2013
Seirophora orientalis Frödén
Graphis Scripta 17: 22 (2005) "Kyrgyzstan, Tienshan, Tal des Kjokemeren, an Populus, 41°59'13"N, 74°09'33"E, 1.VIII.1999, B. Litterski 5054 (B holotype; LD, Litterski priv. herb. isotypes)".
Synonym: Index Fungorum
Type: Kyrgyzstan, Tienshan, Tal des Kjokemeren, an Populus, xxx m, 1 August 1999, B. Litterski 5054 (B - holotype; LD, Litterski priv. herb. - isotypes).
Barcode: Data lacking.
Coordinates: 41°59'13"N, 74°09'33"E.
Thallus: subfruticose to caespitose, usually rosette forming, small, 1.5 - 4 cm wide and 0.5 - 1.4 cm high; lobes dorsiventral, overlapping and usually ascending, mostly 0.4 - 4.4 mm wide, but varying within the specimens, branching mostly irregular; upper side whitish grey, often coloured brownish grey by dust particles, sometimes partly brownish yellow to yellow, lower side whitish grey with cracked cortex, fairly much of the lower cortex remaining making the thallus rather sturdy. Short hairs, c. 25 - 50 µm long, usually covering upper side of thallus, longer hairs, c. 0.05 - 0.24 mm long, mainly at lobe tips and sometimes also on apothecium margins and on remaining cortex strands on the lower side. Apothecia found in all known specimens, laminal, dispersed over the thallus, flat to usually becoming folded at maturity, lecanorine, 1 - 2.5 - 6.4 mm in diameter, sessile to constricted at the base and distinctly stipitate at maturity, stipe compressed, 0.4 - 1.5 / 0.5 - 2.4 mm in diameter; thalline margin 0.07 - 0.16 mm, even to slightly crenulate, flat to involute, yellow to orange or grey when shaded from light, growing in shade or when too much debris and dust have been caught up in the hairs; disc orange to reddish orange, flat to concave; proper margin annular, wedge-shaped, c. 150 µm wide at the top and extending c. 50 µm in under the hypothecium; cortex prosoplectenchymatic, varying in thickness, 15 - 30 µm at the top and 5 - 105 µm at the base; hypothecium light brownish, 27 - 50 µm high; hymenium hyaline, 65 - 85 µm high; paraphyses straight, unbranched or with 1 - 2 branches, moniliform with apical two to three cells swollen, cells 4 - 8 µm long and 3 - 6 µm wide, cells further down c. 10 µm long and 2 - 2.5 µm wide, single anastomoses not uncommon. Spores ellipsoid, straight or sometimes slightly curved, polarilocular, hyaline, 13 - 16 - 19 / 6 - 7 - 8 µm, with narrow septa, 1.5 - 2.0 - 2.5 µm. Pycnidia usually rather few but in some specimens numerous, immersed or protruding, laminal or more rarely subterminal or marginal, yellowish orange to orange, large, 0.16 - 0.28 - 0.47 mm in diam.; conidia bacilliform to narrowly ellipsoid, 3 - 3.7 - 4.5 / 1 - 1.6 - 2 µm (Fröden & Litterski 2005: 24).
Algae: Green alga.
Chemistry: Chemosyndrome A, with the anthraquinone parietin as the major component and small proportions of emodin, fallacinal, teloschistin, parietinic acid, and erythroglaucin (Søchting & Frødén 2002 as Teloschistes brevior).
Ecology: Corticolous.
Molecular data: Genbank
Distribution: Continental regions of Asia. Database
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