Pseudothelomma ocellatum (Körb.) M. Prieto & Wedin

Fungal Divers., 2016 (MB 817543). Basionym: Acolium ocellatum Körb. - Parerga Lichenol.: 285, 1861.
Synonyms: Cyphelium caliciforme (Flot.) Zahlbr.; Cyphelium ocellatum (Körb.) Trevis.; Thelomma ocellatum (Körb.) Tibell
Description: Thallus crustose, episubstratic, well-delimited, areolate to coarsely warted, grey, covered in subglobose, 27-40 µm wide, blue or brown-black isidioid outgrowths gathered in more or less convex, soralia-like clusters located on the top of 1.5-2(-2.5) mm wide warts with a rough upper surface. Cortex 22-32 µm thick, without crystals or granules, formed by anticlinally arranged hyphae sometimes with swollen and brownish apices, overlain by a c. 10-13 µm thick, colourless layer; medulla white, I+ dark blue. Apothecia rare, immersed in the warts, the disc 0.5-1 mm across, covered in a sometimes greenish yellow-pruinose mazaedium. Exciple not sclerotized, poorly developed laterally, forming a very thick, blackish brown cushion at the base, the upper part very thin and colourless, the central part brownish black, the outer parts yellowish-green; hymenium 80-110 µm high; hypothecium blackish brown. Asci cylindrical, formed singly, with a single functional wall layer dissolving at an early stage, with uniseriately arranged spores. Ascospores 1-septate, somewhat constricted at the septum, dark brown, broadly oblong at maturity, 22-28 x 12-15 µm, with a slightly uneven surface. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: occasionally with low amounts of usnic acid, atranorin, or norstictic acid; mazaedium and edge of exciple with rhizocarpic acid and epanorin.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: extremely rare
Subalpine belt: rather rare
Montane belt: extremely rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

absent
extremely rare
very rare
rare
rather rare
rather common
common
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extremely common
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Occurrence data
Predictive map

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21834)
2001/12/03
detail of soredia


Pier Luigi Nimis - CC BY-SA 4.0
TSB 41842


Pier Luigi Nimis - CC BY-SA 4.0
TSB 41842


Domenico Puntillo - CC BY-SA 4.0
Italy


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21834)
2001/12/03


Wolfgang von Brackel - CC BY-4.0
Czech Republic, Sumava, Borova Lada


Wolfgang von Brackel - CC BY-4.0
Czech Republic, Sumava, Borova Lada