Protoblastenia aurata Poelt & Vězda

in Poelt, Bestimmungsschl. eur. Flechten: 540, 1969.
Synonyms: Protoblastenia coniasis (A. Massal.) Poelt planta sed non nomen
Distribution: N - TAA (Nascimbene & al. 2021, 2022), Emil, Lig (M Herb. Klement 04975).
Description: Thallus crustose, thinly episubstratic, 0.1-0.25 mm thick, smooth, continuous to finely rimose, golden yellow to yellowish white. Apothecia slightly immersed to sessile, not constricted at base, 0.5-1.4 mm across, with a convex, orange-brown disc, without a distinct proper margin. Epithecium orange-brown, 15-30 µm high, with granular crystals reacting K+ red; hymenium colourless to pale yellow, 60-100 µm high, hemiamyloid; paraphyses coherent, sparingly branched and anastomosing, 2-4 µm thick, the apical cells slightly swollen, 3-4.5 µm wide; hypothecium colourless to yellowish, patchily pigmented. Asci 8-spored, elongate-clavate, with a thin, outer amyloid layer and a thickened tholus penetrated by a tube, the sides of which stain I/KI+ deep blue, Porpidia-type. Ascospores 1-celled, hyaline, ellipsoid, 10-13(-14.5) x 5.5-7 µm, without a distinct perispore. Spot tests: thallus and apothecia K+ red, C-, KC-, P-. Chemistry: thallus and apothecia with anthraquinones, mainly parietin.
Note: on calciferous siliceous rocks, especially schists, near and above treeline.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: extremely rare
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples
Index Fungorum GBIF


J. Nascimbene CC BY-SA 4.0
TSB 38492


Považské múzeum v Žiline – Source: https://www.slovakiana.sk/kulturne-objekty/cair-ko1jgox?content=CAIR_DIV_IMAGES_1&contentDo=urn:nbn:sk:cair-do3705s



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Eastern Alps
TSB 38492



Juri Nascimbene - CC BY-SA 4.0
Itslia, Veneto, BL, Vette di Feltre