Sarcogyne algoviae H. Magn.

Rabenh. Krypt.-Flora, 9, 5, 1: 57, 1935.
Synonyms: Biatorella algoviae (H. Magn.) Zahlbr.
Distribution: N - Piem (TSB 34087).
Description: Thallus crustose, endosubstratic, inapparent. Apothecia lecideine, circular in outline, 0.2-0.5 mm across, at first immersed, then sessile, with a black, epruinose disc and an undulate, raised, incised proper margin. Proper exciple black and carbonized in outer part, paler within, not extending below the hymenium; epithecium brown-black; hymenium colourless, 50-60 μm high; paraphyses simple or sparingly branched in upper part, 1-2 µm thick, capitate; hypothecium pale. Asci >100-spored, cylindrical-clavate, strongly thickened at apex, the apical dome K/I-, the outer coat K/I+ blue. Ascospores 1-celled, hyaline, narrowly ellipsoid, 4-5 x 1-1.5 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on non- or weakly calciferous, mostly dolomitic rocks in sunny situations, with optimum above treeline, reaching the nival belt in the Alps.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: absent
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

Source: Westberg M. et al. MycoKeys 11: 33–61, 2015
holotype