ITALIC 7.0

Thelidium subsimplex Zschacke

Rabenhorst's Krypt.-Fl., 2nd ed., 9, 1, 1: 367, 371, 1933.

Synonyms:

Distribution:

Description: Thallus crustose, rather thick, whitish. Perithecia numerous, sometimes crowded, black, somehow glossy, 0.3-0.45 mm across, at first completely immersed. then hemispherically projecting. Involucrellum reaching down about two thirds of the perithecium; exciple thin, brown-black throughout; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, ellipsoid to clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of a delicate rostrum. Most ascospores 1-celled, a few 1-septate, hyaline, ellipsoid, 16-20 x 8-10 µm, without a gelatinous perispore. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on calciferous rocks near and above treeline; known from several scattered localities in the Eastern Alps, outside the Italian territory, to be looked for in the Italian Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

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