ITALIC 7.0

Gyalideopsis modesta Vězda & Poelt

Herzogia, 2, 4: 472, 1973

Synonyms:

Distribution:

Description: Thallus crustose, episubstratic, rimose-areolate, with an uneven-verruculose surface, dark grey to blackish when dry, turning green when wet, poorly delimited, the areoles up to 0.5 mm wide, with slightly ascending margins. Apothecia half-immersed in the areoles, 0.2-0.5 mm across, with a concave to finally flat, brown disc and a thin, yellowish brown proper margin. Proper exciple 25-30 µm wide laterally, brown in outer part, colourless within; epithecium brown; hymenium colourless, 65-75 µm high; paraphyses branched and anastomosing, c. 0.8 µm thick; hypothecium colourless c. 10 µm high. Asci (4-)6(-8)-spored, cylindrical-clavate, thin-walled, apically thickened, the contents K/I+ reddish. Ascospores submuriform, with 3 transverse septa and (0-)3 longitudinal septa, constricted at septa, hyaline, ellipsoid to ovoid, 12-15 x 6-10 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on small siliceous pebbles in places with alternately moist and dry conditions; rare, only known from the Eastern Alps (Austria); to be looked for in the Italian Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

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

Index Fungorum GBIF

P.L. Nimis CC BY-SA 04

TSB 17366

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (17366)
2003/03/19
isotypus