Gyalidea asteriscus (Anzi) Aptroot & Lücking

Bibl. Lichenol., 86: 67, 2003. Basionym: Solorinella asteriscus Anzi - Cat. Lich. Sondr.: 37, 1860.
Synonyms:
Distribution: N - TAA (Farkas & Lökos 1994), Lomb (Farkas & Lokos 1994), Piem (TSB 35294), VA (Farkas & Lökos 1994, Piervittori & Isocrono 1999).
Description: Thallus crustose, white-pruinose, thin and more visible in the wet state, reduced to 3-7 short, whitish grey to greenish grey, broadly triangular lobes radiating all around the apothecia. Apothecia frequent, zeorine, immersed, 0.5-2(-4) mm across, with a brownish black, concave to flat, smooth disc. Proper exciple of radially arranged hyphae; epithecium brownish; hymenium colourless, the hymenial gel not amyloid; paraphyses simple, not apically thickened, free; hypothecium colourless, lying above a layer of algae. Asci many-spored, narrowly clavate, thin-walled, apically thickened, the wall I-. Ascospores 1-septate, slightly constricted at septa, hyaline, narrowly ellipsoid to kidney-shaped, curved, (7-)11-17 x (2-)3-4 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a typical lichen of steppe grasslands on loess, whose distribution extends widely into Central Asia, found on Loess and (in the Alps) on soil deriving from calcareous schists; restricted to strongly continental Alpine valleys in Italy.
Growth form: Foliose

Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: extremely rare
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


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34296)
2001/12/07



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34296)
2001/12/07



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35294)
2002/07/14



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35294)
2002/07/14


Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.