Gyalidea lecideopsis (A. Massal.) Vězda var. lecideopsis

Lettau ex Vezda, Folia Geobot. Phytotaxon., 1: 312, 1966. Basionym: Gyalecta lecideopsis A. Massal. - Miscell. Lichenol.: 39, 1856.
Synonyms: Gyalecta hyalina Hepp; Gyalecta stigmatoides (Nyl.) Boistel; Gyalidea albocrenata (Arnold) Lettau; Lecidea stigmatoides Nyl.
Description: Thallus crustose, endosubstratic or thinly episubstratic, often inconspicuous and poorly evident, smooth or finely granulose, grey-white to yellowish grey. Apothecia 0.2-0,6 mm across, with a concave, dark reddish brown, dark brown to black disc and a smooth, crenulate or radially split, mostly black to brown proper margin (often turning pure white in dry sites). Proper exciple 50-60 µm wide laterally, dark olive-brown in outer part, colourless or paler within; epithecium brown-green; hymenium brown-green in upper part, colourless in lower part, 100-130 µm high; paraphyses mostly simple, to 1 µm thick, not swollen at apex; hypothecium colourless or pale yellowish brown. Asci 6-8-spored, thin-walled, apically thickened, with a small ocular chamber. Ascospores muriform, hyaline, ovoid to broadly ellipsoid, (17-)22-30(-35) x (10-)12-15 µm, without a distinct perispore. Photobiont chlorococcoid, Cystococcus/Leptosira-like. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: extremely rare
Montane belt: extremely rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent

pH of the substrata:

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Altitudinal distribution:

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Rarity

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P.L. Nimis CC BY-SA 4.0
TSB 14644


Pier Luigi Nimis - CC BY-SA 4.0
Herbarium: TSB (14644)


Felix Schumm - CC BY 4.0
[VZ2407], Austria. Styria: Grazer Bergland, secus viam inter Rechbergsattel et Semriach prope Dreihofen, 950 m, In fossis viae, ad lapides humidos calcem continentes. Leg. H. Pittoni, J. Poelt et A. Vezda, 18.3.1990. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 2407.


Felix Schumm - CC BY 4.0
[VZ2407], Austria. Styria: Grazer Bergland, secus viam inter Rechbergsattel et Semriach prope Dreihofen, 950 m, In fossis viae, ad lapides humidos calcem continentes. Leg. H. Pittoni, J. Poelt et A. Vezda, 18.3.1990. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 2407.