Gyalecta schisticola Werner

Bull. Soc. Sci. Nat. Phys. Maroc, 14: 148, 1934.
Distribution: N - Lig. C – Tosc (TSB 14048), Sar (TSB 13206). S - Cal (CLU), Si (CLU).
Description: Thallus crustose, thinly episubstratic or poorly visible, formed by whitish granules dispersed among rock crystals. Apothecia sessile and constricted at base, 0.5-0.8(-1) mm across, with a concave, yellowish brown to brown disc, and a thick, prominent, smooth to crenulate proper margin. Proper exciple pale pink to brownish yellow in outer part, colourless within; epithecium colourless, barely distinguishable from the hymenium; hymenium colourless or yellowish in lower part, up to 165 µm high, inspersed with small yellow droplets; paraphyses coherent, clearly longer than the asci, c. 2 µm thick at mid-level, the apical cells hardly swollen; hypothecium colourless, 40-50 µm high. Asci 8-spored, thin-walled, lacking an apical apparatus or tholus, K/I+ blue. with uniseriate or partly biseriate spores. Ascospores muriform at maturity, with 3-6 transverse septa and 1-2 longitudinal septa, hyaline, ellipsoid, 18-30 x 9-12 µm. Photobiont trentepohlioid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a Macaronesian-Mediterranean species related to G. jenensis, but differing in some anatomical details, and growing on schists, mainly in more or less coastal situations; apparently with a Tyrrhenian distribution in Italy.
Growth form: Crustose
Substrata: rocks
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: rare
Dry mediterranean belt: very rare

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

P.L. Nimis CC BY-SA 4.0
TSB 40960

Pier Luigi Nimis - CC BY-SA 4.0
TSB 40960

Pier Luigi Nimis - CC BY-SA 4.0
TSB 40960

Pier Luigi Nimis
Spain, Canary Islands
TSB 18235

P.L. Nimis CC BY-SA 04
TSB 43738