Myriolecis agardhiana subsp. sapaudica (Cl. Roux) Nimis & Cl. Roux

in Nimis, The Lichens of Italy. A Second Annotated Catalogue: 19, 2016. Basionym: Lecanora agardhiana subsp. sapaudica Cl. Roux - Bull. Soc. linn. Provence, 54: 120, 2003.
Synonyms: Lecanora agardhiana subsp. sapaudica var. lecidella (Poelt) Leuckert & Poelt?; Lecanora lecidella Poelt?
Distribution: N - Ven, Piem (TSB 32949). C - Abr (Nimis & Tretiach 1999, Gheza & al. 2021).
Description: Thallus crustose, endosubstratic, not apparent. Apothecia lecanorine, immersed in pits in the rock at least when young, later sometimes subsessile, 0.2-0.6 mm across, with a flat, dark brown to black, pruinose disc, and a thin, smooth, entire thalline margin. Thalline exciple corticate, the cortex usually more or less obscured by crystals which are insoluble in K, but soluble in N; epithecium blue-green, not granular, K-, N+ purple; hymenium colourless, 50-60 μm high; paraphyses slender, simple, free in K; hypothecium colourless, without granules. Asci 8-spored, clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 9-11 x 5.5-6.5 μm. Photobiont chlorococcoid. Spot tests: thallus (apothecial margin) K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: restricted to areas near or above treeline, this calcicolous taxon is certainly more widespread in the Alps, where it reaches the nival belt, and is also known from the central Apennines.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
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 CC BY-SA 4.0
TSB 24502



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (24502)
2002/12/12