ITALIC 7.0

Polyozosia agardhiana subsp. sapaudica (Cl. Roux) ined.

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

Distribution: N - Ven, TAA (Nascimbene & al. 2022), 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, elongate-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 K/I+ 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:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Myriolecis_agardhiana_sapaudica.htm

France, Pré des Fabres Alt : 2022 m - Uvernet-Fours - Alpes-de-Haute-Provence
23/7/2014

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

Herbarium: TSB (24502)
2002/12/12

P.L. Nimis CC BY-SA 4.0

TSB 24502

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Myriolecis_agardhiana_sapaudica.htm

France, Pré des Fabres Alt : 2022 m - Uvernet-Fours - Alpes-de-Haute-Provence
23/7/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Myriolecis_agardhiana_sapaudica.htm

France, Pré des Fabres Alt : 2022 m - Uvernet-Fours - Alpes-de-Haute-Provence
23/7/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Myriolecis_agardhiana_sapaudica.htm

France, Pré des Fabres Alt : 2022 m - Uvernet-Fours - Alpes-de-Haute-Provence
23/7/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Myriolecis_agardhiana_sapaudica.htm

France, Pré des Fabres Alt : 2022 m - Uvernet-Fours - Alpes-de-Haute-Provence
23/7/2014