ITALIC 8.0

Sarcogyne nivea Kremp.

Denkschr. kgl. bayer. bot. Ges., Abt. 2, 4: 212, 1861

Synonyms:

Distribution: N - Frl (Knudsen & al. 2023). S - Bas (Knudsen & al. 2023).

Description: Thallus crustose, thinly episubstratic, chalky white to pale brown, continuous to usually finely rimose, ecorticate-farinose, consisting of gelatinized hyphae with scattered algae covering the substrate. Apothecia lecideine, irregular in outline, 0.3-0.8(-1) mm across, with a dark brown to black (brown-red when moist), rarely bluish-pruinose, mostly flat disc, and a thin, usually persistent proper margin. Proper exciple (50-)100-120 μm wide, subparaplectenchymatous, of radiating hyphae with swollen and dark brown tips, the rim dark brown, the inner part colourless; epithecium brown; hymenium colourless, 80-110 µm high, the hymenial gel hemiamyloid, IKI+ light blue turning red; paraphyses coherent, simple to sparingly branched, regularly septate; hypothecium colourless. Asci 80-100-spored, cylindrical-clavate, strongly thickened at apex, the apical dome I-, the outer coat K/I+ blue. Ascospores 1-celled, hyaline, subglobose to broadly ellipsoid, 3-5 x (1-)2-3 μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on limestone at low elevations; rare in Europe (W-Alps, Pyrenees, Bavaria, Czech Republic), but perhaps not recognised or overlooked.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: very rare

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

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3

4

5

6

(info)

Predictive model

Herbarium samples

Index Fungorum GBIF