ITALIC 7.0

Sarcogyne belarusensis K.Knudsen, Tsurykau, Kocourk. & Hodková

Herzogia, 36, 1: 64, 2023

Synonyms:

Distribution: N - Frl (Knudsen & al. 2023). C - Sar (Knudsen & al. 2023).

Description: Thallus endolithic, inapparent. Apothecia lecideine, round, dispersed, broadly attached, sometimes semi-immersed in the rock when young, 0.2-0.7(-1) mm across, 0.2-0.4 mm thick, with a black to dark brown, usually pruinose, flat to convex disc, and a slightly raised, persistent, usually smooth proper margin. Proper exciple 40-100 μm wide, with a black outer part and a colourless inner part, the hyphae with black apical cells, reacting K/I-; epithecium reddish-brown c. 15 μm high; hymenium colourless, (80-)90-120 μm high, the hymenial gel hemiamyloid, K/I+ pale blue quickly turning brownish-red or red when squashed; paraphyses 1-1.5 μm thick, coherent, simple to sparingly branched, regularly septate, the apical cells unexpanded, sometimes with a 2(-4) μm wide gel cap; subhymenium c. 10 μm high, K/I+ blue; hypothecium indistinct from medulla, colourless, c. 100 μm high, the hyphae branching, c. 1 μm thick, obscure with crystals or not, K/I-, continuous with the endolithic thallus. Asci >100-spored, cylindrical-clavate, strongly thickened at apex, the apical dome K/I-, the outer coat K/I+ blue, 10-22 x 90-100 μm. Ascospores 1-celled, hyaline, ellipsoid but looking globose in asci, (3-)3.7- 4.7(-5.5) x (1.5-)1.7-2.2(-2.5) μm. Photobiont chloroccoid, the cells mostly present inside the rock around the apotecia. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances.

Note: currently known from Belarus, Germany and Italy on small calcareous stones and concrete, one specimen from calcareous conglomerate sandstone, at low elevations <300 m

Growth form: Crustose endolithic

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)

Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: very rare

Dry mediterranean belt: very rare

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

Index Fungorum GBIF

Kerry Knudsen

PRM, paratype