ITALIC 7.0

Polyblastia clandestina (Arnold) Jatta

Syll. Lich. Ital.: 568, 1900. Basionym: Sporodictyon clandestinum Arnold - Verh. zool.-bot. Ges. Wien, 21: 1135, 1871.

Synonyms:

Distribution: N - Ven, TAA (Nascimbene & al. 2022).

Description: Thallus crustose, endosubstratic, continuous, white to pale brown. Perithecia black, globose, 0.3-0.7 mm across, completely immersed and leaving pits in the rock. Involucrellum absent; exciple dark throughout, thicker in the region around the ostiole; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, K/I–, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum. Ascospores strongly muriform, hyaline, ellipsoid, 40-67 x 24-30 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on more or less calcareous rocks in sheltered situations near or above treeline; apparently restricted to the Alps, where it might be more widespread. According to Savić & al. (2008), the species belongs to the Thelidium-clade, not to Polyblastia s.str.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rare

Subalpine belt: very 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

Index Fungorum GBIF