ITALIC 8.0

Polyblastia quinqueseptata (Arnold) Zschacke

Rabenh. Krypt.-Flora, 9, 1, 1: 436, 1933. Basionym: Thelidium quinqueseptatum Arnold - Verh. zool. bot. Ges. Wien, 18: 709, 1808.

Synonyms:

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

Description: Thallus crustose, endosubstratic or rarely very thinly episubstratic, whitish, smooth to minutely rugose, sometimes inapparent. Perithecia black, 0.2-0.4 mm across (in section), almost completely immersed in the thallus, globose, with a slightly projecting ostiolar region. Involucrellum absent; exciple brown-black throughout, thicker around the ostiole; hamathecium of periphyses and slender, branched periphysoids; interascal filaments absent; hymenial gel I+ red, K/I+ blue. Asci 8-spored, ellipsoid to clavate, K/I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum. Ascospores 3-septate to rarely submuriform with an incomplete longitudinal septum, hyaline to finally yellowish, ellipsoid, 30-50 x 13-17 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on shaded surfaces of calcareous rocks in the mountains; closely related to P. sepulta.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: rather 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

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3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

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6

(info)

Predictive model

Index Fungorum GBIF