ITALIC 7.0

Porina austriaca (Körb.) Arnold

Flora, 65: 143, 1882. Basionym: Sagedia austriaca Körb. - Parerga Lichenol.: 356, 1863.

Synonyms: Pseudosagedia austriaca (Körb.) Hafellner

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

Description: Thallus crustose, episubstratic, pale to dark grey or grey green, continuous or cracked. Perithecia black, but almost entirely covered by a thin thalline layer, 0.2-0.4 mm across. Involucrellum purplish brown (Pseudosagedia-violet pigment), K+ dark grey-brown, HCl+ red-purple to red-brown, of more or less uniform thickness; exciple dark throughout; hamathecium of mostly simple paraphyses; hymenial gel I-, K/I-. Asci 8-spored, clavate-cylindrical, thin-walled, functionally unitunicate, I-, K/I-. Ascospores 5-7-septate, hyaline or very pale green, fusiform, (18-)23-35(-40) x 6-9 μm. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P-. Chemistry: thallus without lichen substances.

Note: a poorly known species of shaded and humid surfaces of siliceous rocks near or above treeline, which needs further study.

Growth form: Crustose

Substrata: rocks

Photobiont: Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: very 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

Source: Keissler K. von 1938. Pyrenulaceae, Mycoporaceae, Coniocarpineae. In: Rabenhorst G L: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. 2nd, IX, Die Flechten, Abt. 1, 2. Gebr. Borntraeger, Leipzig, pp. 1-846.