ITALIC 8.0

Thelopsis lojkana (Poetsch ex Arnold) Nyl.

Flora (Regensburg), 64: 457, 1881.. Basionym: Sagedia lojkana Poetsch ex Arnold - Verh. zool.-bot. Ges. Wien, 25: 447, 1875.

Synonyms:

Distribution: N - Ven (Pistocchi & al. 2026).

Description: Thallus crustose, endosubstratic or very thinly episubstratic, grey-white, sometimes with a bluish tinge due to colonies of cyanobacteria. Perithecia scattered, half-immersed, 0.6-0.8 mm across, black, smooth, somewhat flattened or slightly depressed in the apical part. Exciple c. 100 μm wide in upper part, c. 50 μm wide in lower part, pale in inner part, brownish in outer part; hymenium colourless; periphyses c. 1 μm thick, up to 60 μm long; paraphyses 300-350 x c. 1.5 μm. Asci 50-100-spored, cylindrical, tapering towards the apex, the wall thin, I+ light blue, without a tholus. Ascospores (1-)3(-4)-septate, hyaline, spindle-shaped, 18-25 x 3.5-5 μm, thin-walled, surrounded by a thin gelatinous perispore. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on vertical to underhanging faces of limestone in the shade of montane forests; rare in the Central European mountains, with a few scattered records from the Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: Trentepohlia

Reproductive strategy: mainly sexual

In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

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

DOLICHENS

Source: Vězda A. (1968) Fol. Geobot. Phytotax. 3(4): 363-406 Taxonomische Revision der Gattung Thelopsis Nyl. (lichenisierte Fungi).