ITALIC 8.0

Thelopsis flaveola Arnold

Verh. zool.-bot. Ges. Wien, 23: 505, 1873.

Synonyms:

Distribution: N - Lomb (UPS- L-166842). S - Si (Nimis & al. 1994).

Description: Thallus crustose, thinly episubstratic, usually continuous, grey-green turning grey-white in the herbarium, sometimes poorly evident. Perithecia yellowish, 0.2-0.3 mm wide, completely to half immersed in the thallus, the ostiole often poorly visible. Exciple c. 30 μm thick, of intertwined hyphae with thick gelatinized walls, the innermost layer of thin-walled hyphae, colourless or brownish in upper part; periphyses septate, well developed in the periostiolar region, up to 20 μm long, c. 2 μm thick, with somehow pointed apical cells; paraphyses clearly septate, 170-230 μm long, 1.5-2 μm thick at base, c. 1 μm thick in upper part; hymenial gel I-. Asci up to 300-spored, cylindrical, tapering towards the apex, the wall thin, 1+ light blue, without a tholus. Ascospores 1-celled, hyaline, ellipsoid to ovoid, 4-6 x 3-4 μm, often with a large oil drop in the centre, surrounded by a thin gelatinous perispore. Photobiont trentepohlioid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a mainly temperate species found on bark of ancient deciduous trees, but also, in the subalpine belt, on bases of old Rhododendron shrubs; to be looked for further in the Alps. It is included as “Critically Endangered” in the Italian red list of epiphytic lichens (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: Trentepohlia

Reproductive strategy: mainly sexual

In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: extremely rare

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

Ulf Arub/Artdatenbanken Sorce: http://artfakta.artdatabanken.se/taxon/1555

Ulf Arub/Artdatenbanken

Sorce: http://artfakta.artdatabanken.se/taxon/1555