ITALIC 8.0

Thelidium pertusatii (Garov.) Jatta

Syll. Lich. Ital.: 541, 1900. Basionym: Verrucaria pertusatii Garov. - Tent. Disp. Lich. Langob.: 61, tab. 4, fig. 4, 1865.

Synonyms:

Distribution: N - TAA (Nascimbene 2005, Thüs & Nascimbene 2008, Nascimbene & al. 2022), Piem, VA.

Description: Thallus crustose, episubstratic, thin to rather thick (30-145 μm), dark grey, dark brown or brown-black, continuous to minutely rimose, paraplectenchymatous. Cortex absent, but uppermost part of thallus with a brownish pigment. Perithecia black, sparse, 0.2-0.3 mm across, projecting, naked. Involucrellum very thick (115-170 μm in upper third), reaching the thallus base, 514-570 μm across; hamathecium of periphyses and periphysoids, interascal filaments absent; periphyses up to 45 μm long; hymenial gel I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, ellipsoid to clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of a delicate rostrum. Ascospores 1-septate, hyaline, ellipsoid, 26-40 x 12-19 μm, in part halonate (fresh material). Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: an amphibious species on frequently wetted siliceous rocks in alpine rivers and irrigated rocks. The type material is on granite, and was collected near a creek.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Periodically submerged (e.g. in creeks)

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: absent

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

Herbarium samples

Index Fungorum GBIF

Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain

G. Gibelli, in S. Garovaglio, 1865 Tentamen Dispositionis Methodicae Lichenum In Longobardia Nascentium. Mediolanum