ITALIC 8.0

Thelidium antonellianum Bagl. & Carestia

Atti Soc. Critt. Ital., 2: 326, 1880.

Synonyms: Involucrothele antonelliana (Bagl. & Carestia) Servít

Distribution: N - TAA, Piem (Isocrono & al. 2004).

Description: Thallus crustose, endosubstratic or very thinly episubstratic, often developed only around the perithecia, usually poorly evident, dirty white, continuous. Perithecia black, 0.2-0.35 mm across, half immersed in the rock, hemispherically projecting, not covered by a thalline layer. Involucrellum c. 70 μm thick, dimidiate or reaching the base of the perithecium, adpressed to exciple or slightly diverging in the lowermost part; exciple colourless to pale brown in lower part; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, ellipsoid to clavate, 73-93 x 22-36 μm, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of a delicate rostrum. Ascospores 1-septate, hyaline to yellowish when overmature, narrowly ellipsoid, slightly pointed at both ends, 16-20 x 6-8 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a poorly known species of crystalline, weakly calciferous schists above treeline, reaching the nival belt. The type material, from the Italian Alps, was collected at 4.500 m.

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: 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

Index Fungorum GBIF

Source: 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