ITALIC 8.0

Leptogium corticola (Taylor) Tuck.

in Lea, Cat. Pl. Cincinnati: 47, 1849. Basionym: Collema corticola Taylor - London J. Bot., 5: 195, 1847.

Synonyms: Leptogium cimiciodorum A. Massal.

Distribution: N - VG, Ven (Lazzarin 2000b, Nascimbene & Marini 2010), Lomb, Piem. C - Tosc, Laz (Munzi & al. 2007), Abr (Recchia & Villa 1996). S - Camp (Jatta 1909-1911), Cal (Puntillo 1996), Si (Ottonello & al. 2011).

Description: Thallus foliose, subgelatinous when wet, loosely adnate, 2-8 cm wide. Lobes irregular, elongate, flat, separate, 2-10 mm wide, up to 300 µm thick, with rotund, entire, often upturned apices. Upper surface medium grey, dull, strongly and irregularly wrinkled, not isidiate. Upper and lower cortices consisting of a single layer of irregularly isodiametrical cells, the internal part5 of thallus with loosely interwoven chains of Nostoc and hyphae. Lower surface pale grey, smooth to wrinkled, with scattered tufts of white hairs, but not densely tomentose. Apothecia common, lecanorine, laminal, sessile, 0.5-2 mm across, with a brown, concave to convex disc and an often wrinkled thalline margin. Proper exciple euparaplectenchymatous; epithecium brownish; hymenium colourless, 90-150 µm high, K/I+ blue; paraphyses simple, 2-3 µm thick at mid-level, the apical cells slightly swollen; hypothecium colourless. Asci 8-spored, cylindrical-clavate, the apex strongly thickened, the apical dome K/I+ pale blue, with a downwardly projecting K/I+ deep blue tubular structure. Ascospores hyaline, submuriform, with 3-5 transverse septa and 0-1 longitudinal septa, ellipsoid to slightly subfusiform, 30-56 x 10-20 µm. Photobiont cyanobacterial (Nostoc, the cells in long chains). Spot tests: all negative. Chemistry: without lichen substances.

Note: a mild-temperate to humid subtropical lichen found in ancient, humid forests. Most of the records are old: presently the species is extinct in large parts of the country, especially in Northern Italy.

Growth form: Foliose, broad lobed

Substrata: bark

Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)

Reproductive strategy: mainly sexual

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: extremely rare

Humid mediterranean belt: extremely rare

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

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (6874)
2001/11/26

Felix Schumm - CC BY-SA 4.0

[ABL50540], Brazil, Sena Madureira, Reserva extrativista Cazumbá- Iracema, 2 km E of Núcleo Cazumbá, on tree bark in disturbed rain forest. 09°07’ S, 68°56’ W, 170 m. Leg. A. Aptroot (no 50540), M. Cáceres & J. Cavalcante, 12.04.2019. Det. A. Aptroot. 2019.

Felix Schumm - CC BY-SA 4.0

[ABL50540], Brazil, Sena Madureira, Reserva extrativista Cazumbá- Iracema, 2 km E of Núcleo Cazumbá, on tree bark in disturbed rain forest. 09°07’ S, 68°56’ W, 170 m. Leg. A. Aptroot (no 50540), M. Cáceres & J. Cavalcante, 12.04.2019. Det. A. Aptroot. 2019.