Alyxoria ochrocincta (Werner) Ertz

Alyxoria ochrocincta (Werner) Ertz

in Diederich & al., Bull soc. nat. Luxemb., 113: 105, 2012. Basionym: Opegrapha ochrocincta Werner - Bull. Soc. Sc. Nat. Maroc, 19, 1: 46, 1939.

Synonyms: Opegrapha diaphoroides auct. non Nyl.

Distribution: N - Lig. C - Tosc (Putortì & Loppi 1999), Laz, Abr (Nascimbene & al. 2021), Sar. S - Pugl (Nimis & Tretiach 1999, Durini & Medagli 2004), Bas (Nimis & Tretiach 1999), Cal (Nimis & Puntillo 2003, Puntillo 2011), Si (Nimis & al. 1994).

Description: Thallus crustose, endosubstratic or thinly episubstratic, continuous to rimose-areolate, grey to brownish, sometimes with a reddish brown pruina, especially around the apothecia. Apothecia lirelliform, emergent, broadly ellipsoid to sublinear, 0.5-1.2 x 0.3-0.4 mm, usually simple, with an expanded, black but often white-pruinose disc, and a raised, black but often reddish-pruinose proper margin. Proper exciple black, carbonized, extending below the hymenium; epithecium dark brown, with darker granules; hymenium colourless, 60-75 mm high, I+ blue; paraphysoids branched and anastomosing, 1.5-1.7 μm thick, the apical cells hardly swollen; subhymenium reddish brown, 15-25 mm high, hypothecium black, carbonized. Asci 8-spored, cylindrical-clavate, the inner layer of endoascus amyloid in upper part, with a I+ blue ring visible around a small ocular chamber, Varia-type. Ascospores 3(-4)-septate, hyaline (overmature spores often brownish), ellipsoid, 12-18(-22) x 3-4(-5) μm, with a 0.2-0.5 μm thick, gelatinous perispore. Pycnidia black, sometimes reddish-pruinose at top, immersed. Conidia straight, 4-6(-7) x c. 1 μm. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P-; reddish pruina of apothecia, pycnidia and thallus K+ red, UV+ orange. Chemistry: unknown pigments in the reddish pruina.

Note: a Mediterranean species growing on shrubs and twigs of young trees in Mediterranean maquis, more rarely on trunks, in rather shaded and humid situations, most frequent in Tyrrhenian Italy.

Growth form: Crustose

Substrata: bark

Photobiont: Trentepohlia

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: absent

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: extremely rare

Humid mediterranean belt: rare

Dry mediterranean belt: extremely rare

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

P.L. Nimis CC BY-SA 4.0

TSB 16919

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

Herbarium: TSB (38298)
2008.02.23

P.L. Nimis CC BY-SA 4.0

TSB 16919

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021
lactophenol cotton blue

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021
hymenium I+blue

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021
hymenium I+blue

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021

Giulio Pandeli

Italy, Toscana, Prov. Livorno, coastal dunes with Juniperus
17.05.2021

real
time web analytics