Melanohalea laciniatula (H. Olivier) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch

Melanohalea laciniatula (H. Olivier) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch

Mycol. Res., 108: 882, 2004. Basionym: Parmelia exasperatula var. laciniatula Flagey ex H. Olivier - Rev. Bot. Bull. Mens., 12: 69, 1894.

Synonyms: Melanelia laciniatula (H. Olivier) Essl.; Parmelia laciniatula (H. Olivier) Zahlbr.

Distribution: N - Frl, Ven, Piem (Matteucci & al. 2010), Lig (Giordani & al. 2002). C - Tosc (Loppi & al. 1994, Tretiach & Nimis 1994, Benesperi & al. 2007, Benesperi 2011, Nascimbene & al. 2015, Frati & Brunialti 2023), Umb (Ravera 1998, Ravera & al. 2006), Laz (Massari & Ravera 2002), Abr (Stofer 2006), Mol (Nimis & Tretiach 1999, Caporale & al. 2008, Ravera & al. 2010), Sar (Nöske 2000, Zedda 2002, Rizzi & al. 2011, Cossu 2013, Di Nuzzo & al. 2022). S - Camp (Aprile & al. 2003b, 2011, Nimis & Tretiach 2004, Garofalo & al. 2010, Catalano & al. 2016), Pugl (Nimis & Tretiach 1999), Bas (Nimis & Tretiach 1999), Cal (Puntillo 1996, Incerti & Nimis 2006), Si (Falco Scampatelli 2005).

Description: Thallus foliose, heteromerous, dorsiventral, adpressed but often raised at margins, forming 5-10 cm wide rosettes, several thalli often merging to cover larger surfaces. Lobes crowded and overlapping, short, up (1-)2-3 mm wide, indented, the marginal parts often shiny, the central parts of thallus panniform, densely covered in minute secondary, up to 1.5 mm wide, foliole-like lobules developing from isidia-like papillae bearing inconspicuous pseudocyphellae. Upper surface smooth or papillose especially in the marginal zone, brown-green to olivaceous brown; lower surface tan to pale brown, with simple, pale rhizines. Upper cortex paraplectenchymatous, with a non-pored epicortex, the cell walls containing isolichenan; medulla white; lower cortex paraplectenchymatous. Apothecia extremely rare (not observed in Italian material), lecanorine, sessile, to 2 mm across, with a brown disc and an often foliolose thalline margin. Epithecium brown; hymenium and hypothecium colourless. Asci 8-spored, clavate, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 7-9 x 4-7 μm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, N-, UV-. Chemistry: without lichen substances.

Note: a mainly Mediterranean-montane species found on the smooth bark of old deciduous trees, especially Fagus, in open, humid, mostly montane forests; most abundant in the Apennines, perhaps declining in the Alps, absent from urban areas.

Growth form: Foliose, broad lobed

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: rather common

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: very 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

Herbarium samples

P.L. Nimis CC BY-SA 4.0

TSB 36780

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

Herbarium: TSB (36780)
2008.02.28

E. Pittao

TSB 21978)

E. Pittao

TSB 21978)

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

Herbarium: TSB (10462)
2001/12/05

Harry Taylor; Owner: Natural History Museum London

Felix Schumm – CC BY-SA 4.0

[1165], Germany, Baden-Württemberg, det. K.Kalb.

Felix Schumm – CC BY-SA 4.0

[1165], Germany, Baden-Württemberg, det. K.Kalb.

Felix Schumm - CC BY-SA 4.0

[20352], Italia, Sardinia, Prov. Sassari, Gallura, montes Limbara, prope Vallicciola, 1000-1200 m, ad truncum Pseudotsugae douglasii. Leg. A. Vezda, 20.07.1987. A. VEZDA: LICHENES SELECTI EXSICCATI NR. 2213

Felix Schumm - CC BY-SA 4.0

[20352], Italia, Sardinia, Prov. Sassari, Gallura, montes Limbara, prope Vallicciola, 1000-1200 m, ad truncum Pseudotsugae douglasii. Leg. A. Vezda, 20.07.1987. A. VEZDA: LICHENES SELECTI EXSICCATI NR. 2213

Felix Schumm - CC BY-SA 4.0

[20352], Italia, Sardinia, Prov. Sassari, Gallura, montes Limbara, prope Vallicciola, 1000-1200 m, ad truncum Pseudotsugae douglasii. Leg. A. Vezda, 20.07.1987. A. VEZDA: LICHENES SELECTI EXSICCATI NR. 2213

Pier Luigi Nimis - CC BY-SA 4.0

Herbarium: TSB 10462

G. Incerti CC BY-SA 4.0

TSB 29777

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Melanohalea_exasperata.htm

France, Sur écorce de Quercus ilex - Coti-Chiavari, alt. 550 m - Corse
23/03/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Melanohalea_exasperata.htm

France, Sur écorce de Quercus ilex - Coti-Chiavari, alt. 550 m - Corse
23/03/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Melanohalea_exasperata.htm

France, Sur écorce de Quercus ilex - Coti-Chiavari, alt. 550 m - Corse
23/03/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Melanohalea_exasperata.htm

France, Sur écorce de Quercus ilex - Coti-Chiavari, alt. 550 m - Corse
23/03/2014

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