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), 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). 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 to 2.5 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. 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:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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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