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.
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, 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, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, 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.
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
Montane belt: rather common
Dry submediterranean belt: absent
Humid submediterranean belt: very rare
Padanian area: absent

pH of the substrata:

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Altitudinal distribution:

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Rarity

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Predictive map

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