ITALIC 8.0

Melanohalea septentrionalis (Lynge) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch

Mycol. Res., 108, 8: 883, 2004. Basionym: Parmelia olivacea var. septentrionalis Lynge - Bergens Mus. Årbok, 10: 4, 1912

Synonyms: Parmelia septentrionalis (Lynge) Ahti

Distribution:

Description: Thallus foliose, heteromerous, dorsiventral, brown, olive-brown or dark brown in sun-forms, usually smooth and glossy, moderately to loosely adnate, formig (1-)2-4(-5) cm wide rosettes. Lobes up to 4 mm wide, irregularly shaped, flat to slightly convex, with obscure to distinctive, elongate to irregular, marginal pseudocyphellae, the margins often swollen and more or less eroded; lower surface pale to dark brown, with sparse, concolorous rhizines. Upper cortex paraplectenchymatous, with a non-pored epicortex, the cell walls containing isolichenan; medulla white; lower cortex paraplectenchymatous. Apothecia lecanorine, usually numerous, crowded in central parts and often reaching the periphery of the thallus, up to 5 mm across, with a brown disc and a smooth to slightly crenulate, pseudocyphellate margin. Epithecium brown; hymenium colourless, (40-)50-70(-90) μm high; subhymenium 10-25 μm high; 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, ovoid to oblong or ellipsoid, (8-)10-12(-13) x (5-)7-9 μm. Pycnidia frequent, black. Conidia more or less dumbbell-shaped, 5-7 x c. 1 μm. Photobiont chlorococcoid. Spot tests: upper cortex K-, C-, KC-, P-; medulla K- or rarely K+ yellow, C-, KC-, P+ orange-red or rarely P-. Chemistry: fumarprotocetraric acid (major), protocetraric acid (traces), confumarprotocetraric acid (traces); rarely without lichen substances.

Note: on the bark of various trees (mostly Alnus, Salix and Betula), usually on the branches; widespread in the Holarctic region, more common in Scandinavia; in Central Europe it occurs in the montane to alpine belts, mostly in raised bogs, rarely on dwarf shrubs above treeline, with a few records from the Eastern Alps (Austria). To be looked for in Italy

Growth form: Foliose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

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

Index Fungorum GBIF

Leif Stridvall http://www.stridvall.se/la/galleries.php

E. Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (1115)
2008.04.01

E. Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (29397)
2008.04.01

E. Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (29397)
2008.04.01

E. Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (29397)
2008.04.01

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

Sweden: Värmland.