Nephroma tangeriense (Maheu & A. Gillet) Zahlbr.

Cat. Lich. Univ., 8: 317, 1932. Basionym: Nephromium tangeriense Maheu & A. Gillet - Bull. Soc. Bot. France, 72: 869, 1926.
Synonyms:
Distribution: N - Piem, Emil (Ravera & al. 2022b), Lig (Ravera & al. 2022b). C - Tosc (Benesperi & al. 2007), Laz (TSB 6354), Sar. S - Cal (Puntillo 1996).
Description: Thallus foliose, heteromerous, dorsiventral, usually closely appressed, fragmented or forming up to 3-4(-10) cm wide rosettes, pale grey-brown to deep brown-black. Lobes 2-6 mm wide, fragile, (120)-140-160(-230) μm thick, the upper surface pale grey-brown to deep brown-black, smooth or slightly wrinkled, with scattered, crenulate, 1-2 mm wide laminal phyllidia with swollen tips, which sometimes are densely crowded in older thallus parts; lobe margins entire, often ascending and crisped. Lower surface pale at margins, brown-black in central parts, matt, smooth to ridged-undulate, without a tomentum. Upper and lower cortex pseudoparenchymatous; medulla ochre yellow to yellow-orange, the hyphae encrusted with acicular, pale yellow crystals. Apothecia rare, developing on the underside of lobes, ear- to kidney-shaped, up to 3 mm across, with a brown-black disc and an entire margin. Epithecium brownish; hymenium colourless, c. 70 μm high; paraphyses simple, coherent; hypothecium colourless to yellowish. Asci 8-spored, fissitunicate, the thickened apex with a K/I+ blue ring, Peltigera-type. Ascospores 3-septate, pale brown, 18-21(-22) x 5-6 μm. Photobiont cyanobacterial (Nostoc the cells not in long chains). Spot tests: cortex K-, C-, KC-, P-; medulla K+ pink to red. Chemistry: medulla with anthraquinones and hopane-6a,22-diol (T3 = zeorin) constant, hopane-6a,7/,22-triol (T6) constant), 15a-acetoxyhopan- 22-ol (T2), trace, and hopane-7/S,22-diol (T4), trace.
Note: a Mediterranean-Atlantic species found on rocks, more rarely on bark, in exposed situations, but in humid areas, usually at relatively low elevations. It is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).
Growth form: Foliose, broad lobed
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)
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: very rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: extremely rare
Dry mediterranean belt: absent

pH of the substrata:

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Poleotolerance:

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Predictive model
Herbarium samples
Index Fungorum GBIF


Felix Schumm – CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (19738)
2001/11/27


Nere Sorrentino
Spain, Canary Islands, Tenerife


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=146&lang=en
France, Pointe du Raz


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=146&lang=en
France, Pointe du Raz


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=146&lang=en
France, Pointe du Raz


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=146&lang=en
France, Pointe du Raz


Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=146&lang=en
France, Pointe du Raz


Bernarad Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=146&lang=en
France, Pointe du Raz


Bernarad Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=146&lang=en
France, Pointe du Raz


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


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


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


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