Nephroma expallidum (Nyl.) Nyl.

Flora, 48: 428, 1865. Basionym: Nephromium expallidum Nyl. - Öfvers. K. Svensk. Vetensk.-Akad. Förh., 17: 295, 1860.
Synonyms:
Description: Thallus foliose, heteromerous, dorsiventral, irregular or forming up to 15 cm wide rosettes, loosely attached. Lobes to 2 cm wide, 0.5-0.7 mm thick, elongate, partly overlapping, with entire to crisped, often lobulate margins. Upper surface yellowish brown to yellowish white, brown in sun-forms, greenish when wet, often pruinose and slightly pubescent, smooth to slightly scabrid, with wart-like internal cephalodia, esorediate; lower surface corticate, pale brown to yellow-brown at margins, darker in central parts, glabrous or weakly pubescent, with rounded cephalodial warts and sparse, simple rhizines. Upper and lower cortex paraplectenchymatous; medulla white. Apothecia rare, immersed on lower surface at tips of lobes, orbicular, to 1.5 cm across, cup-shaped, with a brown disc and a prominent thalloid margin. Epithecium brownish; hymenium and hypothecium colourless. Asci 8-spored, fissitunicate, the thickened apex with a K/I+ blue ring, Peltigera-type. Ascospores 3-septate, pale brown, subfusiform, thick-walled, 17-21 x 5-6 µm. Pycnidia rare, black, marginal, immersed, punctiform. Conidia bacilliform, 3-4 x 1-2 µm. Photobiont: green algae (Coccomyxa); cephalodia with Nostoc. Spot tests: cortex and medulla K-, C-, KC-, P-. Chemistry: medulla with 15a-acetoxyhopan-22-ol (T2), hopane-6a,22-diol (T3 = zeorin), hopane-15a,22-diol, and unidentified UV+ substances.
Growth form: Foliose, broad lobed
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: extremely rare
Subalpine belt: extremely rare
Montane belt: absent
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: 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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Rarity

absent
extremely rare
very rare
rare
rather rare
rather common
common
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extremely common
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Occurrence data
Predictive map

Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15954)
2001/11/27
dry state


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15954)
2001/11/27
detail of lower surface with tomentum


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15954)
2001/11/27
wet state


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Wolfgang von Brackel - CC BY-4.0
Greenland, Qanassiassat


Wolfgang von Brackel - CC BY-4.0
Greenland, Qanassiassat