Nephroma expallidum (Nyl.) Nyl.

Flora, 48: 428, 1865. Basionym: Nephromium expallidum Nyl. - Öfvers. K. Svensk. Vetensk.-Akad. Förh., 17: 295, 1860.
Synonyms:
Distribution: N - Ven (Nascimbene & Caniglia 2000, 2003c, Tomaselli & al. 2006), TAA (Nascimbene 2008b), Piem (Isocrono & al. 2004, Isocrono & Piervittori 2008).
Description: Thallus foliose, heteromerous, forming rosettes or irregular, up to 15 cm wide, loosely attached. Lobes to 2 cm wide, 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 cephalodia, esorediate; medulla white; lower surface corticated, pale brown to yellow-brown at margins, darker in central parts, glabrous or weakly pubescent, with rounded cephalodial warts and sparse, simple rhizines. 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 dorsal surface. 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 laminal, immersed, punctiform. Conidia rod-shaped, 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 triterpenes and unidentified, UV+ substances.
Note: an arctic-alpine species found on soil and amongst bryophytes over siliceous substrata, near or above treeline; probably restricted to the Alps, where it exceptionally reaches the nival belt.
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
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:

12345

Solar irradiation:

12345

Aridity:

12345

Eutrophication:

12345

Poleotolerance:

0123

Altitudinal distribution:

123456


Predictive model
Herbarium samples

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