Nephromopsis nivalis (L.) Divakar, A. Crespo & Lumbsch

in Divakar & al., Fungal Diversity, 84: 113, 2017. Basionym: Lichen nivalis L. - Sp. Pl.: 1145, 1753.
Synonyms: Allocetraria nivalis (L.) Randlane & Saag; Cetraria nivalis (L.) Ach.; Flavocetraria nivalis (L.) Kärnefelt & A. Thell
Distribution: N - Frl (Tretiach & Hafellner 2000), Ven (Nascimbene & Caniglia 1997, 2003c, Caniglia & al. 1999, Giovagnoli & Tasinazzo 2014), TAA (Caniglia & al. 2002, Nascimbene 2008b, 2001b, Lang 2009, Bilovitz & al. 2014), Lomb (Rivellini 1994, Dalle Vedove & al. 2004, Gheza 2017, 2019b), Piem (Isocrono & al. 2004, Morisi 2005, Isocrono & Piervittori 2008), VA (Verger & al. 1993, Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999, Valcuvia 2000, Revel & al. 2001, Piervittori & al. 2004), Emil (Fariselli & al. 2020), Lig. C - Marc (TSB 24214), Abr (Nimis & Tretiach 1999, Di Nuzzo & al. 2021, Gheza & al. 2021).
Description: Thallus fruticose, once or twice dichotomously branched, cream-coloured, yellowish brown at the necrotic base, loosely attached, sometimes forming compact mats. Lobes 6-10 mm broad and 2-4 (-8) cm tall, (usually smaller in Italian material), foveolate and reticulately ridged, erect to ascending; underside corticate, with narrow, mostly marginal, whitish pseudocyphellae. Cortex thin, paraplectenchymatous in upper part; medulla white, rather lax. Apothecia extremely rare, zeorine, submarginal at lobe-ends, up to 8 mm across, with a brown disc. Epithecium brownish; hymenium and hypothecium colourless. Asci 8-spored, narrowly clavate, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 5-10 x 3-6 µm. Pycnidia black, marginal, slightly projecting. Conidia dumbbell-shaped (thickened at both ends), c. 6 x 1 µm. Photobiont chlorococcoid. Spot tests: cortex K-, C-, KC+ yellowish, P-; medulla K-, C-, KC-, P-. Chemistry: cortex with usnic acid; brownish parts at the base with anthraquinones.
Note: a circumpolar, arctic-alpine lichen, a typical element of tundra-like vegetation in open, dry habitats above treeline; common throughout the Alps, but surprisingly abundant also in the Gran Sasso Massif (Central Apennines).
Growth form: Fruticose

Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by thallus fragmentation

Commonnes-rarity: (info)

Alpine belt: common
Subalpine belt: very 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:

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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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Predictive model
Herbarium samples

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



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5044)
2001/12/05



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34817)
2002/02/06


Triin Aimla; Owner: University of Tartu


Leif Stridvall
Courtesy: Anita Stridvall


Leif Stridvall
Courtesy: Anita Stridvall


Leif Stridvall
Courtesy: Anita Stridvall


Leif Stridvall
Courtesy: Anita Stridvall


Mark Rahill - CC BY-SA 4.0
USA


Hillmann J. 1936. Parmeliaceae. In: Rabenhorst’s Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. 2nd, IX, Die Flechten, Abt. 5, 3. Borntraeger\Leipzig, pp. 1-309.