Nephroma resupinatum (L.) Ach.

Lichenogr. Univ.: 522, 1810. Basionym: Lichen resupinatus L. - Sp. Pl., 2: 1148, 1753.
Synonyms: Nephroma filarszkyanum Gyeln.; Nephroma papyraceum (Hoffm.) De Not.; Nephroma rameum A. Massal.; Nephroma resupinatum f. helvum A. Massal.; Nephroma resupinatum var. tomentosum (Hoffm.) Rabenh.; Nephroma tomentosum (Hoffm.) Flot.; Nephromium resupinatum (L.) Arnold; Nephromium tomentosum (Hoffm.) Nyl.; Peltidea resupinata (L.) Ach.; Peltigera resupinata (L.) DC.
Distribution: N - Frl (Tretiach & Molaro 2007), Ven (Lazzarin 2000b, Nascimbene & Marini 2010), TAA (Nascimbene & al. 2006e, 2007b), Lomb (Ravera & al. 2021b, Gheza & al. 2022), Piem (Isocrono & al. 2004, 2007), VA (Piervittori & Isocrono 1999), Emil (Tretiach & al. 2008, Brackel 2015, Fariselli & al. 2020), Lig (Brunialti & al. 1999). C - Tosc (Tretiach & Nimis 1994, Benesperi & al. 2007, Benesperi 2011, Brackel 2015), Marc (Nimis & Tretiach 1999), Umb (Ravera 1998, Ravera & al. 2006), Laz (Ravera 2001, Brackel 2015), Abr (Nimis & Tretiach 1999, Brackel 2015, Corona & al. 2016, Gheza & al. 2021), Sar. S - Camp (Ricciardi & al. 2000, Aprile & al. 2002, 2003, Nascimbene & al. 2010b, Blasi & al. 2010, Brunialti & al. 2013, Ravera & Brunialti 2013), Bas (Nimis & Tretiach 1999, Potenza 2006, Potenza & Fascetti 2010, Brackel 2011, Ravera & al. 2021c), Cal (Puntillo 1996), Si (Czeczuga & al. 1994, Ravera & al. 2021c).
Description: Thallus foliose, heteromerous, forming 3-10 cm wide rosettes, loosely adnate. Lobes 5-15 mm wide, elongate, entire or crenulate at margins, sometimes ascending and rarely with marginal or laminal phyllidia. Upper surface grey to grey-brown, dull, usually strongly pubescent; medulla white; lower surface pale brown to whitish, densely tomentose, with scattered, raised, white papillae. Apothecia common, immersed on lower surface at tips of lobes, up to 15 mm across, cup-shaped, sessile, with a brown disc and a prominent, foveolate-reticulate, usually finely hairy 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, fusiform, thin-walled, 21-24 x 4-6 µm. Pycnidia rare, mainly marginal, immersed, punctiform. Conidia rod-shaped, 4-5 x 1-2 µm, Photobiont cyanobacterial (Nostoc). Spot tests: upper cortex and medulla: K-, C-, KC-, P-. Chemistry: without lichen substances.
Note: a mainly temperate, holarctic lichen found on mossy trunks, rocks, more rarely on soil, in cool and sheltered habitats, with optimum in humid beech forests. It is included in the Italian red list of epiphytic lichens as “Near-threatened” (Nascimbene & al. 2013c).
Growth form: Foliose, broad lobed
Substrata: bark
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: extremely rare
Oromediterranean belt: absent
Montane belt: rather rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: very rare
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


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 (9013)
2001/11/27
detail of lower surface with tomentum



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34835)
2002/02/16
white papillae on undersurface



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9013)
2001/11/27



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36956)
2008.02.28



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36956)
2008.02.28



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36956)
2008.02.28



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36956)
2008.02.28



Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005


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


Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.


Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.