Peltigera malacea (Ach.) Funck

Crypt. Gew. Fichtelgeb., 33: 5, 1827. Basionym: Peltidea malacea Ach. - Syn. Meth. Lich.: 240, 1814.
Synonyms: Peltidea canina var. malacea (Ach.) Wahlenb.; Peltigera canina var. malacea (Ach.) Branth & Rostr.; Peltigera malacea f. crispa Gyeln.; Peltigera malacea f. neoimbricata Gyeln.; Peltigera malacea f. panniformis Vain.; Peltigera malacea var. dactylodes Gyeln.; Peltigera malacea var. imbricata Gyeln.; Peltigera malacea var. scabriosoides Trass; Peltigera malacea var. subpulverulenta Gyeln.; Peltigera polydactyloides f. fennica Gyeln.; Peltigera polydactyloides f. panniformis (Vain.) Gyeln.
Distribution: N - Frl, Ven (Caniglia & al. 1999, Thor & Nascimbene 2007), TAA (Vitikainen 1994, Nascimbene & al. 2005, 2006, 2022), Lomb (Anzi Lich. Ital. 89 and Lich. Sondr. 55: Vitikainen 1994, Gheza & al. 2022), Piem (Isocrono & al. 2003, Watson 2014), VA (Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999). C - Abr (Vallese & al. 2022). S - Bas (Potenza & Fascetti 2005, 2012, Potenza 2006, Puntillo & al. 2009).
Description: Thallus foliose, broad-lobed, heteromerous, dorsiventral, medium-sized to large, to 15(-20) cm in diam., up to 1.5 mm thick, bluish to greenish grey, dark green when wet, loosely attached. Lobes elongate, concave, contiguous, with rounded ends, up to 3 cm broad, to 10 cm long, often imbricate, with plane to ascending, often inrolled, erect-tomentose margins. Lower surface veinless, pale brown near margins, black in central parts, with sparse, fasciculate, up to 3 mm long, dark rhizines. Upper cortex paraplectenchymatous; lower cortex absent. Apothecia extremely rare (not seen in Italian material), terminal on short ascending lobes, brown-black, convex. Paraphyses simple, distinctly thickened above. Asci 8-spored, fissitunicate, the thickened apex with a K/I+ blue ring, Peltigera-type. Ascospores 3-5-septate, hyaline, acicular, thin-walled, (45-)52-70(-90) x 2.6-6.5 μm. Photobiont cyanobacterial (Nostoc the cells not in long chains). Spot tests: all negative or medulla weakly C+ red. Chemistry: five chemotypes with different combinations of tenuiorin, methyl gyrophorate, gyrophoric acid, 3-5-hopane triterpenoids, zeorin, and dolichorrhizin.
Note: a circumpolar, arctic-alpine lichen found in grasslands and scrublands near and above treeline, often amongst mosses, on siliceous substrata; most common in the Alps, but also found in the Southern Apennines.
Growth form: Foliose, broad lobed
Substrata: soil, terricolous mosses, and plant debris
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rather 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:

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Solar irradiation:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples
Index Fungorum GBIF

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 (141)
2001/12/05
lower surface



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (30563)
2003/03/03
dry state



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (30563)
2003/03/03
wet state


Henri Robert - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Belle-Ile-en-Mer


Henri Robert - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Belle-Ile-en-Mer


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_malacea.htm
France, Col de Balm (1253 m) - Argentières - Haute-Savoie


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_malacea.htm
France, Col de Balm (1253 m) - Argentières - Haute-Savoie


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Commana


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Commana


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Hôpital-Camfrout


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Hôpital-Camfrout


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Hôpital-Camfrout


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Hôpital-Camfrout


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Hôpital-Camfrout


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Ouessant


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Ouessant


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Ouessant


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Ouessant


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France


Henri Robert - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Belle-Ile-en-Mer


Henri Robert - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Belle-Ile-en-Mer


Henri Robert - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=570&lang=en
France, Belle-Ile-en-Mer


Triin Aimla; Owner: University of Tartu


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