Peltigera ponojensis Gyeln.

Mem. Soc. Fauna Fl. Fenn., 7: 143, 1931.
Synonyms: Peltigera plittii Gyeln.; Peltigera plittii var. macrolobata Gyeln.
Distribution: N - Frl (Vitikainen 1994, Tretiach & Molaro 2007), Ven (Vitikainen 1994), TAA (Vitikainen 1994), Lomb (Gheza 2019, 2019b), Piem (Vitikainen 1994, Isocrono & al. 2003b), VA (Valcuvia 2000, Piervittori & al. 2004), Lig (Ravera & al. 2019a). C - Tosc (Benesperi 2007), Laz (Vitikainen 1994), Abr (Vallese & al. 2022), Mol (Nimis & Tretiach 2004, Caporale & al. 2008).
Description: Thallus foliose, broad-lobed, heteromerous and dorsiventral, loosely attached, forming 8-10(-15) cm wide rosettes. Lobes flattened, contiguous, with rounded ends, up to 1 cm broad, 5-6 cm long, with up-turned, flexuose margins, the upper surface smooth, densely arachnoid-tomentose in marginal parts, often glabrescent in central parts, whitish grey, often more brownish and glossy in central parts, turning blackish green when wet. Lower surface whitish, with raised, pale, 0.8-0.3 mm broad veins, white lenticular interstices, and 3-7(-12) mm long, pale, simple or sparingly branched rhizines. Upper cortex pseudoparenchymatous; medulla white; lower cortex absent. Apothecia frequent, saddle-shaped, terminal, dark brown. 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, fusiform, thin-walled, (31-)47-63(-78) x 2.5-5 µm. Photobiont cyanobacterial (Nostoc, the cells not in long chains). Spot tests: cortex and medulla K-, C-, KC-, P-, UV-- Chemistry: without lichen substances.
Note: on subneutral to slightly basic soil in grasslands and heaths, mostly in upland areas; often confused with P. rufescens in the past, this lichen is probably more widespread, also along the 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: very rare
Subalpine belt: rare
Oromediterranean belt: very rare
Montane belt: very rare
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
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 (1258)
2003/03/03



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (2815)
2003/03/03
lower surface with rhizines



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (1258)
2003/03/03



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43940



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43940



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43940


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_ponojensis.htm
France, 24/12/2014 - Lans en Vercors - Servagnet - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_ponojensis.htm
France, 24/12/2014 - Lans en Vercors - Servagnet - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_ponojensis.htm
France, 24/12/2014 - Lans en Vercors - Servagnet - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_ponojensis.htm
France, 24/12/2014 - Lans en Vercors - Servagnet - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_ponojensis.htm
France, 24/12/2014 - Lans en Vercors - Servagnet - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_ponojensis.htm
France, 24/12/2014 - Lans en Vercors - Servagnet - Isère