Pseudevernia furfuracea var. ceratea (Ach.) D. Hawksw.

Lichenologist, 4: 162, 1969. Basionym: Parmelia furfuracea var. ceratea Ach. - Meth. Lich.: 255, 1803.
Synonyms: Evernia furfuracea var. ceratea (Ach.) Opiz; Evernia olivetorina Zopf; Parmelia ceratea (Ach.) Sandst.; Parmelia furfuracea var. olivetorina (Zopf) Zahlbr.; Parmelia olivetorina (Zopf) Sandst.; Pseudevernia furfuracea var. olivetorina (Zopf) Zopf; Pseudevernia olivetorina (Zopf) Zopf
Distribution: N - Frl (Martellos 2003), Ven (Nascimbene & Caniglia 2000, 2002c, 2003c, Martellos 2003, Nascimbene & al. 2006e, Nascimbene & Marini 2007, Nascimbene 2008c), TAA (Nascimbene & Caniglia 2002c, Martellos 2003, Nascimbene 2005b, 2006c, 2008b, 2014, 2014c, Nascimbene & al. 2006e, 2007b, 2008c, 2014, 2022, Trindade & al. 2021), Lomb (Alessio & al. 1995, Martellos 2003, Nascimbene & al. 2006e, Nascimbene & Marini 2015, Gheza & al. 2023), Piem (Isocrono & Falletti 1999, Isocrono & al. 2004, 2006, Martellos 2003, Isocrono & Piervittori 2008, Isocrono & al. 2011), VA (Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999, Martellos 2003, Matteucci & al. 2008, Isocrono & al. 2008, Malaspina & al. 2014, Fariselli & al. 2020, Lich. Ital. Exs. 73: Isocrono & al. 2023), Lig (Martellos 2003). C - Tosc (Martellos 2003), Marc (Martellos 2003), Umb (Ravera 1998, 1999, Ravera & al. 2006), Abr, Sar (Martellos 2003). S - Bas (Martellos 2003), Cal (Martellos 2003).
Description: Thallus foliose to subfruticose, of prostrate to ascending, flattened, strap-shaped 1-10(-20) mm wide, several cm long, dichotomously branched lobes. Upper surface grey to brown in exposed situations, matt, with cylindrical, simple to branched isidia, rarely also with orbicular soralia; lower surface usually channelled, black in older parts, white near the tips, without rhizines. Cortex paraplectenchymatous; medulla white, rather lax. Apothecia very rare, lecanorine, to 15 mm across, more or less stalked, often irregular in form and sometimes with split margins, with a brown disc. Epihecium brown; hymenium and hypothecium colourless. Asci 8-spored, elongate-clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 7-10 × 4-6 µm. Pycnidia rare, immersed, black. Conidia sublageniform, 5-7 x c. 1 µm. Photobiont: chlorococcoid. Spot tests: cortex K+ yellow, C-, KC-, P-; medulla K-, C+ red, KC+ red, P-, UV-. Chemistry: cortex with atranorin and chloroatranorin, medulla with olivetoric acid.
Note: distinguished by the presence of olivetoric acid, this chemical strain is more frequent than the typical one in dry-continental areas (see Martellos 2003).
Growth form: Foliose, broad lobed
Substrata: rocks, bark, and lignum
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: rather common
Oromediterranean belt: very rare
Montane belt: rare
Submediterranean belt: extremely rare
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


P.L. Nimis CC BY-SA 4.0



P.L. Nimis - CC BY-SA 4.0


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France, Hanvec
on wood


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France, Hanvec
on wood


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France, Hanvec
on wood


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France, Hanvec
on wood


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France, Hanvec
on wood


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France, Hanvec
on wood


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France, Menez, Meur
on wood


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France
on wood


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=864&lang=en
France
on wood


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Commana
saxicolous


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Commana
saxicolous


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Roc'h Trédudon
saxicolous


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Roc'h Trédudon
saxicolous


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Roc'h Trédudon
saxicolous


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Roc'h Trédudon
saxicolous


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Roc'h Trédudon
saxicolous


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Roc'h Trédudon
saxicolous


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Roc'h Trédudon
saxicolous


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France, Roc'h Trédudon
saxicolous


Arnaud Delhoume - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France
saxicolous


Arnaud Delhoume - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=865&lang=en
France
saxicolous