Cetraria pinastri (Scop.) Gray

Nat. Arr. Brit. Pl., 1: 432, 1821. Basionym: Lichen pinastri Scop. - Flora Carniol., 2, 2nd ed.: 382, 1772.
Synonyms: Cetraria caperata sensu Vain.; Cetraria juniperina var. pinastri (Scop.) Ach.; Cetraria pinastri (Scop.) Gray; Platysma pinastri (Scop.) Frege; Tuckermannopsis pinastri (Scop.) Hale; Vulpicida pinastri (Scop.) J.-E. Mattsson & M.J. Lai
Distribution: N - VG, Frl (Tretiach & Hafellner 2000, Tretiach & Molaro 2007), Ven (Nascimbene & Caniglia 1997, 2000b, 2002c, 2003c, Caniglia & al. 1999, Nascimbene 2005c, 2008c, 2011, Nascimbene & al. 2006e, 2007, 2009c, 2010b, 2013b, 2014, Nascimbene & Marini 2007, Brackel 2013, Nimis & al. 2015), TAA (Nascimbene & Caniglia 2000b, 2002c, Caniglia & al. 2002, Nascimbene 2003, 2005b, 2006c, 2008c, 2014, Gottardini & al. 2004, Nascimbene & al. 2005, 2006, 2006b, 2006e, 2007b, 2008c, 2009, 2010, 2014, 2014c, Stofer 2006, Lang 2009, Brackel 2013, Nascimbene & Marini 2015, Nimis & al. 2015), Lomb (Rivellini 1994, Alessio & al. 1995, Arosio & Rinaldi 1995, Zocchi & al. 1997, Valcuvia & al. 2003, Dalle Vedove & al. 2004, Nascimbene & al. 2006e, Stofer 2006, Brackel 2013), Piem (Morisi & Sereno 1995, Piervittori 2003, Isocrono & al. 2004, 2006, 2007, Morisi 2005, Isocrono & Piervittori 2008), VA (Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999, Ghiraldi 2003, Isocrono & al. 2005, Matteucci & al. 2008, 2008c, Isocrono & al. 2008), Lig (Brunialti & al. 1999, Giordani & al. 2002, Giordani & Incerti 2008). C - Tosc (Loppi & al. 1994, Tretiach & Nimis 1994, Benesperi & al. 2007, Benesperi 2011, Brackel 2015), Marc (Nimis & Tretiach 1999), Umb (Ravera 1998, Ravera & al. 2006), Abr (Nimis & Tretiach 1999, Gheza & al. 2021), Sar (Nöske 2000). S - Cal (Puntillo 1996).
Description: Thallus foliose, forming irregular rosettes mostly <4 cm in diam. Lobes bright lemon-yellow to greenish yellow in shade-forms, smooth, dull, dorsiventral, adnate to ascending, (0.5-)1-3(-5) mm wide, with rounded apices and undulate, more or less ascending, sorediate margins. Soredia bright yellow, finely granular. Lower surface concolorous with upper surface or paler, with scattered, brownish white rhizines. Upper and lower cortex paraplectenchymatous; medulla yellow, very loose. Apothecia extremely rare, lecanorine, with a brown disc and a more or less smooth thalline margin. Asci 8-spored, broadly clavate, Lecanora-type. Ascospores 1-celled, colourless, subglobose, c. 5-6 µm in diam. Pycnidia rare, black, pyriform to subspherical, on marginal projections. Conidia bottle-shaped, 6-8 x 1-2 µm. Spot tests: cortex K-, C-, KC+ yellow, P-; medulla K-, C-, KC-, P-, UV+ blackish red. Chemistry: cortex with usnic acid; cortex and medulla with vulpinic and pinastric acids (major), zeorin and unknowns (accessory).
Note: a subarctic-subalpine to boreal-montane, circumpolar species found on basal parts of trunks, especially of conifers, and on twigs with long snow-lie, often associated with Parmeliopsis near treeline; common only in the Alps, much rarer, and mostly confined to Castanea or conifers stands in the Apennines.
Growth form: Foliose, broad lobed
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: extremely common
Oromediterranean belt: extremely rare
Montane belt: rather 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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Mark Rahill - CC BY-SA 4.0
USA, Vermont



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (29408)
2001/12/09


Andres Saag; Owner: University of Tartu


Mark Rahill - CC BY-SA 4.0
USA



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36845)
2008.02.25



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36845)
2008.02.25



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36845)
2008.02.25



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36845)
2008.02.25


Gabriele Gheza, Tromello (PV); Owner: Gabriele Gheza, Tromello (PV)



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Udine, Passo del Pura, Ampezzo Carnico, 1400 m
09.09.2016



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Udine, Passo del Pura, Ampezzo Carnico, 1400 m
09.09.2016



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



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



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Val Mazia
2017


Triin Aimla; Owner: University of Tartu



Curtis Randall Björk
N America


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