Cetraria sepincola (Ehrh.) Ach.

Meth. Lich.: 297, 1803. Basionym: Lichen sepincola Ehrh. - Hannover Mag., 21: 203, 1783.
Synonyms: Cetraria scutata (Wulfen) Poetsch non auct.; Tuckermannopsis sepincola (Ehrh.) Hale
Distribution: N - Frl, Ven (Tretiach 1993), TAA (Caniglia & al. 2002, Nascimbene & al. 2006e, 2007b, 2009, 2022, Nimis & al. 2015), Lomb, Piem (Isocrono & al. 2004), VA (TO 1217), Lig.
Description: Thallus foliose to subfruticose, almost monophyllous, often more thalli appearing together in colonies of small lobes radiating from the substrate, forming 1-2 cm wide, cushion-like tufts. Lobes olivaceous to dark brown, rather glossy, flattened, rounded at apex, up to 10 mm long (usually less), 2-3 mm broad, smooth to wrinkled; lower surface whitish or pale brown, with scattered, simple or sparingly branched rhizines. Upper and lower cortex prosoplectenchymatous, with a non-pored epicortex, the cell walls containing Cetraria-type lichenan; medulla white, rather loose. Apothecia very numerous and often obscuring the lobes, lecanorine, submarginal to terminal, up to 3.5(-4) mm across, with a reddish brown, glossy disc and a thin, smooth to crenulate margin often bearing scattered pseudocyphellae. Epithecium brown; hymenium and hypothecium colourless; paraphyses coherent. Asci 8-spored, thick-walled, the apex I+ blue with a wide, divergent axial body, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 6-10 x (3.5-)5-7(-10) μm. Pycnidia black, mostly marginal, slightly projecting. Conidia dumbbell-shaped (enlarged at both ends), 5-7 x c. 1 μm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: medulla with lichesterinic and protolichesterinic acid.
Note: a subarctic-subalpine, circumpolar species found near treeline on small twigs of shrubs and trees, especially Betula, Alnus alnobetula, Rhododendron ferrugineum, mostly near the ground and in areas with siliceous substrata; confined to the Alps in Italy and very rare in dry areas.
Growth form: Fruticose

Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: rather 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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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

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


Leif Stridvall



Pier Luigi Nimis - CC BY-SA 4.0
TSB 37222



Pier Luigi Nimis - CC BY-SA 4.0
TSB 37222



Pier Luigi Nimis - CC BY-SA 4.0
TSB 37222


P.L. nimis CC BY-SA 4.0
TSB 33734



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43817


Triin Aimla; Owner: University of Tartu


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/