ITALIC 7.0

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. Lobes olivaceous to dark brown, wrinkled, rather glossy, flattened, rounded at apex, up to 10 mm long (usually less), 2-3 mm broad, smooth to wrinked; lower surface whitish or pale brown, with scattered, simple or slightly 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 mm across, with a reddish brown, glossy disc and a thick, smooth to crenulate margin often bearing scattered pseudocyphellae. Epithecium brown; hymenium and hypothecium colourless; paraphyses conglutinate. 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 viridis, 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:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

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5

6

(info)

Predictive model

Herbarium samples

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/