Leptogium cyanescens (Ach.) Körb.

Syst. Lich. Germ.: 420, 1855. Basionym: Collema tremelloides f. cyanescens Ach. - Syn. Meth. Lich.: 326, 1814.
Synonyms: Leptogium caesium (Ach.) Vain.
Description: Thallus foliose, subgelatinous when wet, closely to loosely adnate, 1-5(-10) cm wide, the lobes irregular, elongate, flat, separate, 4-5(-10) mm wide, papery thin when dry, (35-)70-100(-120) µm thick when wet, entire, dentate to irregularly cut, with rotund apices, isidiate. Upper surface blue-grey, smooth to somewhat wrinkled, with dense, laminal to marginal, usually cylindrical, simple to eventually branched, sometimes flattened isidia. Lower surface grey, smooth, with scattered tufts of white hapters but not densely tomentose. Upper and lower cortices consisting of a single layer of isodiametrical, 5-8 µm wide cells, internally with loosely interwoven chains of Nostoc and hyphae. Apothecia rare, lecanorine, laminal, sessile to substipitate, 0.5-2 mm across, with a brown disc and an often isidiate thalline margin. Thalline exciple thick, paraplectenchymatous; proper exciple thin, of periclinally arranged hyphae; epithecium pale brown; hymenium colourless, 95-135 µm high, I+ blue; paraphyses simple, c. 1 µm thick at mid-level, the apical cells slightly swollen; hypothecium colourless. Asci 8-spored, cylindrical-clavate, the apex strongly thickened, the apical dome K/I+ pale blue, with a downwardly projecting K/I+ deep blue tubular structure. Ascospores 3-septate to submuriform, hyaline, ellipsoid, (15-)18-23(-25) x (6-)7-10(-12) µm. Photobiont cyanobacterial (Nostoc, the individual cells 4-6 µm wide, arranged in long chains). Spot tests: all negative. Chemistry: without lichen substances.
Growth form: Foliose, broad lobed
Substrata: bark
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Montane belt: extremely rare
Dry submediterranean belt: extremely rare
Humid submediterranean belt: very rare
Padanian area: 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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Rarity

absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
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Occurrence data
Predictive map

Felix Schumm - CC BY-SA 4.0
[19062], Norfolk Island. Mt. Pitt Reserve, Selwyn Pine Track, 29°01' S, 167°56'30'' E, 200 m, on Elaedendron. Leg. J.A. Elix (18725) & H. Streimann, 08.12.1984. LICH. AUSTRALASICI EXS. 083


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5240)
2001/11/26
detail of isidia


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5240)
2001/11/26


E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (30534)
2008.03.10


E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16294)
2008.03.10


E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (30534)
2008.03.10


E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5240)
2008.03.10


E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5240)
2008.03.10


E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5240)
2008.03.10


Gothamie Weerakoon; Owner: Gothamie Weerakoon


Gothamie Weerakoon; Owner: Gothamie Weerakoon


Felix Schumm - CC BY-SA 4.0
[14524], Seychellen, La Digue, zwischen Belle Vue (Nid d' Aigles) und Fond Piment, 4°22' S, 55°50' E, ca. 350 m. Leg. F. Schumm & J.-P. Frahm 03.10.2008, det. A. Aptroot 2008.


Felix Schumm - CC BY-SA 4.0
[14524], Seychellen, La Digue, zwischen Belle Vue (Nid d' Aigles) und Fond Piment, 4°22' S, 55°50' E, ca. 350 m. Leg. F. Schumm & J.-P. Frahm 03.10.2008, det. A. Aptroot 2008.


Felix Schumm - CC BY-SA 4.0
[14524], Seychellen, La Digue, zwischen Belle Vue (Nid d' Aigles) und Fond Piment, 4°22' S, 55°50' E, ca. 350 m. Leg. F. Schumm & J.-P. Frahm 03.10.2008, det. A. Aptroot 2008.


Felix Schumm - CC BY-SA 4.0
[14524], Seychellen, La Digue, zwischen Belle Vue (Nid d' Aigles) und Fond Piment, 4°22' S, 55°50' E, ca. 350 m. Leg. F. Schumm & J.-P. Frahm 03.10.2008, det. A. Aptroot 2008.


Felix Schumm - CC BY-SA 4.0
[19062], Norfolk Island. Mt. Pitt Reserve, Selwyn Pine Track, 29°01' S, 167°56'30'' E, 200 m, on Elaedendron. Leg. J.A. Elix (18725) & H. Streimann, 08.12.1984. LICH. AUSTRALASICI EXS. 083


Felix Schumm - CC BY-SA 4.0
[19062], Norfolk Island. Mt. Pitt Reserve, Selwyn Pine Track, 29°01' S, 167°56'30'' E, 200 m, on Elaedendron. Leg. J.A. Elix (18725) & H. Streimann, 08.12.1984. LICH. AUSTRALASICI EXS. 083


Felix Schumm - CC BY-SA 4.0
[19062], Norfolk Island. Mt. Pitt Reserve, Selwyn Pine Track, 29°01' S, 167°56'30'' E, 200 m, on Elaedendron. Leg. J.A. Elix (18725) & H. Streimann, 08.12.1984. LICH. AUSTRALASICI EXS. 083


Felix Schumm - CC BY-SA 4.0
[19062], Norfolk Island. Mt. Pitt Reserve, Selwyn Pine Track, 29°01' S, 167°56'30'' E, 200 m, on Elaedendron. Leg. J.A. Elix (18725) & H. Streimann, 08.12.1984. LICH. AUSTRALASICI EXS. 083


Felix Schumm - CC BY-SA 4.0
[19062], Norfolk Island. Mt. Pitt Reserve, Selwyn Pine Track, 29°01' S, 167°56'30'' E, 200 m, on Elaedendron. Leg. J.A. Elix (18725) & H. Streimann, 08.12.1984. LICH. AUSTRALASICI EXS. 083


Felix Schumm - CC BY-SA 4.0
[19062], Norfolk Island. Mt. Pitt Reserve, Selwyn Pine Track, 29°01' S, 167°56'30'' E, 200 m, on Elaedendron. Leg. J.A. Elix (18725) & H. Streimann, 08.12.1984. LICH. AUSTRALASICI EXS. 083


Felix Schumm - CC BY-SA 4.0
[19062], Norfolk Island. Mt. Pitt Reserve, Selwyn Pine Track, 29°01' S, 167°56'30'' E, 200 m, on Elaedendron. Leg. J.A. Elix (18725) & H. Streimann, 08.12.1984. LICH. AUSTRALASICI EXS. 083


Juri Nascimbene
Altopiano del Canwsiglio, Regione Veneto, Prov. Treviso, Italy
2005


Felix Schumm – CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3


Curtis Randall Björk – CC BY-SA 4.0
British Columbia, Sabretooth Rapids, along the Clearwater River, Wells Gray Provincial Park Date: 2010-11-01 On rivershore rocks, in mistzone along whitewater


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Felix Schumm - CC BY-SA 4.0
[ABL48985], Brazil, Sena Madureira, Reserva extratevista Cazumbá- Iracema, Comunidade Cuidado, on tree bark in disturbed tropical rain forest. 09°07’ S, 68°59’ W, 150 m. Leg. A. Aptroot (no 48985), M. Cáceres & J. Cavalcante, 09.04.2019. Det. A. Aptroot. 2019.


Felix Schumm - CC BY-SA 4.0
[ABL48985], Brazil, Sena Madureira, Reserva extratevista Cazumbá- Iracema, Comunidade Cuidado, on tree bark in disturbed tropical rain forest. 09°07’ S, 68°59’ W, 150 m. Leg. A. Aptroot (no 48985), M. Cáceres & J. Cavalcante, 09.04.2019. Det. A. Aptroot. 2019.


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_cyanescens.htm
France, ession AFL 2007 - Finistère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_cyanescens.htm
France, Combre Chaulange, Villars-de-Lans - Isère
18/9/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_cyanescens.htm
France, Combre Chaulange, Villars-de-Lans - Isère
18/9/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_cyanescens.htm
France, Combre Chaulange, Villars-de-Lans - Isère
18/9/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_cyanescens.htm
France, Combre Chaulange, Villars-de-Lans - Isère
18/9/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_cyanescens.htm
France, Combre Chaulange, Villars-de-Lans - Isère
18/9/2015


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Stangala


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Cranou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Le Faouet


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=371&lang=en
France, Stangala


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Portugal: Madeira.


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Portugal: Madeira.


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Portugal: Madeira.


Felix Schumm - CC BY-SA 4.0
[10773], Portugal, Azoren, Sao Miguel: An der Straße SW von Lagoa das Fumas beim Parkplatz Reservada Florestal de Recreiro do Cerrado Bezerros, 37°44.632' N, 25°21.939' W, 430 m. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003. - Rinde zellig; Th. steril, mit Isidien.


Felix Schumm - CC BY-SA 4.0
[10773], Portugal, Azoren, Sao Miguel: An der Straße SW von Lagoa das Fumas beim Parkplatz Reservada Florestal de Recreiro do Cerrado Bezerros, 37°44.632' N, 25°21.939' W, 430 m. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003. - Rinde zellig; Th. steril, mit Isidien.


Felix Schumm - CC BY-SA 4.0
[10773], Portugal, Azoren, Sao Miguel: An der Straße SW von Lagoa das Fumas beim Parkplatz Reservada Florestal de Recreiro do Cerrado Bezerros, 37°44.632' N, 25°21.939' W, 430 m. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003. - Rinde zellig; Th. steril, mit Isidien.


Felix Schumm - CC BY-SA 4.0
[10773], Portugal, Azoren, Sao Miguel: An der Straße SW von Lagoa das Fumas beim Parkplatz Reservada Florestal de Recreiro do Cerrado Bezerros, 37°44.632' N, 25°21.939' W, 430 m. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003. - Rinde zellig; Th. steril, mit Isidien.


Felix Schumm - CC BY-SA 4.0
[10773], Portugal, Azoren, Sao Miguel: An der Straße SW von Lagoa das Fumas beim Parkplatz Reservada Florestal de Recreiro do Cerrado Bezerros, 37°44.632' N, 25°21.939' W, 430 m. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003. - Rinde zellig; Th. steril, mit Isidien.


Felix Schumm - CC BY-SA 4.0
[10773], Portugal, Azoren, Sao Miguel: An der Straße SW von Lagoa das Fumas beim Parkplatz Reservada Florestal de Recreiro do Cerrado Bezerros, 37°44.632' N, 25°21.939' W, 430 m. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003. - Rinde zellig; Th. steril, mit Isidien.


Felix Schumm - CC BY-SA 4.0
[10773], Portugal, Azoren, Sao Miguel: An der Straße SW von Lagoa das Fumas beim Parkplatz Reservada Florestal de Recreiro do Cerrado Bezerros, 37°44.632' N, 25°21.939' W, 430 m. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003. - Rinde zellig; Th. steril, mit Isidien.


Felix Schumm - CC BY-SA 4.0
[11000], Portugal, Azoren, Sao Miguel: Südufer des Lagoa das Furnas, 270 m, 37°45.022' N, 25°19.807' W. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003 - Rinde mit Zellnetz aus gleichdicken Wänden, Isidien teils korallin.


Felix Schumm - CC BY-SA 4.0
[11000], Portugal, Azoren, Sao Miguel: Südufer des Lagoa das Furnas, 270 m, 37°45.022' N, 25°19.807' W. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003 - Rinde mit Zellnetz aus gleichdicken Wänden, Isidien teils korallin.


Felix Schumm - CC BY-SA 4.0
[11000], Portugal, Azoren, Sao Miguel: Südufer des Lagoa das Furnas, 270 m, 37°45.022' N, 25°19.807' W. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003 - Rinde mit Zellnetz aus gleichdicken Wänden, Isidien teils korallin.


Felix Schumm - CC BY-SA 4.0
[11000], Portugal, Azoren, Sao Miguel: Südufer des Lagoa das Furnas, 270 m, 37°45.022' N, 25°19.807' W. Leg. F. Schumm, 03.06.2003, det. F. Schumm, 07.2003 - Rinde mit Zellnetz aus gleichdicken Wänden, Isidien teils korallin.


Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, in B. Montello
As Leptogium tremelloides


Triin Aimla; Owner: University of Tartu


Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.