Leptogium saturninum (Dicks.) Nyl.
Act. Soc. Linn. Bordeaux, 21: 272, 1856. Basionym: Lichen saturninus Dicks. - Fasc. Pl. Crypt. Brit., 2: 21, 1790.
Synonyms: Collema myochroum (Ehrh.) Rabenh.; Collema saturninum (Dicks.) DC.; Leptogium myochroum (Ehrh.) Nyl.; Mallotium saturninum (Dicks.) Gray; Mallotium tomentosum (Hoffm.) Körb.
Distribution: N - Frl, Ven (Nascimbene & Caniglia 2003c, Nascimbene 22011), TAA (Nascimbene & Caniglia 2000b, Nascimbene & al. 2005, 2006, 2007b, 2014, 2022, Thor & Nascimbene 2007, Obermayer 2011b, Nascimbene 2014, Nimis & al. 2015), Lomb (Gheza 2017, 2019), Piem (Isocrono & al. 2004), VA (Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999, Ongaro & al. 2022), Emil (Fariselli & al. 2020), Lig. C - Tosc (Tretiach & Nimis 1994, Benesperi & al. 2007, Benesperi 2011, Brackel 2015), Marc (Nimis & Tretiach 1999), Umb (Ravera 1998, Ravera & al. 2006, Brackel 2015, Laz (Ravera 2001), Abr (Olivieri & Pacioni 1996, Olivieri & al. 1997, 1997b, Loppi & al. 1999, Nimis & Tretiach 1999, Brackel 2015, Corona & al. 2016, Di Nuzzo & al. 2021, Gheza & al. 2021, Vallese & al. 2022), Mol (Caporale & al. 2008, Brackel 2020), Sar. S - Camp (Ravera & Brunialti 2013), Pugl, Bas (Potenza 2006, Potenza & Fascetti 2010, 2012), Cal (Puntillo 1995, 1996, Incerti & Nimis 2006), Si (Brackel 2008b, Campisi & al. 2020).
Description: Thallus foliose, broad-lobed, 2-8(-10) cm in diam., adnate. Lobes irregular, elongate, flat to concave, separate, 5-20 mm wide, 100-200(-300) µm thick, the apices rotund, entire to irregularly cut and isidiate, sometimes upturned, Upper surface dark olivaceous grey to almost black, usually dull, not much wrinkled, homogeneously covered with scattered to dense, granular to subcylindrical, black isidia which are usually darker than the thallus. Upper and lower cortices consisting of a single layer of irregularly isodiametrical cells, internally with loosely interwoven chains of Nostoc and hyphae. Lower surface pale to medium brown, wrinkled, covered in a dense white tomentum of cylindrical hairs (to 0.2 mm long), with long-cylindrical cells. Apothecia very rare, lecanorine, laminal, sessile, 0.5-2.5 mm across, with a brown disc and a smooth to granulose-isidiate thalline margin. Proper exciple euparaplectenchymatous; epithecium brownish; hymenium colourless; paraphyses simple, 1-2 µm thick at mid-level, the apical cells slightly swollen; hypothecium pale yellow. 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 submuriform with 3-4 transverse septa and 1 longitudinal septum, hyaline, ellipsoid to subfusiform, 20-25 x 7-10 µm. Photobiont cyanobacterial (Nostoc, the cells in long chains). Spot tests: all negative. Chemistry: without lichen substances.Note: a cool-temperate to boreal-montane, circumpolar lichen found on bark, rarely on mossy rocks, only locally common, especially in upland areas. The recent record from Tuscany by Pasquinelli & al. (2009), judging from the picture, is most probably wrong and is not accepted here. See also note on L. burnetiae.
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: extremely rare
Oromediterranean belt: absent
Montane belt: rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: absent
Dry mediterranean belt: absent
Predictive model
Herbarium samples
P.L. Nimis CC BY-SA 4.0
TSB 2539
Triin Aimla; Owner: University of Tartu
P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (37009)
2008.02.28
E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5239)
2008.03.10
lower surface
E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33327)
2008.04.02
Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.
Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.
P.L. Nimis CC BY-SA 4.0
TSB 2539
P.L. Nimis CC BY-SA 4.0
TSB 2539
Andres Saag; Owner: University of Tartu
P.L. Nimis CC BY-SA 4.0
TSB 37334
P.L. Nimis CC BY-SA 4.0
TSB 37334
P.L. Nimis CC BY-SA 4.0
TSB 37333
P.L. Nimis CC BY-SA 4.0
TSB 38741
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/
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Austria; Alps: Tirol.
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Austria; Alps: Tirol.
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: extremely rare
Oromediterranean belt: absent
Montane belt: rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: absent
Dry mediterranean belt: absent
Predictive model
| Herbarium samples |
Index Fungorum
GBIF
P.L. Nimis CC BY-SA 4.0
TSB 2539
Triin Aimla; Owner: University of Tartu
P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (37009)
2008.02.28
E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5239)
2008.03.10
lower surface
E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33327)
2008.04.02
Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.
Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.
P.L. Nimis CC BY-SA 4.0
TSB 2539
P.L. Nimis CC BY-SA 4.0
TSB 2539
Andres Saag; Owner: University of Tartu
P.L. Nimis CC BY-SA 4.0
TSB 37334
P.L. Nimis CC BY-SA 4.0
TSB 37334
P.L. Nimis CC BY-SA 4.0
TSB 37333
P.L. Nimis CC BY-SA 4.0
TSB 38741
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/
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_2/Leptogium_saturninum.htm
France, 2011 - Mont Saxonnex - Haute-Savoie
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Austria; Alps: Tirol.
