Scytinium schraderi (Ach.) Otálora, P.M. Jørg. & Wedin

Fungal Divers., 64, 1: 291, 2013. Basionym: Parmelia schraderi Ach. - Meth. Lich., Sect. post.: 243, 1803.
Synonyms: Collema bacillare (Wallr.) Wallr.; Leptogium schraderi (Bernh.) Nyl.; Lichen schraderi Bernh. nom. illegit.
Distribution: N - VG, Frl, Ven (Nascimbene 2002), TAA (Nascimbene & al. 2022), Lomb (Ravera & al. 2017), Piem (Gheza 2020), Emil (Nimis & al. 1996, Fariselli & al. 2020). C - Tosc (Loppi & al. 1998, Putortì & al. 1999c), Umb (Genovesi & Ravera 2001, Ravera & al. 2006), Laz, Abr (Caporale & al. 2016, Di Nuzzo & al. 2021, Gheza & al. 2021), Sar. S - Pugl (Nimis & Tretiach 1999), Cal (Puntillo 1996), Si (Grillo & al. 2002, Grillo & Caniglia 2004, Caniglia & Grillo 2005).
Description: Thallus subfruticose, subgelatinous when wet, glossy brown, loosely attached, of subterete, 0.3-1 mm broad, up to 5(-7) mm long, subcylindrical, ascending to erect, heavily wrinkled branches, sometimes with a few dichotomous ramifications in upper part, often forming small tufts, sometimes with a few globular, 0.06-0.1 mm wide isidia. Branches originating from small squamules, which are evident only in very young specimens. Pseudocortex formed by regular layers of angular, c. 5 µm wide cells, the internal thallus parts not paraplectenchymatous. Apothecia rare, lecanorine, subterminal, strongly constricted at base, 0.5-1.5 mm across, with a reddish brown, concave to flat, smooth disc and a thin, but distinct, often granulose or minutely lobulate thalline margin. Thalline exciple pseudocorticate; proper exciple paraplectenchymatous: epithecium brownish; hymenium colourless, I+ blue; paraphyses coherent, mostly simple, the apical cells slightly swollen; hypothecium colourless. Asci 8-spored, narrowly clavate, the apex strongly thickened, the apical dome K/I+ pale blue, with a downwardly projecting K/I+ deep blue tubular structure. Ascospores at first 3-septate, then usually submuriform, hyaline, ellipsoid and pointed at both ends (20-)23-30(-35) x (8-)10-13(-15) μm, thin-walled. Photobiont cyanobacterial (Nostoc, the cells in rather long chains). Spot test: all negative. Chemistry: without lichen substances.
Note: on calciferous rocks and soil, often on other lichens (e.g. Romjularia lurida), sometimes on terricolous mosses, below the Alpine belt.
Growth form: Fruticose

Substrata: rocks, soil, terricolous mosses, and plant debris
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: rather rare
Padanian area: extremely rare
Humid submediterranean belt: rather rare
Humid mediterranean belt: rare
Dry mediterranean belt: extremely rare

pH of the substrata:

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(info)

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 DOLICHENS


Pier Luigi Nimis - CC BY-SA 4.0
TSB 6957



Pier Luigi Nimis - CC BY-SA 4.0
TSB 6957



Pier Luigi Nimis - CC BY-SA 4.0
TSB 6957



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (3298)
2001/11/26


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_schraderi.htm
France, 4/3/2016 - CBMC Chavaniac-Lafayette - Haute-Loire


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_schraderi.htm
France, 4/3/2016 - CBMC Chavaniac-Lafayette - Haute-Loire


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_schraderi.htm
France, 4/3/2016 - CBMC Chavaniac-Lafayette - Haute-Loire


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_schraderi.htm
France, 4/3/2016 - CBMC Chavaniac-Lafayette - Haute-Loire


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_schraderi.htm
France, 4/3/2016 - CBMC Chavaniac-Lafayette - Haute-Loire


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_schraderi.htm
France, 4/3/2016 - CBMC Chavaniac-Lafayette - Haute-Loire


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_schraderi.htm
France, 4/3/2016 - CBMC Chavaniac-Lafayette - Haute-Loire


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S/Scytinium_schraderi.htm
France, 4/3/2016 - CBMC Chavaniac-Lafayette - Haute-Loire


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Plonevez Porzay - Sainte Anne


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Plonevez Porzay - Sainte Anne


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Trefeuntec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Trefeuntec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Trefeuntec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Trefeuntec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Trefeuntec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Trefeuntec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Sainte Anne la Palud


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1088&lang=en
France, Sainte Anne la Palud