Stereocaulon nanodes Tuck.

Am. J. Sc. Arts, 2, 28: 201, 1859.
Synonyms: Stereocaulon carinthiacum Frey; Stereocaulon hypopetraeum Vain. & Räsänen; Stereocaulon nanodes f. tyroliense (Nyl.) I.M. Lamb; Stereocaulon tyroliense Nyl.
Distribution: N - Frl (Tretiach & Hafellner 2000), Ven (Nascimbene 2002), TAA (Nascimbene 2003, Bilovitz & al. 2014b, Nascimbene & al. 2022), Lomb (Nascimbene 2006), Piem (TSB 33837).
Description: Primary thallus persistent, squamulose, consisting of 1-2(-5) mm tall, ascending to erect, flattened, grey, at first fan-shaped, later irregularly branched phyllocladia, which may be scattered or form swards, the lower surface sorediate. Pseudopodetia rarely present, up to 1(-1.5) cm tall, flattened, sparingly branched, whitish-green, blackish at base, covered with farinose soredia on the lower side of branches. Cephalodia infrequent, bluish-grey, containing Stigonema, located both among the basal phyllocladia and on the pseudopodetia. Apothecia very rare, dark brown. Proper exciple brown in outer part, colourless within; epithecium brown, K-; hymenium colourless; paraphyses simple, slightly thickened above, with a dark cap; hypothecium colourless. Asci 8-spored, cylindrical-clavate, with a K/I+ blue outer layer and apical dome, and a central, K/I+ darker blue tube, Porpidia-type. Ascospores mostly 3-septate, hyaline, fusiform, 25-54 x 2-4 µm. Conidia 1-celled, hyaline, bacilliform, slightly curved, 6-8 x c. 1 µm. Main photobiont chlorococcoid. Spot tests: K+ yellow, C-, KC+ violet (reaction often difficult to observe macroscopically, best evident on acetone extract on filter paper!), P- or P+ slowly pale yellow, UV+ blue-white. Chemistry: atranorin and variable amounts of lobaric acid.
Note: an arctic-alpine to boreal-montane, circumpolar lichen found on mineral-rich rocks, also under overhanging faces, on pebbles and large boulders, often on metal-rich substrata and in rather disturbed habitats in upland areas, reaching the nival belt; certainly more widespread in the Alps.
Growth form: Fruticose

Substrata: rocks
Photobiont: green algae other than Trentepohlia (primary); cyanobacteria, filamentous (e.g. Nostoc, Scytonema) (secundary, e.g. in cephalodia)
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Species of metal-rich rocks
Pioneer species

Commonnes-rarity: (info)

Alpine belt: rare
Subalpine belt: rather rare
Oromediterranean belt: absent
Montane belt: extremely rare
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

Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (3374)
2001/12/07



Pier Luigi Nimis - CC BY-SA 4.0
TSB 37419



Pier Luigi Nimis - CC BY-SA 4.0
TSB 37419



Pier Luigi Nimis CC BY-SA 4.0
TSB 41162


Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, Ergue Gaberic


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, Ergue Gaberic


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, St. Cadou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, St. Cadou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, St. Cadou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, St. Cadou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, St. Cadou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, St. Cadou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
France, St. Cadou


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
Belgium, Monthermé


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
Belgium, Monthermé


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
Belgium, Monthermé


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=992&lang=en
Belgium, Monthermé



Felix Schumm - CC BY-SA 4.0
[VZ1289], Bohemoslovacia. Slovacia, Carpates, montes Slovenské Rudohorie: Mníšek, in valle rivi Smolník prope Smolnická pila, 500 m. Ad scorias vetustas. Leg. A. Kiszely & A. V zda. Ex A. V ZDA: LICHENES SELECTI EXSICCATI NR. 1289.



Felix Schumm - CC BY-SA 4.0
[VZ1289], Bohemoslovacia. Slovacia, Carpates, montes Slovenské Rudohorie: Mníšek, in valle rivi Smolník prope Smolnická pila, 500 m. Ad scorias vetustas. Leg. A. Kiszely & A. V zda. Ex A. V ZDA: LICHENES SELECTI EXSICCATI NR. 1289.


Frey E. 1933. Cladoniaceae (unter Ausschluß ded Gattung Cladonia) und Umbilicariaceae. In: Rabenhrst’s Kryptogamenflora von Deutschland, Österreich und der Schweiz. 15: 1-208.
as S. carinthiacum


Frey E. 1933. Cladoniaceae (unter Ausschluß ded Gattung Cladonia) und Umbilicariaceae. In: Rabenhrst’s Kryptogamenflora von Deutschland, Österreich und der Schweiz. 15: 1-208.
as S. tyroliense