Cladonia stellaris (Opiz) Pouzar & Vězda

Preslia, 43: 196, 1971. Basionym: Cenomyce stellaris Opiz in Ponfinkl - Böhm. Phan. Crypt. Gew.: 141, 1823.
Synonyms: Cladina alpestris auct. non (L.) Nyl.; Cladina stellaris (Opiz) Brodo; Cladonia aberrans (Abbayes) Stuckenb. non auct. ital.; Cladonia alpestris auct. non (L.) Rabenh.
Distribution: N - Ven (Nascimbene & al. 2006, Ravera & al. 2015), TAA (Caniglia & al. 2002, De Marco & al. 2003, Brackel 2013, Ravera & al. 2015), Lomb (Rivellini & Valcuvia 1996, Ravera & al. 2015), Piem (Isocrono & al. 2004, Morisi 2005), VA (Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999, Valcuvia 2000, Ravera & al. 2015), Emil (Fariselli & al. 2020).
Description: Primary thallus crustose, ephemeral and rarely seen, of dispersed, 0.15-0.3 mm wide granules. Podetia densely branched and shrubby, without a clearly defined main axis, hollow inside, pale yellowish white, isotomically-(mainly) tetrachotomously branched, 4-10(-15) cm tall, esquamulose, ecorticate, with an arachnoid surface, darkening but not melanotic at base, most branches of the same thickness, forming compact, rounded, subglobose heads which are 3-5 cm across (top of podetia regularly dome-shaped); axils between branches open or closed; terminal branchlets divergent in a star-like manner. Apothecia very rare, brown, convex, terminal. Asci 8-spored, clavate, thickened at apex, with a K/I+ blue tholus and a K/I+ strongly blue outer gelatinous sheath, Cladonia-type. Ascospores 1-celled, hyaline, ellipsoid. Pycnidia dark, semi-immersed on the tips of podetia, with a reddish jelly. Conidia cylindrical. Photobiont chlorococcoid. Spot tests: K-, C-, KC+ yellow, P-, UV+ pale blue. Chemistry: usnic, isousnic perlatolic and pseudonorrangiformic acid.
Note: a circumpolar subarctic-subalpine species found in wind-protected sites with a long snow-lie, restricted to upland areas of the Alps, with a single station in the northern Apennines. It was assessed as “Endangered” in Italy by Ravera & al. (2015).
Growth form: Fruticose

Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: extremely rare
Subalpine belt: extremely 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:

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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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Curtis Randall Björk CC BY-SA 4.0
Sugarbowl-Grizzly Den Provincial Park, British Columbia, Canada August 2017



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13552)
2001/12/04
tips of branches


Andres Saag; Owner: University of Tartu
originally as Cladina stellaris


Triin Aimla; Owner: University of Tartu
originally as Cladina stellaris


Giancarlo Medici; Owner: Giancarlo Medici
Sweden, Svezia
2010


Felix Schumm- CC BY-SA 4.0
[9904], Bohemia, Montes Šumava (Gabreta). Distr. Prachatice. Kašperské hory, loco dicto



Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005



Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005



Curtis Randall Björk, - CC BY-SA 4.0
Nisga'a Lava Flows, British Columbia, CanadaColumbia, Canada
2018


Felix Schumm- CC BY-SA 4.0
[9904], Bohemia, Montes Šumava (Gabreta). Distr. Prachatice. Kašperské hory, loco dicto "Šafá f vrch", 820-850 m. Moles saxorum, inter lapidos magnos siliceos. Leg. J. Kocourková & A. V zda, 20.10.1999.



Curtis Randall Björk – CC BY-SA 4.0
Corageous Lake, Northwest Territories, Canada
08.2011



P.L. Nimis CC BY-SA 4.0
TSB 44188



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43965



Curtis Randall Björk, - CC BY-SA 4.0
Sugarbowl-Grizzly Den Provincial Park, British Columbia, Canada
August 2017
as v. tilesii