Sagedia simoënsis (Räsänen) A. Nordin, Savić & Tibell

Mycologia, 102: 1346, 2010. Basionym: Aspicilia simoënsis Räsänen - Meddeland. Soc. Fauna Fl. Fenn., 1: 39, 1925.
Synonyms: Aspicilia montana (H. Magn.) Creveld; Lecanora bahusiensis H. Magn.; Lecanora isidiata (H. Magn.) H. Magn.; Lecanora simoënsis (Räsänen) Zahlbr.; Lecanora simoënsis var. isidiata H. Magn.; Lecanora variegatula H. Magn.
Distribution: N - Ven (Nascimbene 2003), TAA (Nascimbene 2004), VA (Favero-Longo & al. 2006, Isocrono & al. 2008, Favero-Longo & Piervittori 2009), Emil. C - Sar. S - Si.
Description: Thallus crustose, episubstratic, areolate, pale grey to grey, sorediate. Areoles angular, often finely subdivided into smaller units, bearing orbicular, well-delimited soralia-like clusters of coarsely granular to coralloid, dark grey isidioid outgrowths. Medulla white, I-. Apothecia rare, lecanorine-aspicilioid, 0.4-1 mm across, immersed in the thallus, with a concave to flat, black disc and a thin thalline rim. Epihecium olive-green, N+ emerald green; hymenium colourless; paraphyses simple or sparingly branched, anastomosing, moniliform in upper part; hypothecium colourless. Asci 8-spored, clavate, the thin outer coat K/I+ blue, the wall and apical dome K/I-. Ascospores 1-celled, hyaline, ellipsoid, 15-22 x 8-12 µm. Photobiont chlorococcoid. Spot tests: thallus K+ yellow turning red (needle-like red crystals) or rarely K+ yellow, C-, KC-, P+ bright to golden yellow. Chemistry: norstictic acid and/or stictic acid.
Note: a mostly sterile species with areolate thallus reacting K+ red, described from Finland as sorediate; the populations from the Alps have dense clusters of isidia later breaking down into soredia-like propagules (fitting Lecanora simoënsis var. isidiata H. Magn.). It grows on siliceous boulders visited by birds and is widely distributed, at least in the eastern Alps. The record from Sicilia (see Nimis 1993: 105), if confirmed, would suggest that the species should be looked for more intensively along the Apennines, in areas with siliceous substrata.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: very 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


P.L. Nimis CC BY-SA 04
TSB 43089


Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: Herb. J.Nascimbene
2003/03/31


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


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


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



Pier Luigi Nimis - CC BY-SA 4.0
TSB 16655



Pier Luigi Nimis - CC BY-SA 4.0
TSB 16655



Pier Luigi Nimis - CC BY-SA 4.0
TSB 16655



Pier Luigi Nimis - CC BY-SA 4.0
TSB 16655



Pier Luigi Nimis - CC BY-SA 4.0
TSB 42089



Pier Luigi Nimis - CC BY-SA 4.0
TSB 42089



Pier Luigi Nimis - CC BY-SA 4.0
TSB 42089



Pier Luigi Nimis - CC BY-SA 4.0
TSB 42091



Pier Luigi Nimis - CC BY-SA 4.0
TSB 38874



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: Herb. J.Nascimbene
2003/03/31