Sarcogyne clavus (DC.) Kremp.

Lich. Fl. Bayerns: 212, 1861. Basionym: Patellaria clavus DC. in Lamarck & de Candolle - Fl. Franç., 3 ed., 2: 348, 1805.
Synonyms: Biatorella clavus (DC.) Th. Fr.; Lecanora eucarpa (Nyl.) Nyl.; Lecidea eucarpa Nyl.; Sarcogyne clavus f. macrocarpa (Franzoni & De Not.) H. Magn.; Sarcogyne eucarpa (Nyl.) Hellb.; Stereopeltis carestiae De Not.; Stereopeltis macrocarpa Franzoni & De Not.
Distribution: N - TAA, Lomb, Piem (Isocrono & al. 2004, Giordani & al. 2014, Watson 2014). C - Umb (Genovesi & al. 2002, Ravera & al. 2006), Sar (Nöske 2000). S - Camp (Ricciardi & al. 2000), Cal (MAF-Lich: 4425-1).
Description: Thallus endosubstratic, not evident or appearing as a greyish stain on the rock. Apothecia lecideine, dispersed or in small clusters, 1-3(-6) mm across, 0.3-1 mm high, strongly constricted at base to substipitate, the disc blackish red to black (red when wet), flat to slightly convex, epruinose, the margin black, thick, prominent, strongly crenulated and often splitting into sections, sometimes verrucose, tending to become thinner with age. Proper exciple up to 70(-80) µm thick laterally, black and carbonized in outer part, yellowish red within; epithecium yellow-brown, not carbonaceous, 10-15 µm high; hymenium colourless to pale yellow, 75-90(-115) µm high; paraphyses coherent, simple to sparingly branched, regularly septate, 1.7-2 µm thick at base, the apical cells 3.5 µm wide; hypothecium 60-100 µm high, brown in upper part (in thick sections), colourless with a reddish hue and obscured by calcium oxalate crystals in lower part. Asci >150-spored, clavate, strongly thickened at apex, the apical dome K/I-, the outer coat K/I+ blue. Ascospores 1-celled, hyaline, narrowly ellipsoid, 4-6 x 1-1.5(-2) µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on steeply inclined to rain-sheltered surfaces of hard, mineral-rich siliceous rocks, especially granite, mostly in fissures of the rock.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain

Commonnes-rarity: (info)

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

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Menez Bré



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13294)
2001/11/29



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35295)
2002/07/15



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35295)
2002/07/15


Magnusson A. H. (1935) Acarosporaceae, Thelocarpaceae. - In: Rabenhorst G. L.: Kryptogamen-Flora von Deutschland, Österreich, und der Schweiz-. 2nd- IX. Die Flechten. Abt. 5- 1. Gebr. Borntraeger. Leipzig, pp. 1-318. – Public Domain


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_S/Text_S2/Sarcogyne_clavus.htm
France, Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S2/Sarcogyne_clavus.htm
France, Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S2/Sarcogyne_clavus.htm
France, Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S2/Sarcogyne_clavus.htm
France, Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S2/Sarcogyne_clavus.htm
France, Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Text_S2/Sarcogyne_clavus.htm
France, Corse


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Cast


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Cast


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Cast


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Cast


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Rospico


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Menez Bré


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Menez Bré


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Menez Bré


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Menez Bré


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=244&lang=en
France, Menez Bré



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13294)
2001/11/29