Circinaria calcarea (L.) A. Nordin, Savić & Tibell
Mycologia, 102: 1341, 2010. Basionym: Lichen calcareus L. - Sp. Pl.: 1140, 1753.
Synonyms: Aspicilia calcarea (L.) Bagl.; Aspicilia calcarea f. opegraphoides (DC.) J. Kickx f.; Aspicilia calcarea var. concreta (Schaer.) Hepp; Aspicilia contorta var. calcarea (L.) Körb.; Aspicilia lundensis (Fr.) Uloth; Lecanora calcarea (L.) Sommerf.; Lecanora calcarea var. concreta Schaer.; Lecanora lundensis (Fr.) Zahlbr.; Pachyospora calcarea (L.) A. Massal.; Urceolaria calcarea (L.) Ach.; Urceolaria calcarea var. farinosa Flörke non auct.
Description: Thallus crustose, episubstratic or rarely hemiendosubstratic, chalky white to rarely white-grey, 0.25-0.8 mm thick, finely rimose-areolate, sometimes delimited by a white to grey, more or less zoned prothallus, forming orbicular, up to 30 cm wide patches. Areoles angular, smooth, the peripheral ones often longer than wide and radially arranged. Cortex entirely filled by crystals visible under polarized light, its structure therefore poorly visible, lacking pigments; algal layer 30-65 µm high; medulla white, filled by crystals of calcium carbonate, 0.17-0.3 mm thick, I-. Apothecia aspicilioid, immersed, 1(-4) per areole, irregular in size and shape, from punctiform to angular or even linear, 0.15-0.7(-1) mm wide, with a concave to flat, black, sometimes slightly white-pruinose disc, and an up to 0.15 mm thick, chalky white, slightly raised, finally often excluded thalline margin. Proper exciple thin, colourless, extending below the hymenium; epithecium olive-green, N+ brighter green, K+ brown; hymenium colourless, I+ blue soon turning red-brown; paraphyses septate and anastomosing, sometimes moniliform in upper part; hypothecium colourless. Asci (2-)4(-6)-spored, clavate, the thin outer coat K/I+ blue, the wall and apical dome K/I-. Ascospores 1-celled, hyaline, broadly ellipsoid to globose, 18-30 x 14-28 µm. Pycnidia immersed, appearing as black dots. Conidia (6-)7.5-10(-11.5) x 1(-1.5) µm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: aspicilin.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: rather rare
Montane belt: very common
Dry submediterranean belt: extremely common
Humid submediterranean belt: extremely common
Padanian area: rare
pH of the substrata:
1 2 3 4 5
Solar irradiation:
1 2 3 4 5
Aridity:
1 2 3 4 5
Eutrophication:
1 2 3 4 5
Poleotolerance:
0 1 2 3
Altitudinal distribution:
1 2 3 4 5 6
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map
Current prediction (1981-2010)
Future prediction (2071-2100) SSP 1-2.6
Future prediction (2071-2100) SSP 5-8.5Predictive maps according to Francesconi et al. 2025
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (32108)
2001/12/03

A. Moro; Owner: Department of Life Sciences, University of Trieste
Sicilia, TP, Erice, dintorni della città
2008.04.05

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino (Rupingrande)
07.07.2016

Pier Luigi Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Val Rosandra, San Lorenzo near Belvedere
11/02/2017

Pier Luigi Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Val Rosandra, San Lorenzo near Belvedere
11/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21852)
2001/12/03
detail of apothecia

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Aspicilia_calcarea.htm
France, Session AFL Bourgogne - Combe Brochon - Côte-d'Or
10/7/2015
chémo. K-

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Aspicilia_calcarea.htm
France, Session AFL Bourgogne - Combe Brochon - Côte-d'Or
10/7/2015
chémo. K-

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: rather rare
Montane belt: very common
Dry submediterranean belt: extremely common
Humid submediterranean belt: extremely common
Padanian area: rare
pH of the substrata:
1 | 2 | 3 | 4 | 5 |
Solar irradiation:
1 | 2 | 3 | 4 | 5 |
Aridity:
1 | 2 | 3 | 4 | 5 |
Eutrophication:
1 | 2 | 3 | 4 | 5 |
Poleotolerance:
0 | 1 | 2 | 3 |
Altitudinal distribution:
1 | 2 | 3 | 4 | 5 | 6 |
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map



Predictive maps according to Francesconi et al. 2025

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (32108)
2001/12/03

A. Moro; Owner: Department of Life Sciences, University of Trieste
Sicilia, TP, Erice, dintorni della città
2008.04.05

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino (Rupingrande)
07.07.2016

Pier Luigi Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Val Rosandra, San Lorenzo near Belvedere
11/02/2017

Pier Luigi Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Val Rosandra, San Lorenzo near Belvedere
11/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

Felix Schumm CC BY-SA 4.0
[16503], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Göppingen, Gosbach-Bad Ditzenbach, 48,57461° N, 9,68471° E, 737 m, auf Kalkfelsen beim Tierstein. Leg. et det. Schumm 26.06.2010

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21852)
2001/12/03
detail of apothecia

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Aspicilia_calcarea.htm
France, Session AFL Bourgogne - Combe Brochon - Côte-d'Or
10/7/2015
chémo. K-

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Aspicilia_calcarea.htm
France, Session AFL Bourgogne - Combe Brochon - Côte-d'Or
10/7/2015
chémo. K-

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=322&lang=en
France, L'Aber Le Four à Chaux
