Micarea prasina Fr.
Syst. Orb. Veget.: 27, 1825.
Synonyms: Bacidia subviridescens (Nyl.) Zahlbr.; Biatorina prasina (Fr.) Stein; Bilimbia subviridescens (Nyl.) H. Olivier; Catillaria prasina (Fr.) Th. Fr.; Catillaria prasiniza (Nyl.) B. de Lesd.; Catillaria sordidescens (Nyl.) Zahlbr.; Lecidea abdita Erichs
Description: Thallus crustose, thinly episubstratic, bright green to olive-green, subgelatinous when wet, granular, consisting of densely crowded, globose, to 12-40 µm wide goniocysts which sometimes coalesce forming up to 60 µm wide granules, the outer hyphae with a greenish, K+ violet pigment. Apothecia micareoid, round, sessile, not constricted at base, 0.2-0.4 mm across, creamy white, pale grey to partly dark grey, sometimes brownish, strongly convex, hemispherical to subglobose, sometimes tuberculate and up to 0.8 mm across, without a distinct proper margin. Epithecium colourless to grey, with crystals visible under polarized light, when pigmented K+ violet, C+ violet-red, N-; hymenium colourless, 30-60 µm high, sometimes with crystals; paraphyses numerous, richly branched and anastomosing, 0.5-1(-1.5) µm thick, the apical cells to 2 µm wide; hypothecium colourless or rarely very pale yellow. Asci 8-spored, clavate to cylindrical-clavate, with a K/I + pale blue apical dome with a dark blue tubular structure, 25-55 x 8-12 µm. Ascospores 0-1-septate, hyaline, ovoid to oblong-ellipsoid, 8-12(-14) x 3-4.5(-5.5) µm. Pycnidia frequent, white or grey around the ostiole, K+ and C+ more or less violet, of 2 types: a) mesopycnidia 50-150 µm wide, globose or barrel-shaped, with a wide ostiole, producing cylindrical to obpyriform mesoconidia measuring 4-6 x 1-1.5 µm; b) micropycnidia 30-60 µm wide, globose, producing bacilliform or narrowly fusiform microconidia measuring 4-5.5- x 0.5-1 µm. Photobiont micareoid, the cells 4.5-7 μm wide. Spot tests: thallus and apothecia K-, C-, KC-, P-, UV- (except for the pigment in the outer hyphae of the goniocysts and in the apothecia, which reacts K+ violet, C+ violet-red). Chemistry: micareic acid, variable amounts of Sedifolia-grey pigment in thallus and apothecia.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: rather rare
Montane belt: rather common
Dry submediterranean belt: rare
Humid submediterranean belt: rare
Padanian area: extremely 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
Felix Schumm CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg.
Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (30721)
2001/12/10

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Felix Schumm – CC BY-SA 4.0
[19318], Germany, Baden-Württemberg, Kreis Göppingen, Waldgebiet 2.3 km nordwestlich von Wangen, 48.74312° N, 9.58412 ° E, 455 m, auf feuchten Baumstumpf von Picea am Brosenholzweg. Leg. et det. F. Schumm 09.04.2015

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Micarea_prasina.htm
France, Haute-Loire - (43) - Conservatoire Botanique CBNMC, alt : 700 m Chavaniac-Lafayette
4/3/2016
s. lat.

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Cenral Europe: Germany. (Coll/ident: Eichler & Cezanne).

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Micarea_prasina.htm
France, Haute-Loire - (43) - Conservatoire Botanique CBNMC, alt : 700 m Chavaniac-Lafayette
4/3/2016
s. lat.

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Micarea_prasina.htm
France, Haute-Loire - (43) - Conservatoire Botanique CBNMC, alt : 700 m Chavaniac-Lafayette
4/3/2016
s. lat.

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Micarea_prasina.htm
France, Sur Quercus suber - Ajaccio - Corse
18/10/2018
s. lat.

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Micarea_prasina.htm
France, Sur Quercus suber - Ajaccio - Corse
18/10/2018
s. lat.

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=506&lang=en
France, Ardennes

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_M/Texte_M/Micarea_prasina.htm
France, Haute-Loire - (43) - Conservatoire Botanique CBNMC, alt : 700 m Chavaniac-Lafayette
4/3/2016
s. lat.

Felix Schumm - CC BY-SA 4.0
[ABL50715], Brazil, Amazonas, Manaus, Reserva Florestal Ducke,
along trails in vincity of field station, in primary tropical rain forest on
wood. 2°56' S, 59°57' W, 50 m. Leg. A. Aptroot, (no. 50714), 22. June
2019, det. A. Aptroot 2019.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: rather rare
Montane belt: rather common
Dry submediterranean belt: rare
Humid submediterranean belt: rare
Padanian area: extremely 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

