Icmadophila ericetorum (L.) Zahlbr.

Wiss. Mitt. Bosn. Herzeg., 3: 605, 1895. Basionym: Lichen ericetorum L. - Sp. Pl.: 1141, 1753.
Synonyms: Baeomyces aeruginosus (Scop.) DC.; Baeomyces icmadophilus (L. f.) Bory; Biatora icmadophila (L. f.) Fr.; Icmadophila aeruginosa (Scop.) Trevis.; Icmadophila aeruginosa var. teretocarpa A. Massal.; Icmadophila elveloides (Weber) Hedl.; Lecidea icmadophila (L. f.) Ach.; Patellaria aeruginosa (Scop.) Spreng.
Description: Thallus crustose, episubstratic, pale green, glaucous green or whitish grey, brighter green when wet, continuous, consisting of a soft layer of 100-300 µm thick, ecorticate, soredia-like to wart-like granules. Apothecia biatorine, round to irregular in outline, strongly constricted to substipitate, 1-2(-3.5) mm across, with a flesh-coloured to pale orange-pink, sometimes faintly white-pruinose, smooth to finally wrinkled, flat to convex disc, and a thin, smooth, sometimes irregularly lobulate, often paler, sometimes whitish-pruinose, finally often excluded proper margin. Proper exciple of intricately interwoven hyphae, extending below the hymenium; epithecium reddish brown, with many small crystals, K+ orange-red; hymenium colourless, 120-160 µm high, I+ blue; paraphyses simple or sparingly branched in upper part, slender, c. 1 μm thick at mid-level, the apical cells swollen, up to 5 μm wide; hypothecium colourless, the central part with colourless crystals not dissolving in K. Asci (6-)8-spored, narrowly cylindrical, K/I- except for a thin K/I+ dark blue cap in the apical wall, Icmadophila-type. Ascospores 1(-3)-septate, hyaline, fusiform-elongate, 12-28(-30) x 4-6(-7) μm. Pycnidia pale, immersed, with a colourless wall, the conidiogenous cells enteroblastic, short-cylindrical. Conidia simple, hyaline, bacilliform, 3.5-4.5 x 0.5-1 μm. Photobiont chlorococcoid (Coccomyxa), the cells ellipsoid, 5-8 x 3-4 µm, with a large parietal chloroplast, surrounded by a gelatinous layer. Spot tests: thallus K+ orange turning brownish orange, C-, KC+ orange, P+ orange, UV+ glaucous; apothecia K+ and P+ orange-red, UV-. Chemistry: thallus with thamnolic and perlatolic acid, apothecia with thamnolic acid only.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rather rare
Subalpine belt: rather common
Montane belt: rather common
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: 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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Rarity

absent
extremely rare
very rare
rare
rather rare
rather common
common
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extremely common
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Occurrence data
Predictive map
Model ImageCurrent prediction (1981-2010)
Model ImageFuture prediction (2071-2100) SSP 1-2.6
Model ImageFuture prediction (2071-2100) SSP 5-8.5
Predictive maps according to Francesconi et al. 2025

Author: Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9037)
2001/11/25


Andres Saag; Owner: University of Tartu


Gabriele Gheza, Tromello (PV); Owner: Gabriele Gheza, Tromello (PV)


Curtis Randall Björk, - CC BY-SA 4.0
British Columbia, Canada
13.11.2018


Pier Luigi Nimis - CC BY-SA 4.0
TSB 41549


Pier Luigi Nimis - CC BY-SA 4.0
TSB 41596


Pier Luigi Nimis - CC BY-SA 4.0
TSB 37387


P.L. Nimis CC BY-SA 04
TSB 37320


P.L. Nimis CC BY-SA 04
TSB 37320


P.L. Nimis CC BY-SA 04
TSB 44171


P.L. Nimis CC BY-SA 04
TSB 44171


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/


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/


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/


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/


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_I/Icmadophila_ericetorum.htm
France, Haute-Savoie 2010


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_I/Icmadophila_ericetorum.htm
France, Haute-Savoie 2010


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_I/Icmadophila_ericetorum.htm
France, Haute-Savoie 2010


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=596&lang=en
France, Jura


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Central Europe; Austria; Tirol: Alps. (Coll/ident. by M. Schessl).


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Sweden: Dalarna.


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Central Europe; Austria: Alps.


Felix Schumm - CC BY 4.0
[565], Österreich, Land Salzburg, Steir. Salzkammergut, Mitterndorf bei der Sonnenalm. Leg. D. & F. Schumm, 06.1967, det. F. Schumm.


Felix Schumm - CC BY 4.0
[565], Österreich, Land Salzburg, Steir. Salzkammergut, Mitterndorf bei der Sonnenalm. Leg. D. & F. Schumm, 06.1967, det. F. Schumm.


Felix Schumm - CC BY 4.0
[565], Österreich, Land Salzburg, Steir. Salzkammergut, Mitterndorf bei der Sonnenalm. Leg. D. & F. Schumm, 06.1967, det. F. Schumm.


Felix Schumm - CC BY 4.0
[565], Österreich, Land Salzburg, Steir. Salzkammergut, Mitterndorf bei der Sonnenalm. Leg. D. & F. Schumm, 06.1967, det. F. Schumm.


Felix Schumm - CC BY 4.0
[565], Österreich, Land Salzburg, Steir. Salzkammergut, Mitterndorf bei der Sonnenalm. Leg. D. & F. Schumm, 06.1967, det. F. Schumm.


Felix Schumm - CC BY 4.0
[565], Österreich, Land Salzburg, Steir. Salzkammergut, Mitterndorf bei der Sonnenalm. Leg. D. & F. Schumm, 06.1967, det. F. Schumm.


Felix Schumm - CC BY 4.0
[572], Österreich, Land Salzburg, Tennengebirge (bei Bischofshofen), Anton-Proksch-Haus bei Werfenweng, Ladenberghöhe, ca. 1630 m. Leg. F. Schumm 24.08.1967. det. F. Schumm, 1967.


Felix Schumm - CC BY 4.0
[572], Österreich, Land Salzburg, Tennengebirge (bei Bischofshofen), Anton-Proksch-Haus bei Werfenweng, Ladenberghöhe, ca. 1630 m. Leg. F. Schumm 24.08.1967. det. F. Schumm, 1967.


Felix Schumm - CC BY 4.0
[569], Italien, Südtirol, Vigo di Fassa, Vajolettal, bei der Cardeccia Hütte, 1949 m. Leg. F. Schumm, 06.1963, det. F. Schumm, 1999. - Sporen 2-4 zellig, hyalin, 20-26 x 4-8 μm.


Felix Schumm - CC BY 4.0
[569], Italien, Südtirol, Vigo di Fassa, Vajolettal, bei der Cardeccia Hütte, 1949 m. Leg. F. Schumm, 06.1963, det. F. Schumm, 1999. - Sporen 2-4 zellig, hyalin, 20-26 x 4-8 μm.


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, HIrschbichl


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, HIrschbichl


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, HIrschbichl


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Schachen


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Schachen


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Schachen


Wolfgang von Brackel - CC BY-4.0
Greenland, Tugtutoq


Wolfgang von Brackel - CC BY-4.0
Greenland, Tugtutoq


Wolfgang von Brackel - CC BY-4.0
Greenland, Tugtutoq


Felix Schumm - CC BY 4.0
[VZ1872], Suecia. Värmland: Rämen, ad septentriones a Stjärnberget, 360 m. Ad sphagna in turfoso. Leg. S. W. Sundell (no. 24223), 5.9.1980. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1872.


Felix Schumm - CC BY 4.0
[VZ1872], Suecia. Värmland: Rämen, ad septentriones a Stjärnberget, 360 m. Ad sphagna in turfoso. Leg. S. W. Sundell (no. 24223), 5.9.1980. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1872.


Frey E. 1933. Cladoniaceae (unter Ausschluß ded Gattung Cladonia) und Umbilicariaceae. In: Rabenhrst’s Kryptogamenflora von Deutschland, Österreich und der Schweiz. 15: 1-208.