Peltigera rufescens (Weiss) Humb. | Dolichens

Peltigera rufescens (Weiss) Humb.

Fl. Friberg.: 2, 1793. Basionym: Lichen caninus var. rufescens Weiss - Pl. Crypt. Fl. Goett.: 79, 1770.

Synonyms: Lichen rufescens (Weiss) Neck.; Peltidea canina var. crispa Ach.; Peltidea canina var. inflexa Ach.; Peltidea ulorrhiza Flörke; Peltigera canina var. inflexa (Ach.) Delise; Peltigera canina var. palmata Delise in Duby; Peltigera canina var. phaeorrhiza Wallr.; Peltigera canina var. rufescens (Weiss) Mudd; Peltigera rufescens f. albidula Gyeln.; Peltigera rufescens f. complicata Gyeln.; Peltigera rufescens f. incusa Flot.; Peltigera rufescens var. gotthardiana Gyeln.; Peltigera rufescens var. palmata (Delise) Gyeln.; Peltigera spuria var. calcicola Räsänen

Description: Thallus foliose, heteromerous and dorsiventral, dull brownish to whitish-grey-pruinose when dry, blackish green when wet, loosely attached, forming 5-10(-15) cm wide rosettes. Lobes 5-10 mm broad and up to 4 cm long, elongate, concave to flattened, contiguous, the upper surface thickly arachnoid-tomentose especially along margins, which are ascending, crisped, sometimes with adventitious lobules. Lower surface whitish, with raised, dark veins and c. 5 mm long, dark, squarrose-fasciculate rhizines. Upper cortex pseudoparenchymatous; medulla white; lower cortex absent. Apothecia saddle-shaped, on upper surface of the recurved lobe tips, brown, up to 5 mm. Paraphyses simple, distinctly thickened above. Asci 8-spored, Peltigera-type, fissitunicate, the thickened apex with a K/I+ blue ring. Ascospores 3-5(-6) septate, hyaline to very pale brown at maturity, acicular, thin-walled, (36-)50-65(-75) x 2.5-5.2 µm. Pycnidia dark, immersed. Conidia fusiform, 7-10 x 2.5-4.5 µm. Photobiont cyanobacterial (Nostoc, the cells not in long chains). Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Growth form: Foliose, broad lobed

Substrata: soil, terricolous mosses, and plant debris

Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: common

Subalpine belt: extremely common

Montane belt: rather common

Dry submediterranean belt: very rare

Humid submediterranean belt: very rare

Padanian area: absent

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

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Occurrence data

Predictive map

Model Image

Current prediction (1981-2010)

Model Image

Future prediction (2071-2100) SSP 1-2.6

Model Image

Future prediction (2071-2100) SSP 5-8.5

Predictive maps according to Francesconi et al. 2025

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

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (2455)
2001/12/05

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (8695)
2003/03/03

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (8695)
2003/03/03
detail of lower surface

Andres Saag; Owner: University of Tartu

Felix Schumm – CC BY-SA 4.0

[5537], Germany, Baden-Württemberg, Zollernalbkreis, Lochenstein südlich von Balingen, 48°13,048’ N, 8°51,075’ E, 964 m, zwischen Moosen über Weißjura-Kalkblöcken. Leg. et det. Schumm 25.04.1999, test. Vitikainen 1999

Felix Schumm – CC BY-SA 4.0

[5537], Germany, Baden-Württemberg, Zollernalbkreis, Lochenstein südlich von Balingen, 48°13,048’ N, 8°51,075’ E, 964 m, zwischen Moosen über Weißjura-Kalkblöcken. Leg. et det. Schumm 25.04.1999, test. Vitikainen 1999

Felix Schumm – CC BY-SA 4.0

[5537], Germany, Baden-Württemberg, Zollernalbkreis, Lochenstein südlich von Balingen, 48°13,048’ N, 8°51,075’ E, 964 m, zwischen Moosen über Weißjura-Kalkblöcken. Leg. et det. Schumm 25.04.1999, test. Vitikainen 1999

Felix Schumm – CC BY-SA 4.0

[5537], Germany, Baden-Württemberg, Zollernalbkreis, Lochenstein südlich von Balingen, 48°13,048’ N, 8°51,075’ E, 964 m, zwischen Moosen über Weißjura-Kalkblöcken. Leg. et det. Schumm 25.04.1999, test. Vitikainen 1999

Felix Schumm – CC BY-SA 4.0

[5537], Germany, Baden-Württemberg, Zollernalbkreis, Lochenstein südlich von Balingen, 48°13,048’ N, 8°51,075’ E, 964 m, zwischen Moosen über Weißjura-Kalkblöcken. Leg. et det. Schumm 25.04.1999, test. Vitikainen 1999

Felix Schumm – CC BY-SA 4.0

[5537], Germany, Baden-Württemberg, Zollernalbkreis, Lochenstein südlich von Balingen, 48°13,048’ N, 8°51,075’ E, 964 m, zwischen Moosen über Weißjura-Kalkblöcken. Leg. et det. Schumm 25.04.1999, test. Vitikainen 1999

Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste

Italy, Trentino-Alto Adige, Trento, Monte Bondone
2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Peltigera_rufescens.htm

France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Peltigera_rufescens.htm

France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Peltigera_rufescens.htm

France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Peltigera_rufescens.htm

France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Peltigera_rufescens.htm

France, 14/9/2015 - Flaines, les grandes platières - Haute-Savoie

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Guidel

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Guidel

Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Guidel

Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Ploudalmézeau

Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Guidel

Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Guidel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=211&lang=en

France, Ardennes

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

Central Europe: Germany.

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

Central Europe: Germany.

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

Central Europe; Germany: Hesse.

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

Central Europe; Germany: Hesse.

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

Central Europe; Germany: Hesse.

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, München

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, Garchinger Haide

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, Nordheimer Gipshügel

Bologna

Biome

Pon

Trieste

Trieste

Paneveggio

Pnab

Pndb