Peltigera aphthosa (L.) Willd.
Fl. Berolin. Prodr.: 347, 1787. Basionym: Lichen aphthosus L. - Sp. Pl., 2: 1148, 1753.
Synonyms: Lichen verrucosus Weber; Peltidea aphthosa (L.) Ach.; Peltidea aphthosa var. verrucosa Ach.; Peltigera aphthosa var. microthallina Gyeln.; Peltigera aphthosa var. phymatodes Wallr.
Description: Thallus foliose, heteromerous and dorsiventral, broad-lobed, loosely attached, forming 15(-24) cm wide rosettes. Lobes elongate, concave, contiguous, 1.5-3(-5) cm broad, up to 12 cm long, usually obtuse to boat-shaped, with ascending, entire to crenate margins. Upper surface erect-tomentose in marginal parts, glabrous in central parts, grey to greenish-grey when dry, bright green when wet, smooth, with up to 2 mm wide, numerous, scattered, dark grey, flattened to wart-like cephalodia containing Nostoc. Lower surface tomentose, whitish in marginal parts, abruptly blackening in central parts, with a few, indistinct, broad veins or veinless, and with a few dark, simple to fasciculate, often confluent, up to 5 mm long rhizines. Upper cortex pseudoparenchymatous; medulla white; lower cortex absent. Apothecia rare, saddle-shaped, terminal, brown, with a continuous, smooth to warted cortex, 7-15 mm. Paraphyses simple, distinctly thickened in upper part. Asci 8-spored, fissitunicate, the thickened apex with a K/I+ blue ring, Peltigera-type. Ascospores 3-7-septate, hyaline to pale brown at maturity, acicular, thin-walled, (47-)53-67(-75) x 4-5 μm. Photobiont chlorococcoid (Coccomyxa), cephalodia with Nostoc. Spot tests: K-, C-, KC-, P-, UV-; or medulla faintly and fleeting C+ and KC+ pink. Chemistry: at least five chemotypes with different combinations of tenuiorin, methyl gyrophorate, gyrophoric acid and triterpenoids.
Growth form: Foliose, broad lobed
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia (primary); cyanobacteria, filamentous (e.g. Nostoc, Scytonema) (secundary, e.g. in cephalodia)
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rather rare
Subalpine belt: common
Montane belt: rather common
Dry submediterranean belt: absent
Humid submediterranean belt: absent
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
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
Andres Saag; Owner: University of Tartu
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (8707)
2001/12/05
lower surface
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21158)
2003/03/03
upper surface with cephalodia (wet)
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21158)
2003/03/03
cephalodium (wet)
Felix Schumm – CC BY-SA 4.0
[12666], Österreich, Gauertal, Lindauer Hütte, ca. 1900 m, Krummholz. Leg. et det. H. Muhle 09.2005.
Felix Schumm – CC BY-SA 4.0
[12666], Österreich, Gauertal, Lindauer Hütte, ca. 1900 m, Krummholz. Leg. et det. H. Muhle 09.2005.
Felix Schumm – CC BY-SA 4.0
[12666], Österreich, Gauertal, Lindauer Hütte, ca. 1900 m, Krummholz. Leg. et det. H. Muhle 09.2005.
Felix Schumm – CC BY-SA 4.0
[12666], Österreich, Gauertal, Lindauer Hütte, ca. 1900 m, Krummholz. Leg. et det. H. Muhle 09.2005.
HPTLC in den Laufmitteln A, B’ und C nach Säurebehandlung bei Tageslicht und 366 nm UV-Langwelle. 1: Start, 4: Position von Norstictinsäure, 7: Position von Atranorin, t: Tenuiorin, mg: Methylgyrophorat, ph: phlebic acid B.
Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005
Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_aphtosa.htm
France, 4/8/2010 - Champagny-le-Haut - Haute-Savoie
Felix Schumm - CC BY-SA 4.0
[1259], Österreich, Land Salzburg, Tennengebirge (bei Bischofshofen),
Anton-Proksch-Haus bei Werfenweng, Ladenberghöhe, ca. 1630 m.
Leg. et det. F. Schumm 24.08.1967. Chemistry (p411/2): tenuiorin,
methyl gyrophorate, hopane-15 ,22-diol.
Felix Schumm - CC BY-SA 4.0
[1259], Österreich, Land Salzburg, Tennengebirge (bei Bischofshofen),
Anton-Proksch-Haus bei Werfenweng, Ladenberghöhe, ca. 1630 m.
Leg. et det. F. Schumm 24.08.1967. Chemistry (p411/2): tenuiorin,
methyl gyrophorate, hopane-15 ,22-diol.
Felix Schumm - CC BY-SA 4.0
[4934], Schweiz, Wallis, Champex westl. Orsières, Val de Arpette,
Granituntergrund, ca. 1700 m, SVBL-Exkursion, 22.08.1996. Leg. et
det. F. Schumm, 08.1998. Chemistry (p411/4): tenuiorin, methyl gyrophorate,
hopane-15 ,22-diol.
Felix Schumm - CC BY-SA 4.0
[4934], Schweiz, Wallis, Champex westl. Orsières, Val de Arpette,
Granituntergrund, ca. 1700 m, SVBL-Exkursion, 22.08.1996. Leg. et
det. F. Schumm, 08.1998. Chemistry (p411/4): tenuiorin, methyl gyrophorate,
hopane-15 ,22-diol.
Wolfgang von Brackel - CC BY-4.0
Greenland, Blomsterdalen
Growth form: Foliose, broad lobed
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia (primary); cyanobacteria, filamentous (e.g. Nostoc, Scytonema) (secundary, e.g. in cephalodia)
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rather rare
Subalpine belt: common
Montane belt: rather common
Dry submediterranean belt: absent
Humid submediterranean belt: absent
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
Loading data...
Occurrence data
Predictive map
Current prediction (1981-2010)Future prediction (2071-2100) SSP 1-2.6Future prediction (2071-2100) SSP 5-8.5Predictive maps according to Francesconi et al. 2025
Andres Saag; Owner: University of Tartu
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (8707)
2001/12/05
lower surface
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21158)
2003/03/03
upper surface with cephalodia (wet)
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21158)
2003/03/03
cephalodium (wet)
Felix Schumm – CC BY-SA 4.0
[12666], Österreich, Gauertal, Lindauer Hütte, ca. 1900 m, Krummholz. Leg. et det. H. Muhle 09.2005.
Felix Schumm – CC BY-SA 4.0
[12666], Österreich, Gauertal, Lindauer Hütte, ca. 1900 m, Krummholz. Leg. et det. H. Muhle 09.2005.
Felix Schumm – CC BY-SA 4.0
[12666], Österreich, Gauertal, Lindauer Hütte, ca. 1900 m, Krummholz. Leg. et det. H. Muhle 09.2005.
Felix Schumm – CC BY-SA 4.0
[12666], Österreich, Gauertal, Lindauer Hütte, ca. 1900 m, Krummholz. Leg. et det. H. Muhle 09.2005.
HPTLC in den Laufmitteln A, B’ und C nach Säurebehandlung bei Tageslicht und 366 nm UV-Langwelle. 1: Start, 4: Position von Norstictinsäure, 7: Position von Atranorin, t: Tenuiorin, mg: Methylgyrophorat, ph: phlebic acid B.
Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005
Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Peltigera_aphtosa.htm
France, 4/8/2010 - Champagny-le-Haut - Haute-Savoie
Felix Schumm - CC BY-SA 4.0
[1259], Österreich, Land Salzburg, Tennengebirge (bei Bischofshofen), Anton-Proksch-Haus bei Werfenweng, Ladenberghöhe, ca. 1630 m. Leg. et det. F. Schumm 24.08.1967. Chemistry (p411/2): tenuiorin, methyl gyrophorate, hopane-15 ,22-diol.
Felix Schumm - CC BY-SA 4.0
[1259], Österreich, Land Salzburg, Tennengebirge (bei Bischofshofen), Anton-Proksch-Haus bei Werfenweng, Ladenberghöhe, ca. 1630 m. Leg. et det. F. Schumm 24.08.1967. Chemistry (p411/2): tenuiorin, methyl gyrophorate, hopane-15 ,22-diol.
Felix Schumm - CC BY-SA 4.0
[4934], Schweiz, Wallis, Champex westl. Orsières, Val de Arpette, Granituntergrund, ca. 1700 m, SVBL-Exkursion, 22.08.1996. Leg. et det. F. Schumm, 08.1998. Chemistry (p411/4): tenuiorin, methyl gyrophorate, hopane-15 ,22-diol.
Felix Schumm - CC BY-SA 4.0
[4934], Schweiz, Wallis, Champex westl. Orsières, Val de Arpette, Granituntergrund, ca. 1700 m, SVBL-Exkursion, 22.08.1996. Leg. et det. F. Schumm, 08.1998. Chemistry (p411/4): tenuiorin, methyl gyrophorate, hopane-15 ,22-diol.
