Umbilicaria deusta (L.) Baumg.

Fl. Lips.: 571, 1790. Basionym: Lichen deustus L. - Sp. Pl., 2: 1150, 1753.
Synonyms: Gyrophora aenea var. flocculosa (Wulfen) Schaer.; Gyrophora deusta (L.) Ach.; Gyrophora flocculosa (Wulfen) Turner & Borrer; Gyrophora polyphylla var. deusta (L.) Rabenh.; Umbilicaria flocculosa (Wulfen) Hoffm.
Description: Thallus foliose-umbilicate, heteromerous, dorsiventral, monophyllous in very young specimens, otherwise polyphyllous, 0.1-0.2(-0.3) mm thick, fragile when dry, somewhat gelatinous when wet, 2-4(-8) cm wide, attached by a central holdfast, often forming large swards, the edges ondulate, often down-turned when dry. Young specimens (those up to 0.7 cm wide) monophyllous, orbicular in outline, shell- or ear-shaped; old specimens polyphyllous, irregular in outline, the lobes elongated, with often perforated margins. Upper surface dark brown to brownish black, dull or partly shiny, smooth, even or slightly wrinkled, usually with abundant, at first granulose, then cylindrical, simple or branched, sometimes flattened isidia arranged in punctiform clusters or irregularly spreading along cracks and abrasions. Lower surface brown, sometimes black in central parts, smooth to minutely areolate, pitted, erhizinate, without thalloconidia. Upper cortex c. 10 µm thick; medulla white, loose; lower cortex scleroplectenchymatous, c. 20 µm thick. Apothecia very rare, black gyrodisc, to 1.5 mm across. Epithecium brown, hymenium colourless, 75-95 µm high, paraphyses septate, 2-2.5 µm thick; hypothecium pale brown. Asci 8-spored, clavate, thick-walled, with an amyloid apical dome, Umbilicaria-type. Ascospores 1-celled hyaline, ellipsoid, (15-)18-27 x 7-12 µm. Photobiont chlorococcoid. Spot tests: medulla K-, C+ red, KC+ red, P-. Chemistry: medulla with gyrophoric acid and small amounts of lecanoric and hiascic acids.
Growth form: Foliose, umbilicate
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)

Commonnes-rarity: (info)

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

pH of the substrata:

12345
info

Solar irradiation:

12345
info

Aridity:

12345
info

Eutrophication:

12345
info

Poleotolerance:

0123
info

Altitudinal distribution:

123456
info

Rarity

absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
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

Giovanna Potenza
Italy, Basilicata, M. Volturino


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35205)
2002/07/09
isidia


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5678)
2001/12/05
detail of thallus center


Andres Saag; Owner: University of Tartu


Giancarlo Medici; Owner: Giancarlo Medici
Italy, Trentino-Alto Adige, Bolzano, Sesto, M. Elmo; altitude: 1600-1880 m
2010


Giancarlo Medici; Owner: Giancarlo Medici
Italy, Trentino-Alto Adige, Bolzano, Sesto, M. Elmo; altitude: 1600-1880 m
2010


Felix Schumm – CC BY-SA 4.0
[16531], Österreich, nordöstlich von Ischgl beim Silvretta Stausee, ca. 2000 m. Leg. A. Matuschewski 07.2010, det. Schumm 07.2010.


Felix Schumm – CC BY-SA 4.0
[16531], Österreich, nordöstlich von Ischgl beim Silvretta Stausee, ca. 2000 m. Leg. A. Matuschewski 07.2010, det. Schumm 07.2010.


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


Mark Rahill - CC BY-SA 4.0
USA


P.L. Nimis CC BY-SA 04
TSB 41007


P.L. Nimis CC BY-SA 04
TSB 41007


Giovanna Potenza
Italy, Basilicata, M. Volturino


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_U/Umbilicaria_deusta.htm
France, session AFL 2007 - Ardèche


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_U/Umbilicaria_deusta.htm
France, session AFL 2007 - Ardèche


Ulrich Kirschbaum
Sweden: Dalarna.


Felix Schumm - CC BY 4.0
[1535], Österreich, Großglockner Hochalpenstraße, auf Silikatgestein, ca. 1800 m. Leg. F. Schumm, 05.08.1969, det. F. Schumm, 1969.


Felix Schumm - CC BY 4.0
[1535], Österreich, Großglockner Hochalpenstraße, auf Silikatgestein, ca. 1800 m. Leg. F. Schumm, 05.08.1969, det. F. Schumm, 1969.


Felix Schumm - CC BY 4.0
[2054], Finnland, Tavastia australis: Loppi, Salo, Sorsama S-; on stone on the shore of Sorsamo-Lake. Leg. Pentti Alanko, 12.09.1970 (Nr. 16,270), det. P. Alanko. Ex Plantae Fennicae.


Felix Schumm - CC BY 4.0
[2054], Finnland, Tavastia australis: Loppi, Salo, Sorsama S-; on stone on the shore of Sorsamo-Lake. Leg. Pentti Alanko, 12.09.1970 (Nr. 16,270), det. P. Alanko. Ex Plantae Fennicae.


Felix Schumm - CC BY 4.0
[2054], Finnland, Tavastia australis: Loppi, Salo, Sorsama S-; on stone on the shore of Sorsamo-Lake. Leg. Pentti Alanko, 12.09.1970 (Nr. 16,270), det. P. Alanko. Ex Plantae Fennicae.


Felix Schumm - CC BY 4.0
[2054], Finnland, Tavastia australis: Loppi, Salo, Sorsama S-; on stone on the shore of Sorsamo-Lake. Leg. Pentti Alanko, 12.09.1970 (Nr. 16,270), det. P. Alanko. Ex Plantae Fennicae.


Felix Schumm - CC BY 4.0
[4903], Schweiz, Wallis, Champex westl. Orsières, Val de Arpette, Granituntergrund, ca. 1700 m, Leg. F. Schum (SVBL-Exkursion), 22.08.1996, det. F. Schumm, 1998.


Felix Schumm - CC BY 4.0
[4903], Schweiz, Wallis, Champex westl. Orsières, Val de Arpette, Granituntergrund, ca. 1700 m, Leg. F. Schum (SVBL-Exkursion), 22.08.1996, det. F. Schumm, 1998.


Felix Schumm - CC BY 4.0
[4903], Schweiz, Wallis, Champex westl. Orsières, Val de Arpette, Granituntergrund, ca. 1700 m, Leg. F. Schum (SVBL-Exkursion), 22.08.1996, det. F. Schumm, 1998.


Felix Schumm - CC BY 4.0
[20661], Österreich, Lungau, Karneralm, 47°29’89’’ N, 13°47’22.02’’ E, 1900 m, auf Silikatblock. Leg. F. Schumm & U. Schwarz, 2.9.2019.


Felix Schumm - CC BY 4.0
[20661], Österreich, Lungau, Karneralm, 47°29’89’’ N, 13°47’22.02’’ E, 1900 m, auf Silikatblock. Leg. F. Schumm & U. Schwarz, 2.9.2019.


Felix Schumm - CC BY 4.0
[20661], Österreich, Lungau, Karneralm, 47°29’89’’ N, 13°47’22.02’’ E, 1900 m, auf Silikatblock. Leg. F. Schumm & U. Schwarz, 2.9.2019.


Felix Schumm - CC BY 4.0
[20663], Österreich, Lungau, S-Seite des Großecks oberhalb Mauterndorf in Richtung Speiereckhütte, 47,12846° N, 13,64913° E bis 47,13086° N, 13,64336° E, 1968 m-2074 m, an Silikatfelsen. Leg. F. Schumm & U. Schwarz, 31.8.2019, det. F. Schumm - Th. oberseits mit feinen Isidien.


Felix Schumm - CC BY 4.0
[20663], Österreich, Lungau, S-Seite des Großecks oberhalb Mauterndorf in Richtung Speiereckhütte, 47,12846° N, 13,64913° E bis 47,13086° N, 13,64336° E, 1968 m-2074 m, an Silikatfelsen. Leg. F. Schumm & U. Schwarz, 31.8.2019, det. F. Schumm - Th. oberseits mit feinen Isidien.


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


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


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


Wolfgang von Brackel - CC BY-4.0
Greenland, Qanassiassat


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Kleiner Osser


Triin Aimla; Owner: University of Tartu


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


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