Varicellaria lactea (L.) I. Schmitt & Lumbsch
in Schmitt & al., MycoKeys, 4: 31, 2012. Basionym: Lichen lacteus L. - Mantissa Pl., 1: 132, 1767.
Synonyms: Lecanora pallescens var. variolosa sensu Anzi non Jatta; Lecanora rimosa var. sorediifera (Schaer.) Rabenh.; Ochrolechia lactea (L.) Matzer & Hafellner; Pertusaria lactea (L.) Arnold; Pertusaria lactea f. cinerascens Nyl.; Pertusaria lactea var. confluens Erichsen; Variolaria lactea (L.) Pers.
Description: Thallus crustose, episubstratic, greyish-white to white, smooth to minutely warted in central parts, often radially folded, continuous to rimose, often delimited by a white, somehow glossy, more or less distinctly zoned prothallus, forming large, up to 20(-35) cm wide patches. Soralia at first orbicular, later often confluent, 0.5-1.5(-3) mm wide, convex when young, becoming more flattened with age, white (paler than thallus), when young often surrounded by a thin thalline rim; initially with club-shaped to globose, up to 0.4(-1) mm tall and 0.3(-0.9) mm wide outgrowths resembling isidia, which break up into 110-180 μm wide soredia that are often aggregated into rounded, up to 450 μm wide consoredia. Apothecia very rare, immersed in 0.4-0.8 mm wide, soralia-like thalline warts, 1-2 per wart, with a pale brown, but heavily white-pruinose disc, and a more or less densely sorediate thalline margin. Asci 1-spored, broadly cylindrical, the apex with a broad ocular chamber, the outer sheath K/I+ blue, otherwise K/I-, Pertusaria-type. Ascospores 1-celled, hyaline, ellipsoid, 180-240 x 60-100 µm, the wall not striate, 8-10(-30) µm thick. Photobiont chlorococcoid. Spot tests: cortex K-, C+ and KC+ red (reactions often weak), P-, UV+ faintly blue; medulla and soralia C+ bright carmine red. Chemistry: lecanoric acid (major) and variolaric acid.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: extremely rare
Montane belt: rather rare
Dry submediterranean belt: extremely 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
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
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (25156)
2001/12/10

Felix Schumm - CC BY-SA 4.0
[1335], Österreich, Steiermark, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte, auf dem Kamm bei der Morsbachspitze, ca. 1900 m. Leg. et det. Erich Putzler, 19.08.1954.

Felix Schumm - CC BY-SA 4.0
[1335], Österreich, Steiermark, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte, auf dem Kamm bei der Morsbachspitze, ca. 1900 m. Leg. et det. Erich Putzler, 19.08.1954.

Felix Schumm - CC BY-SA 4.0
[1335], Österreich, Steiermark, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte, auf dem Kamm bei der Morsbachspitze, ca. 1900 m. Leg. et det. Erich Putzler, 19.08.1954.
1: lecanoric acid, 2: variolaric acid, conf. J.A.Elix

Felix Schumm - CC BY-SA 4.0
[1948], Germany, Baden-Württemberg, Südschwarzwald, Südseite des Belchen an Granitfelsen, ca. 1300 m, TK 8112. Leg. Schumm 10.09.1971, det. V. Wirth.

Felix Schumm - CC BY-SA 4.0
[1948], Germany, Baden-Württemberg, Südschwarzwald, Südseite des Belchen an Granitfelsen, ca. 1300 m, TK 8112. Leg. Schumm 10.09.1971, det. V. Wirth.

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_V/Varicellaria_lactea.htm
France, session AFL 2013 dans le Forez

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Pyrenees, Azet

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Pyrenees, Azet

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Pyrenees, Azet

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Pyrenees, Azet

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Hôpital-Camfrout

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Hôpital-Camfrout

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Hôpital-Camfrout

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Le Loc'h

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Le Loc'h

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Le Loc'h

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Central Europe; Germany; Baden-Württemberg: Black Forest.

Felix Schumm - CC BY-SA 4.0
[19824], Österreich, Land Salzburg, Hohe Tauern, Kapruner Tal,
Schmiedingerkees oberhalb der Krefelder Hütte, an Kalkschiefer, 2700
m. Leg. et det. K. Kalb, 6.-7.9.1973. - Thallus K+ gelb>rot, C+ rot,
KC+ rot, Pö.

Felix Schumm - CC BY-SA 4.0
[19824], Österreich, Land Salzburg, Hohe Tauern, Kapruner Tal,
Schmiedingerkees oberhalb der Krefelder Hütte, an Kalkschiefer, 2700
m. Leg. et det. K. Kalb, 6.-7.9.1973. - Thallus K+ gelb>rot, C+ rot,
KC+ rot, Pö.

Felix Schumm - CC BY-SA 4.0
[20883], Austria, Steiermark, Eastern Alps, Koralpe. 15.2 km W of the
centre of Deutschlandsberg, 400 m, S of the pass Weinebene, Weinhofen,
46°50'10'' N, 15°01'00'' E, 1720 m, low outcrops and boulders of a
brittle, siliceous schist (at the current timber line), on inclined rock
faces. Leg. et. det. J. Hafellner, 15.09.2007 (70356). EX W. OBERMAYER:
LICHENOTHECA GRAECENSIS, NR. 500. Distributed as Varicellaroa
lactea (L.) I. Schmitt & Lumbsch.

Felix Schumm - CC BY-SA 4.0
[20883], Austria, Steiermark, Eastern Alps, Koralpe. 15.2 km W of the
centre of Deutschlandsberg, 400 m, S of the pass Weinebene, Weinhofen,
46°50'10'' N, 15°01'00'' E, 1720 m, low outcrops and boulders of a
brittle, siliceous schist (at the current timber line), on inclined rock
faces. Leg. et. det. J. Hafellner, 15.09.2007 (70356). EX W. OBERMAYER:
LICHENOTHECA GRAECENSIS, NR. 500. Distributed as Varicellaroa
lactea (L.) I. Schmitt & Lumbsch.

Source: Schmitt I, Otte J, Parnmen S, Sadowska-Deś A, Luecking R, Lumbsch T (2012) A new circumscription of the genus Varicellaria (Pertusariales, Ascomycota). MycoKeys 4: 23-36. - CC BY-4.0
Spain, Schmitt 5.6.2003 (FR)
Scale bar: 1mm. Images were taken with an Olympus SC30 camera under an Olympus SZX7 stereomicroscope.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: extremely rare
Montane belt: rather rare
Dry submediterranean belt: extremely 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
Loading data...
Occurrence data
Predictive map



Predictive maps according to Francesconi et al. 2025

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (25156)
2001/12/10

Felix Schumm - CC BY-SA 4.0
[1335], Österreich, Steiermark, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte, auf dem Kamm bei der Morsbachspitze, ca. 1900 m. Leg. et det. Erich Putzler, 19.08.1954.

Felix Schumm - CC BY-SA 4.0
[1335], Österreich, Steiermark, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte, auf dem Kamm bei der Morsbachspitze, ca. 1900 m. Leg. et det. Erich Putzler, 19.08.1954.

Felix Schumm - CC BY-SA 4.0
[1335], Österreich, Steiermark, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte, auf dem Kamm bei der Morsbachspitze, ca. 1900 m. Leg. et det. Erich Putzler, 19.08.1954.
1: lecanoric acid, 2: variolaric acid, conf. J.A.Elix

Felix Schumm - CC BY-SA 4.0
[1948], Germany, Baden-Württemberg, Südschwarzwald, Südseite des Belchen an Granitfelsen, ca. 1300 m, TK 8112. Leg. Schumm 10.09.1971, det. V. Wirth.

Felix Schumm - CC BY-SA 4.0
[1948], Germany, Baden-Württemberg, Südschwarzwald, Südseite des Belchen an Granitfelsen, ca. 1300 m, TK 8112. Leg. Schumm 10.09.1971, det. V. Wirth.

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_V/Varicellaria_lactea.htm
France, session AFL 2013 dans le Forez

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Pyrenees, Azet

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Pyrenees, Azet

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Pyrenees, Azet

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Pyrenees, Azet

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Hôpital-Camfrout

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Hôpital-Camfrout

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Hôpital-Camfrout

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Le Loc'h

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Le Loc'h

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=278&lang=en
France, Le Loc'h

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Central Europe; Germany; Baden-Württemberg: Black Forest.

Felix Schumm - CC BY-SA 4.0
[19824], Österreich, Land Salzburg, Hohe Tauern, Kapruner Tal, Schmiedingerkees oberhalb der Krefelder Hütte, an Kalkschiefer, 2700 m. Leg. et det. K. Kalb, 6.-7.9.1973. - Thallus K+ gelb>rot, C+ rot, KC+ rot, Pö.

Felix Schumm - CC BY-SA 4.0
[19824], Österreich, Land Salzburg, Hohe Tauern, Kapruner Tal, Schmiedingerkees oberhalb der Krefelder Hütte, an Kalkschiefer, 2700 m. Leg. et det. K. Kalb, 6.-7.9.1973. - Thallus K+ gelb>rot, C+ rot, KC+ rot, Pö.

Felix Schumm - CC BY-SA 4.0
[20883], Austria, Steiermark, Eastern Alps, Koralpe. 15.2 km W of the centre of Deutschlandsberg, 400 m, S of the pass Weinebene, Weinhofen, 46°50'10'' N, 15°01'00'' E, 1720 m, low outcrops and boulders of a brittle, siliceous schist (at the current timber line), on inclined rock faces. Leg. et. det. J. Hafellner, 15.09.2007 (70356). EX W. OBERMAYER: LICHENOTHECA GRAECENSIS, NR. 500. Distributed as Varicellaroa lactea (L.) I. Schmitt & Lumbsch.

Felix Schumm - CC BY-SA 4.0
[20883], Austria, Steiermark, Eastern Alps, Koralpe. 15.2 km W of the centre of Deutschlandsberg, 400 m, S of the pass Weinebene, Weinhofen, 46°50'10'' N, 15°01'00'' E, 1720 m, low outcrops and boulders of a brittle, siliceous schist (at the current timber line), on inclined rock faces. Leg. et. det. J. Hafellner, 15.09.2007 (70356). EX W. OBERMAYER: LICHENOTHECA GRAECENSIS, NR. 500. Distributed as Varicellaroa lactea (L.) I. Schmitt & Lumbsch.
