Physconia grisea (Lam.) Poelt subsp. grisea
Nova Hedwigia, 9: 30, 1965. Basionym: Lichen griseus Lam. - Encycl. Meth. Bot., 3: 480, 1789.
Synonyms: Hagenia pulverulenta var. pityrea (Ach.) Bagl. & Carestia; Parmelia farrea Ach. non auct. p.p.; Parmelia pityrea (Ach.) Ach.; Physcia grisea (Lam.) Zahlbr.; Physcia grisea var. hillmannii (Lynge) Nádv.; Physcia grisea var. pityrea (Ach.) Flagey; Physcia pityrea (Ach.) Nyl.; Physconia farrea (Ach.) Poelt non sensu Poelt; Poeltonia grisea (Lam.) S.Y. Kondr., Lőkös & Hur
Description: Thallus foliose, heteromerous, dorsiventral, narrow-lobed, forming regular to irregular up to 5(-8) cm wide rosettes. Lobes (1-)2-3 mm wide, slightly broader at tips, radiating and partly overlapping, with a coarse white pruina at least in apical parts, flat to irregularly concave, grey-brown to brown, with primarily marginal, elongate soralia tending to become laminal in older parts, the soredia coarsely granular to almost isidioid. Lower surface whitish in marginal parts, pale brown in central parts, with mostly simple, whitish to pale brown rhizines. Upper cortex paraplectenchymatous; medulla white; lower cortex prosoplectenchymatous, with hyphae oriented parallel to the long axis of lobes. Apothecia rare, lecanorine, 1-3 mm across, with a pruinose disc and a sorediate thalline margin. Epithecium brown; hymenium and hypothecium colourless; paraphyses slender, simple or forked in upper part, the apical cells clavate, with a thin, dark brown cap. Asci 8-spored, clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, brown, ellipsoid, (22-)25-32(-34) x (12-)14-17(-19) µm, thickened at septum but not at apices, Physconia-type. Pycnidia frequent, immersed, inconspicuous. Conidia 4-7 x 1-2 µm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-. Chemistry: medulla with four unidentified lichen substances.
Growth form: Foliose, narrow lobed
Substrata: bark and 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: very rare
Dry submediterranean belt: very common
Humid submediterranean belt: very common
Padanian area: rather rare
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
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 (20462)
2001/12/05
detail of soredia

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20462)
2001/12/05

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (10537)
2002/11/04

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli-Venezia Giulia, TS, Basovizza; altitude: 2
2008.02.21
with (in upper part of picture) Physconia distorta

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino (Rupingrande)
07.07.2016

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino (Rupingrande)
07.07.2016

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste, Opicina, Viale alberato sulla strada per Monrupino
17/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste, Opicina, Viale alberato sulla strada per Monrupino
17/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste, Opicina, Viale alberato sulla strada per Monrupino
17/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste, Opicina, Viale alberato sulla strada per Monrupino
17/02/2017

Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste, Opicina, Viale alberato sulla strada per Monrupino
17/02/2017

Felix Schumm – CC BY-SA 4.0
[10668], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Heidenheim, im Stubental ca. 5 km westlich von Sontheim, Straßenallee, ca.570 m, an Tilia. Leg et det. F. Schumm, 19.06.2003

Felix Schumm – CC BY-SA 4.0
[10668], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Heidenheim, im Stubental ca. 5 km westlich von Sontheim, Straßenallee, ca.570 m, an Tilia. Leg et det. F. Schumm, 19.06.2003

Felix Schumm – CC BY-SA 4.0
[10668], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Heidenheim, im Stubental ca. 5 km westlich von Sontheim, Straßenallee, ca.570 m, an Tilia. Leg et det. F. Schumm, 19.06.2003

Felix Schumm – CC BY-SA 4.0
[10668], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Heidenheim, im Stubental ca. 5 km westlich von Sontheim, Straßenallee, ca.570 m, an Tilia. Leg et det. F. Schumm, 19.06.2003

Felix Schumm – CC BY-SA 4.0
[10668], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Heidenheim, im Stubental ca. 5 km westlich von Sontheim, Straßenallee, ca.570 m, an Tilia. Leg et det. F. Schumm, 19.06.2003

Felix Schumm – CC BY-SA 4.0
[10668], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Heidenheim, im Stubental ca. 5 km westlich von Sontheim, Straßenallee, ca.570 m, an Tilia. Leg et det. F. Schumm, 19.06.2003

Felix Schumm – CC BY-SA 4.0
[10668], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Heidenheim, im Stubental ca. 5 km westlich von Sontheim, Straßenallee, ca.570 m, an Tilia. Leg et det. F. Schumm, 19.06.2003

Felix Schumm – CC BY-SA 4.0
[10668], Germany, Baden-Württemberg, Schwäbische Alb, Kreis Heidenheim, im Stubental ca. 5 km westlich von Sontheim, Straßenallee, ca.570 m, an Tilia. Leg et det. F. Schumm, 19.06.2003

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Physconia_grisea.htm
France, 19/3/2013 - sur Acer - Mont Dore - Puy-de-Dôme

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Physconia_grisea.htm
France, 19/3/2013 - sur Acer - Mont Dore - Puy-de-Dôme

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Physconia_grisea.htm
France, 19/3/2013 - sur Acer - Mont Dore - Puy-de-Dôme

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Physconia_grisea.htm
France, 19/3/2013 - sur Acer - Mont Dore - Puy-de-Dôme

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1450&lang=en
France, Noirmoutier

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1450&lang=en
France, Noirmoutier

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1450&lang=en
France, Noirmoutier

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1450&lang=en
France, Noirmoutier

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1450&lang=en
France, Noirmoutier

Bernard Bouffinier - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=2881
France, Quimper

Bernard Bouffinier - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=2881
France, Quimper

Bernard Bouffinier - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=2881
France, Quimper

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=2881
Belgium, Han sur Lesse

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Central Europe
Growth form: Foliose, narrow lobed
Substrata: bark and 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: very rare
Dry submediterranean belt: very common
Humid submediterranean belt: very common
Padanian area: rather rare
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

