Parmeliopsis ambigua (Hoffm.) Nyl. | Dolichens

Parmeliopsis ambigua (Hoffm.) Nyl.

Syn. Meth. Lich., 2: 54, 1863. Basionym: Squamaria ambigua Hoffm. - Descr. Pl. Cl. Crypt., 2, 24: 56, 1794.

Synonyms: Foraminella ambigua (Hoffm.) S.L.F. Mey.; Imbricaria diffusa auct.; Parmelia ambigua (Hoffm.) Ach.; Parmelia diffusa auct. non (Hoffm.) Sandst.; Parmelia diffusa var. ochromatica Wallr.; Parmelia subsoredians Nyl.; Parmeliopsis diffusa auct.; Parmeliopsis subsoredians (Nyl.) Nyl.

Description: Thallus foliose, heteromerous, dorsiventral, very closely attached, forming orbicular, regular, up to 3(-6) cm wide rosettes that often coalesce to cover much wider surfaces. Lobes radiating, contiguous, flat, (0.3-)0.4-0.6(-1.3) mm wide, sublinear, irregularly dichotomously branched, greenish yellow, often pale brown at margins and lobe tips, dull in central parts, slightly shiny in apical parts, smooth, weakly maculate, with powdery, yellowish green soredia in well-delimited, circular, laminal soralia which sometimes coalesce into a continuous sorediate crust. Lower surface gradually darkening from a narrow, brown marginal zone to dark brown or black in the center, with sparse, usually simple rhizines. Upper cortex 10-20 µm thick, of tightly packed, anticlinally oriented hyphae, with a pored epicortex, the cell walls with isolichenan; medulla white; algal layer continuous; lower cortex of hyphae running parallel to the surface. Apothecia very rare, lecanorine, 1-2 mm across, with a brown disc and a sorediate thalline margin. Epithecium brown; hymenium and hypothecium colourless; paraphyses mostly simple. Asci 8-spored, clavate, Lecanora-type. Ascospores 1-celled. hyaline, ellipsoid, 6.5-11(-12) x (1.5-)2-3(-5) µm. Pycnidia rare, with richly branched, Psora-type conidiophores. Conidia thread-like, falcate, 12-18(-22) x 0.5-1 µm. Photobiont chlorococcoid. Spot tests: upper cortex K- or K+ (rarely) faintly yellow, C-, KC+ yellow, P-, UV-; medulla K-, KC-, C-, P-, UV+ white. Chemistry: upper cortex with usnic acid (major) and rarely atranorin (minor or trace); medulla with divaricatic acid (major) and nordivaricatic acid (minor).

Growth form: Foliose, narrow lobed

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: extremely rare

Subalpine belt: extremely common

Montane belt: rather rare

Dry submediterranean belt: extremely rare

Humid submediterranean belt: extremely 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

Antonio Valerio

Spain
2010

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

Herbarium: TSB (33030)
2001/12/10
soralia

Andres Saag; Owner: University of Tartu

Gabriele Gheza, Tromello (PV); Owner: Gabriele Gheza, Tromello (PV)

Antonio Valero; Owner: Antonio Valero

Spain
2010

Antonio Valero; Owner: Antonio Valero

Spain
2010

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

Italy, Friuli Venezia Giulia, Udine, Passo del Pura, Ampezzo Carnico, 1400 m
09.09.2016

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

Italy, Friuli Venezia Giulia, Udine, Passo del Pura, Ampezzo Carnico, 1400 m
09.09.2016

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

Herbarium: TSB (33030)
2001/12/10

Felix Schumm - CC BY-SA 4.0

[19110], Australia, Victoria, Pretty Valley, Alpine National Park, 18 km south-south-east of Mt. Beauty, 36°53' S, 147°14' E, 1600 m, growing on base of dead Eucalyptus in open Eucalyptus pauciflora woodland with large granite outcrops. Leg. J.A. Elix (40630) & H. Streimann 18.02.1994.

Felix Schumm - CC BY-SA 4.0

[19110], Australia, Victoria, Pretty Valley, Alpine National Park, 18 km south-south-east of Mt. Beauty, 36°53' S, 147°14' E, 1600 m, growing on base of dead Eucalyptus in open Eucalyptus pauciflora woodland with large granite outcrops. Leg. J.A. Elix (40630) & H. Streimann 18.02.1994.

Felix Schumm - CC BY-SA 4.0

[19110], Australia, Victoria, Pretty Valley, Alpine National Park, 18 km south-south-east of Mt. Beauty, 36°53' S, 147°14' E, 1600 m, growing on base of dead Eucalyptus in open Eucalyptus pauciflora woodland with large granite outcrops. Leg. J.A. Elix (40630) & H. Streimann 18.02.1994.

Felix Schumm - CC BY-SA 4.0

[19110], Australia, Victoria, Pretty Valley, Alpine National Park, 18 km south-south-east of Mt. Beauty, 36°53' S, 147°14' E, 1600 m, growing on base of dead Eucalyptus in open Eucalyptus pauciflora woodland with large granite outcrops. Leg. J.A. Elix (40630) & H. Streimann 18.02.1994.
us: usnic acid, div:divaricatic acid, nd: nordivaricatic acid

Antonio Valero; Owner: Antonio Valero

Spain
2010

P. L. Nimis - CC BY-SA 4.0

TSB 37197

P. L. Nimis - CC BY-SA 4.0

TSB 42477

Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/

with P. hyperopta (left)

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/

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/

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Corse, Soccia

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Corse, Soccia

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Corse, Soccia

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Corse, Soccia

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Mercantour

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Tarentaise

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Tarentaise

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Tarentaise

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Tarentaise

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Tarentaise

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Tarentaise

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=746&lang=en

France, Tarentaise

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

Central Europe.

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

Central Europe.

Marko Doboš

Kamenski Vučjak, Croatia

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, Kösseine

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, Kürnacher Wald Oberallgäu

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, Kürnacher Wald Oberallgäu

Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC

Italy, Veneto, (in frutto rarissima) L. in Al. Cadubriae
as Parmelia ambigua

Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC

Italy, Veneto, (in frutto rarissima) L. in Al. Cadubriae
as Parmelia ambigua

Bologna

Biome

Pon

Trieste

Trieste

Paneveggio

Pnab

Pndb