Acarospora privigna (Ach.) A. Schneid.

Acarospora privigna (Ach.) A. Schneid.

Guide Study Lich.: 152, 1898. Basionym: Lecidea privigna Ach. - Meth. Lich. Sect. prior: 49, 1803

Synonyms: Acarospora simplex (Taylor) Jatta; Bacidia simplex (Taylor) Branth & Rostr.; Polysporina simplex (Taylor) Vězda; Sarcogyne privigna (Ach.) A. Massal. non auct.; Sarcogyne regularis var. decipiens (A. Massal.) N.S. Golubk. nomen sed non planta?; Sarcogyne simplex (Taylor) Nyl.; Sarcogyne simplex var. minor B. de Lesd.?; Sarcogyne simplex var. strepsodina (Ach.) Stein

Distribution: N - VG (Castello 2002, Martellos & Castello 2004), Frl (Tretiach & Hafellner 2000), Ven (Lazzarin 2000b), TAA (Thor & Nascimbene 2007, Isocrono & al. 2008, Lang 2009, Nascimbene & al. 2022), Lomb, Piem (Isocrono & al. 2004, Favero-Longo & al. 2004, 2006b, 2015, 2015b, Isocrono & Piervittori 2008), VA (Piervittori & Isocrono 1999, Favero-Longo & Piervittori 2009, Matteucci & al. 2015c), Emil (Fariselli & al. 2020), Lig (Giordani & al. 2016). C - Tosc (Brackel 2015), Laz, Abr, Sar (Nöske 2000, Neuwirth 2018). S - Camp (Nimis & Tretiach 2004), Bas (Nimis & Tretiach 1999), Cal (Puntillo 1996, Puntillo & Puntillo 2004), Si (Nimis & al. 1996b, Iacolino & Ottonello 2006).

Description: Thallus crustose, usually endolithic and not apparent, sometimes visible as a thin, pale grey to olive-brown film around the apothecia, the Photobiont cells usually scattered in the substratum or clustered below the apothecia, Apothecia lecideine, more or less immersed to sessile, often deformed by mutual compression, 0.3-0.8(-1) mm across, scattered or clustered, but most often arranged in lines along rock crevices, with a black to brown-black, round, flat to slightly concave, non-gyrose disc, and a concolorous, crenulate, split margin extending to disc and sometimes giving it an umbonate appearance. Proper exciple carbonized in outer part, yellowish to colourless within, 35-55 µm wide laterally; epithecium blackened, with reddish areas between the carbonized, to 50 µm tall accretions; hymenium colourless, (60-)90-130(-180) μm high, often divided by sterile columns of conglutinated hyphae, the hymenial gel hemiamyloid, I+ light blue fading to light red; paraphyses coherent, richly branched, 1-1.5(-2) µm thick at base, hardly expanded at apex; hypothecium colourless. Asci >200-spored, clavate to subcylindrical, strongly thickened at apex, the apical dome K/I-, the outer coat K/I+ blue. Ascospores 1-celled, hyaline, narrowly ellipsoid to almost bacilliform, 3-5(-6) x 1-1.5 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a holarctic early coloniser of small cracks of siliceous, sometimes base-rich or slightly calciferous rocks.

Growth form: Crustose endolithic

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

Commonnes-rarity: (info)

Alpine belt: rather rare

Subalpine belt: rather common

Oromediterranean belt: rare

Montane belt: very rare

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: rather rare

Humid mediterranean belt: rare

Dry mediterranean belt: very rare

pH of the substrata:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

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

Herbarium: TSB (35354)
2002/07/16

Felix Schumm – CC BY-SA 4.0

[4280], Schweiz, Kanton Graubünden, Unterengadin, Lavin auf Granitblöcken oberhalb des Hotels Crusch Alba, ca. 1460 m. Leg. et det. Schumm 25.08.1995.

Felix Schumm – CC BY-SA 4.0

[4280], Schweiz, Kanton Graubünden, Unterengadin, Lavin auf Granitblöcken oberhalb des Hotels Crusch Alba, ca. 1460 m. Leg. et det. Schumm 25.08.1995.

Felix Schumm – CC BY-SA 4.0

[4280], Schweiz, Kanton Graubünden, Unterengadin, Lavin auf Granitblöcken oberhalb des Hotels Crusch Alba, ca. 1460 m. Leg. et det. Schumm 25.08.1995.

Felix Schumm – CC BY-SA 4.0

[4280], Schweiz, Kanton Graubünden, Unterengadin, Lavin auf Granitblöcken oberhalb des Hotels Crusch Alba, ca. 1460 m. Leg. et det. Schumm 25.08.1995.

Felix Schumm – CC BY-SA 4.0

[4280], Schweiz, Kanton Graubünden, Unterengadin, Lavin auf Granitblöcken oberhalb des Hotels Crusch Alba, ca. 1460 m. Leg. et det. Schumm 25.08.1995.

Felix Schumm – CC BY-SA 4.0

[4280], Schweiz, Kanton Graubünden, Unterengadin, Lavin auf Granitblöcken oberhalb des Hotels Crusch Alba, ca. 1460 m. Leg. et det. Schumm 25.08.1995.

Pier Luigi Nimis - CC BY-SA 4.0

TSB 41297

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Polysporina_simplex.htm

France, session AFL août 2005 en Lozère
as Polysporina simplex

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Polysporina_simplex.htm

France, session AFL août 2005 en Lozère
as Polysporina simplex

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Polysporina_simplex.htm

France, session AFL août 2005 en Lozère
as Polysporina simplex

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Polysporina_simplex.htm

France, session AFL août 2005 en Lozère
as Polysporina simplex

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France, Pt. de Founteun

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France, JH Ard

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France, St. Anne La Palud

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France, Saint Nic

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=157&lang=en

France

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, Knöchel
as Polysporina simplex

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, Knöchel
as Polysporina simplex

Wolfgang von Brackel - CC BY-4.0

Germany, Bavaria, Knöchel
as Polysporina simplex

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, ad saxa in opp. Tregnago 1855

Sebastiano Dose - CC BY 4.0

Armenia, Vayots Dzor Province, municipality of Areni, along the road H40 going up to the ridge above the Noravank Gorge; on siliceous limestone (Kieselkalk). 39°42’15” N/ 45°12’09” E, ca. 1420 m. 28.09.2024. leg., Dose, Nimis & Muggia TSB 45045

Magnusson A. H. (1935) Acarosporaceae, Thelocarpaceae. - In: Rabenhorst G. L.: Kryptogamen-Flora von Deutschland, Österreich, und der Schweiz-. 2nd- IX. Die Flechten. Abt. 5- 1. Gebr. Borntraeger. Leipzig, pp. 1-318. – Public Domain

Magnusson A. H. (1935) Acarosporaceae, Thelocarpaceae. - In: Rabenhorst G. L.: Kryptogamen-Flora von Deutschland, Österreich, und der Schweiz-. 2nd- IX. Die Flechten. Abt. 5- 1. Gebr. Borntraeger. Leipzig, pp. 1-318. – Public Domain

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