Arthonia ruana A. Massal.

Arthonia ruana A. Massal.

Ric. Auton. Lich. Crost.: 49, 1852.

Synonyms: Arthonia anastomosans (Ach.) Nyl.; Arthonia beltraminiana (A. Massal.) H. Olivier; Arthonia rosacea Anzi; Arthoniopsis ruana (A. Massal.) Trevis.; Arthothelium beltraminianum A. Massal.; Arthothelium dispersum auct. non (DC.) Mudd; Arthothelium rosaceum (Anzi) Zahlbr.; Arthothelium ruanideum (Nyl.) Arnold; Arthothelium ruanum (A. Massal.) Körb.

Distribution: N - Frl (Grube & Giralt 1996), Ven (Sundin & Tehler 1998, Lazzarin 2000b), TAA (Nascimbene & al. 2007b), Lomb (Valcuvia & Truzzi 2007, 2007b), Piem. VA (Ongaro & al. 2022). C - Tosc. S - Camp (Ravera & al. 2018b), Pugl (Durini & Medagli 2004), Bas (Potenza 2006, Potenza & al. 2010, Potenza & Fascetti 2012, Ravera & al. 2021c), Cal (Puntillo 1996), Si (CLU 20822).

Description: Thallus crustose, endosubstratic, dull white, greyish brown to yellowish grey, smooth, thin, effuse, sometimes delimited by a dark prothallus, the thalline hyphae I-. Apothecia arthonioid, rounded to irregularly stellate in outline, 0.5-2 mm across, 70-95(-100) µm tall, slightly immersed and level with thallus, with a black, epruinose, rough, often cracked disc, without a distinct margin, often disintegrating in the central part and peripherically regenerating as small segregated hymenial patches. Epithecium brown-black, 13-21 µm high, K+ greenish; hymenium colourless to pale brown, 35-50 µm high, I+ reddish, K/I+ blue; paraphysoids coherent, simple or sparingly branched in upper part, 1-1.5 µm thick; hypothecium dark reddish brown, 20-50 µm high. Asci 8-spored, broadly clavate, semi-fissitunicate, with a large apical dome, a distinct ocular chamber, and a K/I+ blue ring. Ascospores muriform, with 4-9 transverse septa and 1-3 longitudinal septa, hyaline to pale brown and faintly warted when overmature, obovoid to broadly ellipsoid, (15-)17-24(-26) x 7-9(-11) µm. Pycnidia hemispherical, brown to black, the wall red-brown, K+ greenish. Conidia bacilliform, 4-6.5 x 1-1.5 µm. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a temperate-suboceanic lichen found on smooth bark of deciduous trees and shrubs (e.g. Alnus, Fagus, Fraxinus, Corylus, etc.) in humid deciduous forests, often on the basal parts of trunks; widespread, probably overlooked and more common in Italy than the few records would suggest.

Growth form: Crustose

Substrata: bark

Photobiont: Trentepohlia

Reproductive strategy: mainly sexual

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: absent

Dry mediterranean belt: absent

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

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

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

Herbarium: TSB (9241)
2001/11/21

Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/

Courtesy: Anita Stridvall

Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/

Courtesy: Anita Stridvall

Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0

Ad cort. Coniferarum in Euganeorum colle Rua.
Trevisan Lichenotheca Veneta 131

Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0

Ad cort. Coniferarum in Euganeorum colle Rua.
Trevisan Lichenotheca Veneta 131

Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0

Ad cort. Coniferarum in Euganeorum colle Rua.
Trevisan Lichenotheca Veneta 131

P.L. Nimis CC BY-SA 4.0

TSB 41419

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)

P.L. Nimis CC BY-SA 4.0

TSB 41420

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

P.L. Nimis CC BY-SA 4.0

TSB 41420

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Hoyet

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Charleroi

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1112&lang=en

Belgium, Charleroi

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

Corticolous; on Fraxinus excelsior.Central Europe; Germany; Hesse: Taunus (Wispertal).

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

Corticolous; on Fraxinus excelsior.Central Europe; Germany; Hesse: Taunus (Wispertal).

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

Corticolous; on Fraxinus excelsior.Central Europe; Germany; Hesse: Taunus (Wispertal).

real
time web analytics