Naevia punctiformis (Ach.) A. Massal.

Framm. Lichenogr.: 8, 1855.. Basionym: Arthonia punctiformis Ach. - K. Vetensk.-Akad. Nya Handl., 29: 130, 1808.
Synonyms: Arthonia armoricana f. saltelii B. de Lesd.; Arthonia astroidea f. fraxinea Bagl.; Arthonia atomaria A. Massal.; Arthonia atomaria var. depressa A. Massal.; Arthonia betulicola A. Massal. non sensu Anzi; Arthonia celtidis A. Massal.; Arthonia griseoalba Anzi?; Arthonia insinuata Stirt.; Arthonia populina A. Massal.; Arthonia punctiformis Ach.; Arthonia punctiformis f. oleandri (Rabenh.) Redinger; Arthonia punctiformis var. glaucescens Ach.; Arthonia punctiformis var. olivacea Ach.; Arthonia quadriseptata (Ohlert) Lettau; Naevia atomaria (A. Massal.) A. Massal.; Naevia celtidis (A. Massal.) A. Massal.; Naevia populina (A. Massal.) A. Massal.; Opegrapha atra var. abbreviata auct. hisp. p.max.p.
Distribution: N - VG, Frl, Ven (Sundin & Tehler 1998, Lazzarin 2000b, Nascimbene 2005c, Nascimbene & Marini 2007), TAA (Nascimbene & al. 2007b), Lomb (Zocchi & al. 1997, Furlanetto 2010), Piem (Isocrono & al. 2004, Giordani & Malaspina 2016), Emil (Valcuvia & Grieco 1995, Tretiach & al. 2008, Benesperi 2009), Lig (Giordani & Incerti 2008). C - Tosc (Ravera 2006b, Monaci & al. 1997, Tretiach & al. 2008, Loppi & Baragatti 2011), Marc (Nimis & Tretiach 1999, Frati & Brunialti 2006, Caporale & al. 2008), Umb (Ravera 1998, Ravera & al. 2006), Laz (Ravera & al. 1999, Nimis & Tretiach 2004, Stofer 2006, Munzi & al. 2007), Abr (Stofer 2006, Caporale & al. 2016), Mol (Caporale & al. 2008, Genovesi & Ravera 2014, Caporale & Ravera 2020), Sar (Sundin 1999, Zedda 2002, Rizzi & al. 2011, Cossu 2013, Neuwirth 2018). S - Camp (Aprile & al. 2002, 2003b, Nimis & Tretiach 2004, Garofalo & al. 2010, Brunialti & al. 2013, Ravera & Brunialti 2013, Catalano & al. 2016), Pugl (Nimis & Tretiach 1999), Bas (Nimis & Tretiach 1999, Potenza 2006), Cal (Puntillo 1996, Puntillo & Puntillo 2004, Stofer 2006), Si (Grillo & Carfì 1997, Grillo 1998, Grillo & al. 2002).
Description: Thallus crustose, very thin, not lichenized, immersed in the bark, usually effuse, indistinct or slightly bleaching the bark, whitish to pale grey-brown, without a prothallus. Apothecia arthonioid, 0.2-1.4 x 0.3-0.4 mm, 40-60 µm tall, black, epruinose, scattered all over the thallus, usually immersed, flat and non erumpent, variable in size and shape, from round to elongate, rarely branched or substellate. Proper exciple inconspicuous, very thin, reddish brown, interrupted below the hypothecium; epithecium brown or olive-brown, K+ green; hymenium colourless, 25-50 µm high; paraphysoids 1-1.5 µm wide, the apical cells up to c. 3.5 µm wide, with dark brown walls; hypothecium colourless, poorly developed. Asci 8-spored, subglobose, semi-fissitunicate, with a large apical dome and a distinct ocular chamber, the apex with a K/I+ blue ring-structure, Arthonia-type. Ascospores 3(-5)-septate, hyaline, oblong-ovoid to oblong, the apical cell not enlarged, 13-25 x (4-)5-6 µm. Photobiont absent. Spot tests: K-, C-, KC-, P-. Chemistry: without lichen substances.
Note: a temperate to boreal-montane, circumpolar early coloniser of smooth bark, especially of twigs, rare in dry areas; doubtfully lichenised and probably heterogeneous (Moen 2019).
Growth form: Crustose
Substrata: bark
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: very rare
Oromediterranean belt: extremely rare
Montane belt: rather common
Submediterranean belt: rather common
Padanian area: extremely rare
Humid submediterranean belt: rather common
Humid mediterranean belt: rather rare
Dry mediterranean belt: extremely rare

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples


D. Puntillo CC BY-SA 4.0



Felix Schumm – CC BY-SA 4.0
[16680], Germany, Niedersachsen, Kreis Stade, Jork, Osterladekop 57, mittlerer Kronenbereich einer Betula pendula im Hausgarten. Leg. Hans-Georg Wagner, 19.Sept. 2009.



Domenico Puntillo; Owner: Domenico Puntillo
Italy



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante, on Fraxinus ornus
16/02/2017



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (32322)
2003/03/11



Felix Schumm – CC BY-SA 4.0
[16680], Germany, Niedersachsen, Kreis Stade, Jork, Osterladekop 57, mittlerer Kronenbereich einer Betula pendula im Hausgarten. Leg. Hans-Georg Wagner, 19.Sept. 2009.



Felix Schumm – CC BY-SA 4.0
[16680], Germany, Niedersachsen, Kreis Stade, Jork, Osterladekop 57, mittlerer Kronenbereich einer Betula pendula im Hausgarten. Leg. Hans-Georg Wagner, 19.Sept. 2009.


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


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


Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.



Domenico Puntillo; Owner: Domenico Puntillo
Italy