Calicium glaucellum Ach.

Calicium glaucellum Ach.

Meth. Lich.: 97, 1803.

Synonyms: Calicium discoidale Ach.

Distribution: N - Frl (Puntillo & Puntillo 2009), Ven (Nascimbene 2008c), TAA (Nascimbene 2008b, 2013, Nascimbene & al. 2009, 2010, 2022, Nimis & al. 2015), Emil (Benesperi 2009, Fariselli & al. 2020), Lig (Herb. von Brackel 22). C - Tosc (Benesperi 2007, Puntillo & Puntillo 2009), Marc (Nimis & Tretiach 1999, Umb (Ravera 1998, Ravera & al. 2006, Puntillo & Puntillo 2009), Laz (Ravera 2001, Puntillo & Puntillo 2009), Abr (Puntillo & Puntillo 2009), Sar (Zedda 2002, 2002b, Puntillo & Puntillo 2009, Cossu 2013). S - Camp (Puntillo & Puntillo 2009), Cal (Puntillo 1994, 1996, Puntillo & Puntillo 2009).

Description: Thallus crustose, thin, endosubstratic and poorly evident or rarely thinly episubstratic and granular-verrucose, dark grey green. Apothecia stalked, pin-like, black with a thin whitish pruina which is most abundant at the edge and on the lower side of capitulum, or more rarely epruinose. Stalk shiny black, sometimes white-pruinose in the uppermost part, 0.5-0.9 mm high, of strongly sclerotized, dark brown to dark aeruginose, irregularly interwoven hyphae, the outer layer covered with a thin, transparent gelatinous sheath. Capitulum lenticular to obovoid, with a well-developed, cup-shaped exciple; mazaedium well developed, black; hypothecium dark. Asci cylindrical, formed singly, dissolving early, with uniseriate ascospores. Ascospores 1-septate, dark brown, ellipsoid, 9-13 x 5-7 µm, with a thick, ornamented wall; young spores with mainly longitudinally arranged ridges, mature spores with irregular cracks and short ridge fragments. Photobiont chlorococcoid. Spot tests: thallus K- or K+ dull yellow, C-, KC-, P-; ascomata I- in all parts. Chemistry: thallus with sekikaic acid (major) and related compounds.

Note: a temperate to boreal-montane, holarctic species found on lignum and on acid bark, especially on decorticated stumps of conifers, but also on broad-leaved trees, e.g. on Castanea, widespread throughout Italy.

Growth form: Crustose

Substrata: bark and lignum

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: rather rare

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: 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

Domenico Puntillo CC BY-SA 4.0

Juri Nascimbene - CC BY-SA 4.0

Paneveggio, Reg. Trentino-Alto Adige Prov. Trento, Italy.

Juri Nascimbene - CC BY-SA 4.0

Paneveggio, Reg. Trentino-Alto Adige Prov. Trento, Italy.
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

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

Herbarium: TSB (11888)
2001/12/05

Domenico Puntillo - CC BY-SA 4.0

Italy, Calabria

Pier Luigi Nimis - CC BY-SA 4.0

TSB 41541

Pier Luigi Nimis - CC BY-SA 4.0

TSB 41543

Pier Luigi Nimis - CC BY-SA 4.0

TSB 41542

Pier Luigi Nimis - CC BY-SA 4.0

TSB 41543

Pier Luigi Nimis - CC BY-SA 4.0

TSB 41543

Pier Luigi Nimis - CC BY-SA 4.0

TSB 41543

Andres Saag; Owner: University of Tartu

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C3/Calicium_glaucellum.htm

France, 22/8/2016 - session AFL dans le Jura

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

Central Europe; Germany; Rheinland-Pfalz: Hunsrück.

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