Pannaria tavaresii P.M. Jørg.

Pannaria tavaresii P.M. Jørg.

Opera Bot., 45: 68, 1978.

Synonyms: Pannaria rubiginosa f. isidiosa Tav.

Distribution: N - Emil (Tretiach & al. 2008, Fariselli & al. 2020). C - Sar. S - Cal (Puntillo 1996).

Description: Thallus small-foliose, isidiate, forming orbicular rosettes up to 3 cm diam., developing on a black hypothallus which sometimes extends beyond the margins. Lobes contiguous, concave with raised margins, 3-4 mm wide and up 8 mm long, whitish or bluish grey to partly pale brown, scabrid or slightly pruinose, with granular to coralloid, mainly marginal, sometimes black-tipped isidia. Upper cortex paraplectenchymatous, 40-50 µm thick; medulla white. Apothecia lecanorine, up to 1 mm across, with a red-brown disc and a thick, often crenulate, sometimes isidiate thalline margin. Proper exciple subparaplectenchymatous, 30-40 µm thick; epithecium brownish; hymenium colourless, 100-150 µm high, I+ blue near the asci; paraphyses mostly simple, the apical cells hardly swollen; hypothecium colourless. Asci 8-spored, clavate to subcylindrical, with a well developed, non-amyloid or very weakly amyloid tholus lacking internal structures, and an intensely amyloid, thin outer sheath. Ascospores 1-celled, hyaline, ellipsoid, 20-24 x 10-12 µm with epispore; 15-19 x 9-10 µm without epispore. Photobiont cyanobacterial (Nostoc, the cells in clusters). Spot tests: thallus K-, C-, KC-, P+ orange. Chemistry: thallus with pannarin.

Note: a rare epiphytic species with a mainly southwestern distribution in Europe, restricted to Lobarion-communities in humid forests. It is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).

Growth form: Squamulose

Substrata: bark

Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)

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

Restricted to humid-warm, oceanic areas

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: extremely rare

Humid mediterranean belt: extremely rare

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

P.L. Nimis CC BY-SA 4.0

TSB 19734

E. Pittao

TSB 19734)

E. Pittao

TSB 34839)

E. Pittao

TSB 34839)

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

Herbarium: TSB (19734)
2001/11/28

Felix Schumm CC BY-SA 4.0

[8630], PORTUGAL, MADEIRA: an der Straße bei Portela, 32°44.812’ N, 16°49.623’ W, 575 m, an Zeder. Leg. F. Schumm, 15.04.2001 (13), conf. P.M. Jorgensen 2008

Felix Schumm CC BY-SA 4.0

[8630], PORTUGAL, MADEIRA: an der Straße bei Portela, 32°44.812’ N, 16°49.623’ W, 575 m, an Zeder. Leg. F. Schumm, 15.04.2001 (13), conf. P.M. Jorgensen 2008

Felix Schumm CC BY-SA 4.0

[8630], PORTUGAL, MADEIRA: an der Straße bei Portela, 32°44.812’ N, 16°49.623’ W, 575 m, an Zeder. Leg. F. Schumm, 15.04.2001 (13), conf. P.M. Jorgensen 2008

Felix Schumm – CC BY-SA 4.0

Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3

P.L. Nimis CC BY-SA 4.0

TSB 15734

P.L. Nimis CC BY-SA 4.0

TSB 15734

P.L. Nimis CC BY-SA 4.0

TSB 15734

P.L. Nimis CC BY-SA 4.0

TSB 15734

P.L. Nimis CC BY-SA 4.0

TSB 15734

P.L. Nimis CC BY-SA 4.0

TSB 15734

E. Pittao

TSB 19734)

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

Spain; Canary Islands; La Gomera. (700 m) on volcanic rock

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

Spain; Canary Islands; La Gomera. (700 m) on volcanic rock

real
time web analytics