ITALIC 7.0

Protoparmelia oleagina (Harm.) Coppins

in Coppins & al., Lichenologist, 24: 368, 1992. Basionym: Lecanora oleagina Harm. - Lich. France: 1023, 1913.

Synonyms: Lecanora furva H. Magn.?

Distribution: N - TAA (Nascimbene & al. 2008c, 2022, Nimis & al. 2015), Lomb.

Description: Thallus crustose, episubstratic, dark olivaceous brown to brown-black, dull, epruinose, continuous to rimose-areolate, densely covered in 0.07-0.15 mm wide and up to 0.4 mm high isidioid outgrowths with a one cell-layer thick rudimentary cortex. Apothecia very rare, lecanorine, up to 0.7 mm across, sessile, with a slightly concave to flat, blackish brown disc and a thick thalline margin even with disc. Epithecium brownish; hymenium colourless, c. 55 μm high; paraphyses coherent, branched in upper part, c. 2 μm thick, the apical cell c. 3 μm wide; hypothecium colourless; algal layer incomplete below hypothecium. Asci 8-spored, clavate, approaching the Lecanora-type, with a well-developed amyloid tholus and a distinct, non-amyloid axial mass. Ascospores 1-celled, hyaline, oblong, 9.5-15 x 3-3.5 μm. Photobiont chlorococcoid. Spot tests: thallus and medulla K-, C-, KC-, P-. Chemistry: traces of lobaric acid.

Note: mostly on lignum, more rarely on acid bark in damp deciduous forests. This "western" species should be looked fore more intensively in Tyrrhenian Italy. The record from Lombardy is a "virtual" record. Sphinctrina anglica, an obligate parasite of this species, was reported from this region (see Nimis 1993: 659), based on Anzi, Lich. Lang. 212.

Growth form: Crustose

Substrata: bark and lignum

Photobiont: green algae other than Trentepohlia

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

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: extremely rare

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: absent

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

Index Fungorum GBIF

P.L. Nimis CC BY-SA 04

TSB 34263

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

Herbarium: TSB (34263)
2001/12/04