ITALIC 8.0

Parmelina mediterranea Barcenas-Peña, Divakar, A. Crespo, Núñez-Zapata, Lumbsch & Grewe

J. of Fungi 9, 12, no. 1180: 9, 2023.

Synonyms:

Distribution: C- Tosc (Barcenas-Peña & al. 2023). S - Si (Barcenas-Peña & al. 2023).

Description: Thallus foliose, heteromerous, forming regular rosettes. Lobes pale mineral grey to blue-grey, sublinear to elongate, often imbricate, more or less shiny, rounded at apices, smooth, faintly maculate, 2-7 mm wide, with more or less crenate and wavy margins and characteristically rounded, eciliate axils, the central parts of thallus with a dense cover of cylindrical, frequently branched, 0.5-1.5 mm tall isidia, concolorous with thallus in lower part, brown to black at tips; lower surface brown at margin, otherwise black, with black, mostly simple, 1-2 mm long rhizines. Upper cortex of tightly packed, anticlinally oriented hyphae, with a pored epicortex, the cell walls with isolichenan; medulla white; algal layer continuous; lower cortex paraplectenchymatous, with rounded and thick-walled cells. Apothecia very rare, lecanorine, up to 4 mm across, with a brown disc and a usually isidiate thalline margin. Epithecium brownish; hymenium and hypothecium colourless. Asci 8-spored, Lecanora-type. Ascospores 1-celled, hyaline, short-ellipsoid, 9-13 x 5-7 μm. Pycnidia rare, appearing as black dots. Photobiont chlorococcoid. Spot tests: upper cortex K+ yellow, C-, KC-, P-; medulla K-, C+ red, KC+ red, P- or P+ faintly yellow, UV-. Chemistry: upper cortex with atranorin, medulla with lecanoric acid.

Note: a Mediterranean-Macaronesian, epiphytic or epilithic, cryptic species which can be distinguished from the sympatric P. tiliacea only by molecular data. It is hitherto known from Italy, Spain (including the Canary Islands), and Tunisia.

Growth form: Foliose, broad lobed

Substrata: bark and rocks

Photobiont: green algae other than Trentepohlia

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

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: very rare

Dry mediterranean belt: very rare

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

Source: Barcenas-Peña A., Divakar P.K., Crespo A., Núñez-Zapata J., Lumbsch H.T., Grewe F. 2023. Reference-based restriction-site-associated DNA sequencing data are useful for species delineation in a recently diverged asexually reproducing species complex (Parmeliaceae, Ascomycota). J. of Fungi, 9, 12:1180.

holotype