ITALIC 8.0

Arthopyrenia parolinii Beltr.

Lich. Bassan.: 239, 1858

Synonyms: Spermatodium parolinii (Beltr.) Trevis.

Distribution: N - Ven (Isocrono & Ravera 2024).

Description: Thallus crustose, thinly episubstratic, dark grey, not lichenized. Perithecia black, 0.15-0.2 mm across, subglobose, more or less circular in outline, numerous and scattered, superficial, many with a depressed ostiole. Involucrellum reddish brown, clypeate, with amorphous pigment localized in the cell walls, of textura intricata, not continuous below the hamathecium, the pigment remaining brown in K; exciple colourless, scarcely discernible; pseudoparaphyses moniliform, dissolving early and leaving only fragments embedded in gel; periphysoids not present. Asci 8-spored, cylindrical-clavate, bitunicate, with a distinct apical region lacking a nasse, the dehiscence typically fissitunicate, 60-70 x 24-27 µm. Ascospores 5-7-septate, slightly constricted at septa, hyaline, clavate with rounded apices, 21-22 x 4-5 µm, irregularly arranged in the asci, the perispore indistinct. Photobiont absent. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a long-forgotten, but quite characteristic epiphytic species known only from a few historical collections in Veneto, mostly on Tilia. For further information see Isocrono & Ravera (2024).

Growth form: Fungus

Substrata: bark

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: very 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

Maria Zardini - Museo di Storia Naturale di Venezia - CC BY 4.0

V. Trevisan - Lichenotheca Veneta 1, 1, nr. 25

Source: Isocrono D., Ravera S. 2024. Typification of the name Arthopyrenia parolinii Beltr. (Ascomycota, Dothideomycetes, Pleosporales, Arthopyreniaceae). MycoKeys, 104: 1-8.

Exsiccata of Arthopyrenia parolinii Beltramini from the lichen herbarium of A.B. Massalongo in VER A fragment of linden bark, colonized by the lichen and glued to the herbarium sheet with the name of the species and note “Herb. Beltramini” written by Massalongo in black ink, and the locality of collection, in red ink, written by Beltramini B detail of thallus and perithecia in surface view. Scale bar: 1 mm.

Source: Isocrono D., Ravera S. 2024. Typification of the name Arthopyrenia parolinii Beltr. (Ascomycota, Dothideomycetes, Pleosporales, Arthopyreniaceae). MycoKeys, 104: 1-8.

Arthopyrenia parolinii A vertical section through a perithecium, arrows showing hamathecium and K- excipulum B bitunicate asci and pluriseptate ascospores in 10% KOH. Scale bars: 15 µm.