ITALIC 8.0

Arthopyrenia coppinsii Ravera

Lichenologist, 38: 22, 2006.

Synonyms:

Distribution: N - Lig (Ravera 2006b). C - Tosc (Ravera 2006b).

Description: Thallus crustose, endosubstratic, poorly evident, probably not lichenized. Perithecia black, scattered, 0.1-0.3 mm in diam., subglobose, circular or ellipsoid in outline, often with depressed ostioles. Involucrellum dimidiate, dark brown, K-, 13-20 μm thick, intermixed with c. 2.5.2.7 μm thick, dark hyphae, the amorphous pigment localized in the cell wall; exciple brown in upper part, colourless at base, 5-7 μm thick, K-; pseudoparaphyses dissolving and leaving only fragments (to 1 μm wide) embedded in gel; periphysoids 5-15 x 1-2 μm, branched and septate. Asci 8-spored, obclavate-obpyriform, fissitunicate, the endotunica thickened to the apex, with a rounded ocular chamber, the obconical structure in tholus I+ blue. Ascospores 1-septate, hyaline, 8.8-10.9 x 3-4.5 μm, non-guttulate, constricted at septum, with a larger upper cell and a pointed lower cell; perispore indistinct but immature spores from broken asci have a broad halo. Photobiont probably absent. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a recently-described, probably non-lichenised species, apparently related to A. salicis, with which, according to Ravera (2006b) it was confused by Putortì & Loppi (1999) and Brunialti & al. (2001). It occurs on rough bark, especially of Fraxinus excelsior, in species-rich communities of well-preserved deciduous woodlands.

Growth form: Fungus

Substrata: bark

Reproductive strategy: mainly sexual

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

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

Index Fungorum GBIF

Source: Ravera S. 2006b. Two new species of Arthopyrenia from Italy. Lichenologist, 38, 1: 21-26.

Sonia Ravera

Ascus

Sonia Ravera

Ascus

Sonia Ravera

Ascospores