ITALIC 8.0

Arthonia bueriana (J. Lahm) Zahlbr.

Cat. Lich. Univ., 2: 14, 1922. Basionym: Coniangium buerianum J. Lahm - Verh. zool.-bot. Ges. Wien, 23: 507, 1874.

Synonyms: Arthonia convexella Nyl.

Distribution: N - Lomb (Morisi & Sereno 1995).

Description: Thallus crustose, mostly endosubstratic and inconspicuous, pale brown or olive-grey, doubtfully lichenized. Apothecia arthonioid, more or less immersed, rounded to slightly and irregularly lobed, 0.1-0.3 mm wide, with a black, epruinose, convex disc, without a proper margin. Proper exciple absent; epithecium brown-black, K-; hymenium colourless 45-55 μm high, I+ red; paraphysoids 0.5-1.5 μm thick at base; hypothecium brown, 25-35 μm high, K+ olive-green. Asci 8-spored, subglobose, semi-fissitunicate, with a large apical dome and a distinct ocular chamber, Arthonia-type. Ascospores 1-septate and slightly constricted at septum, with slightly unequal cells, hyaline, ellipsoid, 12-15 x 4-5 μm. Photobiont absent or trentepohlioid. Spot tests: K-, C-, KC-, P-. Chemistry: thallus without lichen substances.

Note: a rare, perhaps non-lichenised corticolous species known from a few stations in the submediterranean and montane belts of the Alps and in central Europe.

Growth form: Fungus

Substrata: bark

Reproductive strategy: mainly sexual

Pioneer species

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

Index Fungorum GBIF

Natural History Museum London - Source:

Natural History Museum London - Source: