ITALIC 7.0

Arthonia stereocaulina (Ohlert) R. Sant.

Lichens and Lichenicolous Fungi of Sweden and Norway: 18, 1993. Basionym: Arthonia nephromiaria var. stereocaulina Ohlert - Schr. Phys.-Ökon. Ges. Königsberg, 11: 49, 1870.

Synonyms: Bryostigma stereocaulinum (Ohlert) S. Y. Kondr. & J.-S. Hur

Distribution: N - TAA (Bilovitz & al. 2014, Brackel 2016).

Description: Thallus inapparent, not lichenized, the hyphae developing on the phyllocladia of Stereocaulon-species. Apothecia arthonioid, black, epruinose, 0.1-0.3(-0.5) mm across, with a flat to slightly convex disc, without a distinct proper margin. Proper exciple poorly developed; epithecium pale green-brown; hymenium pale brown, I+ rapidly wine-red, K/I+ purple to brown-red; paraphysoids distinct; hypothecium colourless to pale reddish brown. Asci 8-spored, broadly clavate to subglobose, semi-fissitunicate, with a large, non-amyloid apical dome, and a distinct ocular chamber, Arthonia-type. Ascospores 1-septate, with unequal cells, hyaline, narrowly ellipsoid, (10.5-)11.5-14.5(-17) x 4-6(-7.5) μm. Photobiont absent. Spot tests: K-, C-, KC-, P-. Chemistry: without lichen substances.

Note: a lichenicolous fungus growing on species of Stereocaulon, probably more widespread in the Alps.

Growth form: Lichenicolous fungus

Substrata: soil, terricolous mosses, and plant debris

Reproductive strategy: mainly sexual

paras Stereocaulon spp.

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: very rare

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

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