ITALIC 7.0

Protothelenella polytrichi Döbbeler & H. Mayrhofer

in Döbbeler, Arctic Alpine Mycology, 2: 92, 1987

Synonyms:

Distribution: N - TAA (Triebel, Microfungi Exsiccati, 5: no. 111).

Description: Thallus inapparent, not lichenized, the hyphae developing amongst the cells of Polytrichastrum sexangulare-leaflets. Perithecia grey-black to black (paler in lower part), covered with a hyaline layer of cells, pyriform to rarely subglobose, 0.2-0.3 mm across. Exciple dull green, of strongly anastomosing, conglutinate, to 1 μm thick hyphae with narrow lumina; paraphysoids persistent, thread-like, c. 1.5 μm thick, branched and anastomosing in lower part; periphysoids absent; hymenial gel I+ reddish or I+ blue at low concentrations, K/I+ blue. Asci 8-spored, subcylindrical, short-stalked, thick-walled (c. 2 μm), fissitunicate, the outer gelatinous wall layer I+ blue, with a very faintly I+ blue apical plug. Ascospores 3-septate, hyaline, ellipsoid to long-ellipsoid, 10-15 x 3.5-5.5 μm. Photobiont absent. Spot tests: K-, C-, KC-, P-. UV-. Chemistry: without lichen substances.

Note: an apparently non-lichenised (contact to algal cells not observed so far), arctic-alpine, muscicolous species growing on leaflets of Polytrichastrum sexangulare in the alpine belt, difficult to detect when on the upper side of the dry moss with enrolled leaflets; apparently rare, with some scattered records from the Alps, but probably much overlooked.

Growth form: Fungus

Substrata: soil, terricolous mosses, and plant debris

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: absent

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

Karl-Franzens-Universität Graz (GZU), GZU000286336

HOLOTYPE