ITALIC 7.0

Scytinium magnussonii (Degel. & P.M. Jørg.) Otálora, P.M. Jørg. & Wedin

Fungal Divers., 64, 1: 290, 2013. Basionym: Leptogium magnussonii Degel. & P.M. Jørg. in Jørgensen - Lichenologist, 26: 14, 1994.

Synonyms:

Distribution: N - Lomb. C - Tosc (Benesperi 2006), Mol (Paoli & al. 2015). S - Bas (Potenza & al. 2014).

Description: Thallus foliose, dark blue-grey, dark brown to almost black, gelatinous when wet, 2-5 cm wide. Lobes rounded, (1-)2-3 mm wide, 100-125 µm thick, smooth or partially finely striate, with clusters of granulose to coralloid, blackish brown isidia. Lower surface paler blue-grey, naked or with a few whitish hapters. Upper and lower cortex composed of a single layer of angular cells, the layer inbetween of intertwined hyphae and loosely arranged chains of Nostoc. Apothecia extremely rare, lecanorine, laminal, shortly pedicellate, with a usually isidiate thalline margin, known only in the immature stage. Photobiont cyanobacterial (Nostoc, the cells in short chains). Spot tests: all negative. Chemistry: without lichen substances.

Note: described from Scandinavia, and also known from western Europe and Austria, this species is found in seepage tracks of granitic rocks, gneiss and weakly calcareous rocks below the subalpine belt. The specimen from Lombardy was collected by U. Gröner (Cannero Municipality, Valle Piancassone, on the road to Travego).

Growth form: Foliose, narrow lobed

Substrata: rocks

Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)

Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)

Periodically submerged (e.g. in creeks)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

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

Index Fungorum GBIF

Leif Stridvall