ITALIC 8.0

Rinodina nivalis H. Mayrhofer

J. Hattori Bot. Lab., 55: 442, 1984.

Synonyms:

Distribution: N - TAA.

Description: Thallus crustose, endosubstratic, poorly evident. Apothecia lecanorine, up to 0.5 mm across, adpressed to slightly immersed, with a more or less flat, black disc, an entire, smooth thalline margin, and a proper margin forming a parathecial ring within the thalline margin; old apothecia may appear as lecideine, due to darkening of the outer cells of the thalline margin. Proper exciple thin laterally, expanding considerably in upper part; epithecium dark brown; hymenium colourless, inspersed with oil droplets especially in the basal and peripheral parts, 100-120 µm high; paraphyses 1.5-2 µm thick at mid-level, the apical cells swollen, 5-7 µm wide, with a brown cap, the pigment extending to the upper septa; hypothecium colourless, up to 150 µm high. Asci 8-spored, clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, brown, ellipsoid, 12-17 x 8-11.5 µm ,thin-walled throughout, the old ones sometimes slightly constricted at septum, intermediate between the Dubyiana-type and the Buellia-type. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: this species is only known from the eastern Alps, on dolomite. Indicator values are tentative.

Growth form: Crustose endolithic

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

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