Buellia arnoldii Servít
in Servít & Nádvornik, Vestn. Král. Ceské Spolec. Nauk, 12: 39, 1937.
Synonyms: Hafellia arnoldii (Servít) Hafellner & Türk
Description: Thallus crustose, episubstratic, whitish to whitish grey, thin, continuous to rimose, smooth. Apothecia lecideine, sessile, black, epruinose, 0.4-0.8(-1) mm across, with a flat to slightly convex disc, and a thin, often shiny, persistent proper margin. Proper exciple 60-90 µm wide laterally, K-: epithecium brown to olive-brown; hymenium colourless, 100-150 µm high, densely inspersed with oil droplets; paraphyses 1.5-2 μm thick at mid-level, the apical cells slightly swollen, (2.5-)3-4.5 µm wide; hypothecium dark brown. Asci 8-spored, clavate to cylindrical-clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass), the wall I-, but the thin outer gel I+ blue, Bacidia-type. Ascospores 1-septate, brown, ellipsoid, (23-)26-29(-32) x (9-)12-15(-16.5) µm, with subapically thickened inner wall and septum, pointed at apices, often curved, smooth, Callispora-type. Pycnidia black. Conidia cylindrical or narrowly ellipsoid, 3-3.5 x 1-1.5 μm. Photobiont chlorococcoid. Spot tests: thallus K+ yellow, C-, KC-, P- or P+ very faintly yellow, UV-. Chemistry: thallus with atranorin.
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: rare
Montane belt: absent
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent
pH of the substrata:
1 2 3 4 5
Solar irradiation:
1 2 3 4 5
Aridity:
1 2 3 4 5
Eutrophication:
1 2 3 4 5
Poleotolerance:
0 1 2 3
Altitudinal distribution:
1 2 3 4 5 6
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
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Occurrence data
Predictive map
E. Pittao CC BY-SA 04
TSB 13973
P.L. Nimis CC BY-SA 4.0
TSB 13973
E. Pittao CC BY-SA 04
TSB 13973
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: rare
Montane belt: absent
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent
pH of the substrata:
| 1 | 2 | 3 | 4 | 5 |
Solar irradiation:
| 1 | 2 | 3 | 4 | 5 |
Aridity:
| 1 | 2 | 3 | 4 | 5 |
Eutrophication:
| 1 | 2 | 3 | 4 | 5 |
Poleotolerance:
| 0 | 1 | 2 | 3 |
Altitudinal distribution:
| 1 | 2 | 3 | 4 | 5 | 6 |
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map
E. Pittao CC BY-SA 04
TSB 13973
P.L. Nimis CC BY-SA 4.0
TSB 13973
