Arthonia punctella Nyl.
in Carroll, Nat. Hist. Rev. Quart. J. Sci., 6: 533, 1859.
Synonyms:
Description: Thallus inapparent, not lichenized, developing inside the thalli of Diplotomma alboatrum and D. chlorophaeum. Apothecia arthonioid, emarginate, black, dull, rounded to slightly oblong–irregular ellipsoid, 0.1-0.2 mm wide, flat to finally slightly convex, crowded in small orbicular patches on the host thallus. Proper exciple very poorly developed: epithecium greenish brown, K+ olive–green; hymenium colourless, 30-60 μm high, I+ blue, K/I+ blue; paraphysoids branched and anastomosing, 1.3-3(-3.5) μm thick at mid-level, the apical cells only slightly swollen, up to 4(-5) μm wide; hypothecium dark reddish brown in upper part, colourless in lower part, 35-65 μm high, K+ olive–green. Asci 8-spored, broadly clavate to ovoid, semi-fissitunicate, with a large apical dome and a distinct ocular chamber, Arthonia-type. Ascospores 1-septate, at first hyaline but soon turning pale brown and verruculose, ovoid to oblong-ellipsoid, 12-17(-18) x 5-6(-7) μm. Photobiont absent. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Lichenicolous fungus
Substrata: bark and rocks
Reproductive strategy: mainly sexual
paras Diplotomma spp.
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: absent
Dry submediterranean belt: extremely rare
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
Paul Cannon - CC BY-SA NC - Source: http://fungi.myspecies.info/taxonomy/term/7428/media
Paul Cannon - CC BY-SA NC - Source: http://fungi.myspecies.info/taxonomy/term/7428/media
Source: http://fungi.myspecies.info/all-fungi/arthonia-punctella - CC BY-NC
Source: Frisch, A., Holien, H., Klepsland, J.T., Suija, A. & Bendiksby, M. 2022. New data on lichenicolous fungi in Norway. Graphis Scripta 34 (7): 59–133. Oslo. ISSN 2002-4495. - CC BY-4.0
Arthonia punctella (on Diplotomma alboatrum). TRH-L-24897. Scale = 1 mm. Photo: A. Frisch.
Growth form: Lichenicolous fungus
Substrata: bark and rocks
Reproductive strategy: mainly sexual
paras Diplotomma spp.
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: absent
Dry submediterranean belt: extremely rare
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
Paul Cannon - CC BY-SA NC - Source: http://fungi.myspecies.info/taxonomy/term/7428/media
Paul Cannon - CC BY-SA NC - Source: http://fungi.myspecies.info/taxonomy/term/7428/media
Source: http://fungi.myspecies.info/all-fungi/arthonia-punctella - CC BY-NC
