Protoblastenia oulankaensis Pykälä & Myllys
MycoKeys, 124: 212, 2025.
Synonyms:
Description: Thallus crustose, endosubstratic or more rarely very thinly episubstratic, continuous or finely cracked, whitish or pale grey, most often inconspicuous. Apothecia c. 10-50 (rarely up to 80)/cm2, 0.3-0.9 mm across, sessile to immersed in the lower fourth, not constricted at base, sometimes leaving shallow pits in the rock when they fall off, with a convex, orange to dark orange disc and a very thin, soon excluded proper margin. Proper exciple poorly developed, of branched, parallel-radiating hyphae, colourless or patchily pale orange; epithecium dark orange-brown, 12-25 µm high, reacting K-, K+ darkening orange or K+ wine-red (not releasing a K+ purple-red solution); hymenium colourless to partly violet, sometimes inspersed with oil droplets, 70-120 µm high; paraphyses coherent, sparingly branched and anastomosing, 2-3 µm thick at mid-level, the apical cells slightly swollen, up to 3.5 µm wide; hypothecium colourless to yellowish, more rarely patchily red-brown, 60-220 μm high. Asci 8-spored, clavate, with a well-developed, amyloid tholus containing a more intensely amyloid, indistinct tube structure, without an ocular chamber, approximating the Porpidia- or Psora-types. Ascospores 1-celled, hyaline, broadly ellipsoid to ovoid, (8.8-)12-16(-18.8) x (5-)6-8(-9.6) μm, without a distinct perispore. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; apothecia K- or K+ wine-red. Chemistry: unknown, probably apothecia with 1-O-methylparietin.
Growth form: Crustose
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: extremely rare
Subalpine belt: extremely 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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CC BY 4.0 - Source: Pykälä J, Myllys L (2025) Unexpected species richness of the lichen genus Protoblastenia (Lecanorales, Psoraceae) in Finland. MycoKeys 124: 193-226. https://doi.org/10.3897/mycokeys.124.162802
Scale bar: 0.5 mm.
Growth form: Crustose
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: extremely rare
Subalpine belt: extremely 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
