Farnoldia similigena (Nyl.) Hertel
Mitt. bot. Staatss. München, 19: 443, 1983. Basionym: Lecidea similigena Nyl. - Flora, 64: 451, 1881.
Synonyms: Lecidea subrhaetica Arnold ex Lettau; Melanolecia similigena (Nyl.) Hertel; Tremolecia similigena (Nyl.) Hertel
Description: Thallus crustose, episubstratic, of strongly convex, contiguous or scattered areoles, white to yellowish white, 0.15-0.7 mm thick, forming small patches, without a distinct prothallus. Medulla white, distinctly I+ blue. Apothecia lecideine, black, somehow shiny, constricted at base, round, but often arranged in clusters and deformed by mutual compression, 0.15-0.7(-1) mm across, with a flat to convex disc, and a thick, raised, often wavy proper margin. Proper exciple very thick, black or brown-black, K+ reddish brown; epithecium blue-green to green-black, 15-20 µm high; hymenium colourless or pale green in upper part, 60-80 µm high; paraphyses coherent, simple or forked in upper part, anastomosing, 1.7-2.2 µm thick at mid-level, the apical cells to 3.5 µm wide; hypothecium pale to dark brown, much paler than exciple, 30-170 µm high. Asci 8-spored, clavate, with a I+ pale blue tholus and a central amyloid tube, approaching the Porpidia-type. Ascospores 1-celled, hyaline, narrowly ellipsoid, 10-22 x 4-6.5 µm, halonate at least when young. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: very rare
Subalpine belt: absent
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
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: very rare
Subalpine belt: absent
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
