Bacidina egenula (Nyl.) Vězda
Folia Geobot. Phytotaxon., 25: 432, 1991. Basionym: Lecidea egenula Nyl. - Flora, 48: 147, 1865.
Synonyms: Bacidia egenula (Nyl.) Arnold; Bacidia epiphylla Wheldon & Travis; Bacidia mediterranea B. de Lesd.; Bacidia peltigericola Vain.; Woessia egenula (Nyl.) van den Boom & P. Alvarado
Description: Thallus crustose, episubstratic, finely granulose, continuous to rimose, glaucous green to greenish brown, consisting of (15-)20-60(-90) µm thick goniocysts. Apothecia biatorine, (0.15-)0.2-0.6(-0.8) mm across, with a grey-brown, bluish-brown to black, flat to slightly convex, epruinose disc, and a usually persistent, often paler, finally sometimes excluded proper margin. Proper exciple 30-50 µm wide laterally, without crystals, blue-green, green-brown to purplish brown in upper and outer parts, more or less colourless in lower and inner parts; epithecium blue-green, green-brown to green-black, K-, N+ violet-red, sometimes with brown spots reacting K+ purplish, N+ orange; hymenium colourless, 35-60 µm high (more than a third of the apothecium height); paraphyses rather coherent, mostly simple, 1-1.5(-2) µm thick at mid-level, the apical cells 2-6 µm wide; hypothecium orange-brown in upper part, colourless in lower part, the pigmented parts K+ green-brown. Asci 8-spored, clavate to cylindrical-clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass) never penetrating through the entire d-layer, the wall K/I-, but the thin outer gel K/I+ blue, Bacidia-type. Ascospores 3-7-septate, hyaline, acicular, clavate, or long-bacilliform, mostly curved or flexuose, (15-)25-40(-45) x 1.5-2.5 µm, tapering at one end. Pycnidia semi-immersed in thallus, white. Conidia curved to sigmoid, 0-3-septate, 20-35 x c. 1 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances; hypothecium with the Arnoldiana-brown pigment.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
Pioneer species
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: absent
Dry submediterranean belt: extremely rare
Humid submediterranean belt: very rare
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
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. On volcanic rocks
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. On volcanic rocks
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. On volcanic rocks
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. On volcanic rocks
Author: André Aptroot. Source: http://www.tropicallichens.net/ CC BY-SA-NC
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
Pioneer species
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: absent
Dry submediterranean belt: extremely rare
Humid submediterranean belt: very rare
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
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. On volcanic rocks
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. On volcanic rocks
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. On volcanic rocks
Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. On volcanic rocks
