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
Felix Schumm - CC BY-SA 4.0
VZ1713], Magna Britannia. Anglia. West Sussex, prope Midhurst,
Rogate, Rogate Field Centre, 60 m. Ad lateres muri loco umbroso. Leg.
B. J. Coppins, 30.5.1973, det. B. J. Coppins et A. Vezda. EX A. VEZDA:
LICHENES SELECTI EXSICCATI NR. 1713.
Felix Schumm - CC BY-SA 4.0
VZ1713], Magna Britannia. Anglia. West Sussex, prope Midhurst,
Rogate, Rogate Field Centre, 60 m. Ad lateres muri loco umbroso. Leg.
B. J. Coppins, 30.5.1973, det. B. J. Coppins et A. Vezda. EX A. VEZDA:
LICHENES SELECTI EXSICCATI NR. 1713.
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
Felix Schumm - CC BY-SA 4.0
VZ1713], Magna Britannia. Anglia. West Sussex, prope Midhurst, Rogate, Rogate Field Centre, 60 m. Ad lateres muri loco umbroso. Leg. B. J. Coppins, 30.5.1973, det. B. J. Coppins et A. Vezda. EX A. VEZDA: LICHENES SELECTI EXSICCATI NR. 1713.
