Lecanographa amylacea (Pers.) Egea & Torrente (trebouxioid)
Bibl. Lichenol., 54: 122, 1994. Basionym: Lichen amylaceus Ehrh. ex Pers. - Plant. Crypt. Exsicc.: 303, 1793.
Synonyms: Buellia violaceofusca G. Thor & Muhr
Description: This lichen appears in two very different morphotypes, depending on the photobiont, this description refers to the form with a trebouxioid photobiont: Thallus crustose, endosubstratic or episubstratic and then granular, up to 0.15 mm thick, pale grey to almost white, with scattered, maculiform, 0.15-0.6 mm wide, often confluent soralia which are dark dirty brown with a violet tinge, (greenish when abraded), the soredia 15-20(-23) µm wide, with brown, 1.8-2.5 µm thick outer hyphae, the inner colourless hyphae 1.3-1.7(-2) µm thick. Apothecia and pycnidia not known. Photobiont chlorococcoid. Spot tests: all negative, except the pigmented outer hyphae of the soredia, which react K+ greenish grey, N+ red-brown: medulla UV+ citrine-glaucous. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
In underhangs rarely wetted by rain
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
Felix Schumm - CC BY-SA 4.0
[VZR441], Austria. Voralbergia, Rätikon, Schruns, in monte Golmer
Joches, 2100 m. Ad truncum Fagi silvaticae vetustum. Leg. A. Vezda
& V. Wirth, 27.07.1986, dipl. det. G. Thor. EX A. VEZDA: LICHENES
RARIORES EXSICCATI NR. 441. As Buellia violaceofusca
Felix Schumm - CC BY-SA 4.0
[VZR441], Austria. Voralbergia, Rätikon, Schruns, in monte Golmer
Joches, 2100 m. Ad truncum Fagi silvaticae vetustum. Leg. A. Vezda
& V. Wirth, 27.07.1986, dipl. det. G. Thor. EX A. VEZDA: LICHENES
RARIORES EXSICCATI NR. 441. As Buellia violaceofusca
P.L. Nimis CC BY-SA 4.0
TSB 33866
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33866)
2003/03/17
soralia
Source: Pykälä, J. & Myllys, L. 2023. Additions to the lichen flora of Finland. XI. Graphis Scripta 35 (5): 66–74. Oslo. ISSN 2002-4495. - CC BY-4.0
Pykälä 59304 (H). Scale bar = 0.5 mm.
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
In underhangs rarely wetted by rain
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
Felix Schumm - CC BY-SA 4.0
[VZR441], Austria. Voralbergia, Rätikon, Schruns, in monte Golmer Joches, 2100 m. Ad truncum Fagi silvaticae vetustum. Leg. A. Vezda & V. Wirth, 27.07.1986, dipl. det. G. Thor. EX A. VEZDA: LICHENES RARIORES EXSICCATI NR. 441. As Buellia violaceofusca
Felix Schumm - CC BY-SA 4.0
[VZR441], Austria. Voralbergia, Rätikon, Schruns, in monte Golmer Joches, 2100 m. Ad truncum Fagi silvaticae vetustum. Leg. A. Vezda & V. Wirth, 27.07.1986, dipl. det. G. Thor. EX A. VEZDA: LICHENES RARIORES EXSICCATI NR. 441. As Buellia violaceofusca
P.L. Nimis CC BY-SA 4.0
TSB 33866
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33866)
2003/03/17
soralia
