Lecidea silacea (Hoffm.) Ach.
Meth. Lich.: 48, 1803. Basionym: Patellaria silacea Hoffm. - Descr. Adumb. Plant. Lich., 1, 4: 89, 1790.
Synonyms: Lecidea subsilacea Nyl.; Lecidella silacea (Hoffm.) Stein; Psora tabacina Ramond ex DC. non auct.
Description: Thallus crustose, episubstratic, rather thick, areolate-verrucose, ochre to rust-red, without a distinct prothallus, the areoles convex to bullate, 0.3-1(-1.5) mm wide, matt. Medulla white, I+ blue. Apothecia lecideine, black, 0.5-1.5(-2) mm across, arising between the areoles, sessile and constricted at base, with a flat to convex disc and a usually persistent, sometimes finally excluded, raised, often sinuous proper margin. Proper exciple with a thick, brown-black to green-black cortex reacting N+ purple, more or less colourless within; epithecium bright blue-green or green-black, N+ purple; hymenium colourless of pale green in upper part, 40-70 µm high; paraphyses sparingly branched and anastomosing, 1.5-2 µm thick at mid-level, the apical cell to 5 µm wide; subhymenium pale blue-green, well-differentiated from the pale to dark brown, sometimes substipitate hypothecium. Ąsci 8-spored, clavate, Lecidea-type. Ascospores 1-celled, hyaline, ellipsoid to broadly ellipsoid, (7-)8-15(-17) x 4.5-6(-7) µm, 1.6-2 times as long as wide. Pycnidia dark. Conidia bacilliform 8-12 x c. 1 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances, or sometimes with porphyrilic acid, rarely with low amounts of stictic or norstictic acids.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Species of metal-rich rocks
Commonnes-rarity: (info)
Alpine belt: very rare
Subalpine belt: rare
Montane belt: very rare
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

Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005

Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005

Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecidea_silacea.htm
France, 12/7/2012 - session Pyrénées-Orientales

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Felix Schumm - CC BY-SA 4.0
[775], Lichenes Bohemoslovakiae. Ad saxa schistosa ferruginosa. Sudeti
occid. (Krkonoše): in valle Ob dul, alt 1000 m. Leg. V. Kuták,
1933, det. V. Kuták.

Felix Schumm - CC BY-SA 4.0
[775], Lichenes Bohemoslovakiae. Ad saxa schistosa ferruginosa. Sudeti
occid. (Krkonoše): in valle Ob dul, alt 1000 m. Leg. V. Kuták,
1933, det. V. Kuták.

Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, ad saxa Basaltina M. Belocca Pr. Ver. 1855

Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, ad saxa Basaltina M. Belocca Pr. Ver. 1855
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Species of metal-rich rocks
Commonnes-rarity: (info)
Alpine belt: very rare
Subalpine belt: rare
Montane belt: very rare
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

Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005

Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005

Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecidea_silacea.htm
France, 12/7/2012 - session Pyrénées-Orientales

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=890&lang=en
France, Lac d'Estaing

Felix Schumm - CC BY-SA 4.0
[775], Lichenes Bohemoslovakiae. Ad saxa schistosa ferruginosa. Sudeti occid. (Krkonoše): in valle Ob dul, alt 1000 m. Leg. V. Kuták, 1933, det. V. Kuták.

Felix Schumm - CC BY-SA 4.0
[775], Lichenes Bohemoslovakiae. Ad saxa schistosa ferruginosa. Sudeti occid. (Krkonoše): in valle Ob dul, alt 1000 m. Leg. V. Kuták, 1933, det. V. Kuták.

Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, ad saxa Basaltina M. Belocca Pr. Ver. 1855
