ITALIC 8.0

Lecidea tessellata var. caesia (Anzi) Arnold

Arnold, Verh. zool.-bot. Ges. Wien, 39: 264, 1889. Basionym: Lecidea spilota var. caesia Anzi - Cat. Lich. Sondr.: 80, 1860.

Synonyms: Biatora casimirii Müll. Arg.; Lecidea azurea Kremp.; Lecidea casimirii (Müll. Arg.) Müll. Arg.; Lecidea injuncta Nyl.; Lecidella azurea (Kremp.) Körb.

Distribution: N - Frl (Tretiach & Hafellner 2000), TAA (Hertel & Schuhwerk 2010, Nascimbene & al. 2022), Lomb (Anzi Lich. Lang. 125: Hertel 1995), Piem (Isocrono & al. 2004), Emil (Fariselli & al. 2020), Lig (TSB 33416).

Description: Thallus crustose, episubstratic, 1.5-3(-5) mm thick in central parts, forming small patches, sometimes delimited by a grey prothallus, finely rimose-areolate, the areoles contiguous, flat to slightly convex, greyish white to pale bluish grey. Cortex 10-17 µm thick; medulla thick, white, I+ deep blue. Apothecia lecideine, black, mostly developed between the areoles, usually clustered, 0.3-1.8 mm across, with a black, flat to slightly convex, epruinose or weakly pruinose disc, and a thin, often soon excluded proper margin. Proper exciple poorly developed, with a brownish rim, colourless within; epithecium olive-brown, grey or green-black, 10-15 µm high; hymenium colourless or pale green, 40-75 µm high, I+ blue; paraphyses simple or rarely branched, usually not anastomosing, 1.8-2.7 µm thick at mid-level, the apical cell 3.5-6 µm wide; hypothecium colourless to very pale green or yellowish brown. Asci 8-spored, clavate, Lecidea-type. Ascospores 1-celled, hyaline, ellipsoid to broadly ellipsoid, 8-11 x 4.5-6 µm, not halonate, rather thick-walled. Pycnidia semi-immersed, black, the ostiolar region often elongate and almost lirelliform. Conidia bacilliform, 7-19 x 1-1.5 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-. Chemistry: confluentic acid (major).

Note: on calciferous siliceous rocks, dolomite, superficially decalcified, hard limestone rocks near and above treeline, starting the life-cycle on other crustose lichens, especially Aspicilia spp.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras crustose lichens

Commonnes-rarity: (info)

Alpine belt: rather rare

Subalpine belt: rather common

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

Index Fungorum GBIF

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (33416)
2003/03/12

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecidea_tessellata.htm

France, 24/7/2014 - session AFL dans le Mercatour - Alpes-de-Haute-Provence

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecidea_tessellata.htm

France, 24/7/2014 - session AFL dans le Mercatour - Alpes-de-Haute-Provence

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecidea_tessellata.htm

France, 24/7/2014 - session AFL dans le Mercatour - Alpes-de-Haute-Provence