Lecidea tessellata Flörke var. tessellata

Deutsch. Lich.: 64, 1819.
Synonyms: Lecidea cyanea sensu Th. Fr. non (Ach.) Röhl.; Lecidea homalodes Nyl.; Lecidea magna Lynge; Lecidea occidentalis Lynge; Lecidea spilota Fr.; Lecidea spilota var. intricata (Hepp) Anzi?; Lecidella spilota (Fr.) Körb.
Description: Thallus crustose, episubstratic, greyish white to pale bluish grey, sometimes spottily rust-red on iron-containing rocks, 0.2-2(-3) mm thick, thicker in central parts, forming small patches, often delimited by a dark prothallus, finely rimose-areolate, the areoles contiguous, flat to slightly convex. Cortex 10-17 µm thick; medulla thick, white, I+ deep blue. Apothecia lecideine, black, adpressed, mostly developed between the areoles, usually clustered, rounded to usually angular in outline, 0.3-2(-3) mm across, with a black, epruinose or weakly pruinose, flat to very slightly convex 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, 40-80 µm high, I+ blue; paraphyses simple or rarely sparingly branched, usually not anastomosing, 1.8-2.7 µm thick at mid-level, the apical cell 3.5-6 µm wide; hypothecium colourless to pale brown. Asci 8-spored, clavate, Lecidea-type. Ascospores 1-celled, hyaline, ellipsoid to broadly ellipsoid, (6-)7.5-11(-13) x 3.5-7 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), 2’-0-methylperlatolic acid.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
paras crustose lichens

Commonnes-rarity: (info)

Alpine belt: extremely common
Subalpine belt: common
Montane belt: rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

absent
extremely rare
very rare
rare
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common
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extremely common
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Predictive map

P.L. Nimis CC BY-SA 4.0
TSB 33965


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33965)
2001/12/08


Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33965)
2001/12/08