Coscinocladium gaditanum (Clemente) A. Crespo, Llimona & D. Hawksw.

in Crespo & al., Taxon, 53: 409, 2004. Basionym: Variolaria gaditana Clemente - Ens. Veg. Andalucia: 295, 1807.
Synonyms: Buellia lisbonensis (Samp.) Werner; Coscinocladium occidentale Kunze; Lecanora lisbonensis Samp.; Placodium lisbonensis (Samp.) Klem.; Psoroma lisbonense (Samp.) Samp.; Ricasolia cesatii var. plumbea Bagl.; Solenopsora cesatii var. plumbea (Bagl.) Zahlbr.
Distribution: C - Sar (Crespo & al. 2004). S - Si (Nimis & al. 1994, Ottonello & Salone 1994, Crespo & al. 2004).
Description: Thallus crustose-placodioid, bluish white-pruinose, sorediate, forming orbicular, often confluent rosettes up to 3(-5) cm in diam., often covering large surfaces. Central parts areolate, marginal lobes contiguous, 1-5 mm long, 0.3-1 mm wide. Soralia small (c. 0.2 mm across) circular, well-delimited by a thin margin, often raised, with granulose soredia more or less concolourous with thallus. Apothecia unknown. Pycnidia dark, immersed, globose, with pleurogenous conidogenous cells. Conidia cylindrical, 3.8-5 x c. 1.3 μm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a mainly western, Mediterranean-Atlantic species growing on soft calcareous rocks wetted by rain and exposed to humid maritime winds, mostly on horizontal surfaces, often forming large monospecific stands. It is locally abundant along the western coasts of Sicilia and Sardegna.
Growth form: Crustose placodiomorph
Substrata: rocks
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)
Taxon bound to maritime-coastal situations

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: rare
Dry mediterranean belt: extremely rare


pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Manuel Gil
Spain, Canary Islands, Lanzarote, Tiagua


Jennifer Fiorentino
Malta



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (38266)
2008.02.25


Manuel Gil
Spain, Canary Islands, Lanzarote


Jennifer Fiorentino
Malta


Jennifer Fiorentino
Malta



P.L. Nimis CC BY-SA 4.0
TSB 13053



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43768



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43768



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43768



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43768



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43768