ITALIC 8.0

Acarospora charidema (D.S. Clemente) Llimona

in Vězda, Lichenes Selecti Exsiccati, Fasc. 51: 5 (no. 1267), 1974. Basionym: Lecanora charidema D.S. Clemente - in Colmeiro, Enum. Cript. España Portugal: 123, 1867.

Synonyms:

Distribution:

Description: Thallus crustose, episubstratic, consisting of scattered to clustered, bright yellow, somehow glossy rounded to angular, strongly convex (but flattened or concave at top), 0.4-6 mm wide, up to 1 mm thick, marginally often striate areoles. Apothecia 1-20 per areole, at first punctiform, then expanded, round to elliptical in outline, 0.1-1 mm across, with a ochre-yellow disc and a usually poorly evident, thin thalline margin. Epithecium yellowish; hymenium colourless 120-150 µm high, the hymenial gel hemiamyloid, I+ light blue fading to light red; paraphyses 2-2.5 µm thick at base, the apical cells hardly swollen; hypothecium colourless. Asci 100-200-spored, clavate, the apical dome K/I-. Ascospores 1-celled, hyaline, globose or subglobose, 3-5 x 2-4 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV+ orange. Chemistry: rhizocarpic acid.

Note: a pioneer species of base-rich siliceous rocks in warm-dry habitats, usually growing on steeply inclined to rain-sheltered, sunny surfaces, known from the southern Iberian Peninsula and Morocco. To be looked for in the driest parts of Mediterranean Italy, especially in Sicily and Sardinia.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

In underhangs rarely wetted by rain

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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Predictive model

Felix Schumm - CC BY-SA 4.0

[VZ1267], Hispania. Alméria, Las Negras, Cerro de las Estorvillas, 75 m. Ad lavam. Leg. X. Llimona, 15.05.1973 - Ex A. VEZDA: LICHENES SELECTI EXSICCATI NR. 1267

Felix Schumm - CC BY-SA 4.0

[VZ1267], Hispania. Alméria, Las Negras, Cerro de las Estorvillas, 75 m. Ad lavam. Leg. X. Llimona, 15.05.1973 - Ex A. VEZDA: LICHENES SELECTI EXSICCATI NR. 1267

United States National Herbarium - Smithsonian (US:Lichens) Collector: X. Llimona Locality: Spain, Almeria, Las Negras - CC BY-NC 3.0 - Source: Consortium of Lichen Herbaria (2023) http//:lichenportal.org/portal/index.php. Accessed on December 09.