ITALIC 8.0

Lecanora strobilinoides Giralt & Gómez-Bolea

Lichenologist, 23: 107, 1991.

Synonyms:

Distribution:

Description: Thallus crustose, thinly episubstratic, whitish yellow, pale yellowish green or pale blue-green, usually continuous, granulose to pulverulent-farinose, ecorticate, often delimited by a black prothallus, the surface developing needle-like crystals in the herbarium. Apothecia lecanorine, crowded, rounded or frequently deformed by mutual compression, sessile, 0.5-1 mm across, with an initially concave, later flat to convex, whitish yellow to pale yellow-brown, usually slightly pruinose disc and an initially thick, prominent and granulose, later thinner and pulverulent-farinose, never completely excluded thalline margin. Thalline exciple ecorticate, with many small, irregular crystals soluble in N and insoluble in K; proper exciple very thin, colourless; epithecium with coarse, yellowish brown granules soluble in N and in K; hymenium colourless, (30-)50-70 µm high, I+ blue; paraphyses not strongly coherent, simple or sparingly branched and anastomosing, the apical cells not swollen; hypothecium colourless. Asci (12-)16(-32)-spored, clavate, Lecanora-type. Ascospores 1-celled (a few often 1-septate), hyaline, ellipsoid, (7.5-)8-10(-12) x 3-3.5(-4) µm. Photobiont chlorococcoid. Spot tests: thallus K+ yellow-brown, C-, KC+ yellowish, P-. Chemistry: usnic acid and zeorin.

Note: a rare, but perhaps overlooked species of the L. symmicta group, growing on the acid bark of evergreen trees and shrubs, or or pine cones, in the Mediterranean zone, hitherto known only from Catalonia (Spain). To be looked for in Mediterranean Italy. For further details see Giralt & Gómez-Bolea (1991) and Li & al. (2023).

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

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

María José Chesa Marro – CC BY-NC

Spain, Catalunya

María José Chesa Marro – CC BY-NC

Spain, Catalunya