ITALIC 8.0

Protoblastenia rupestris subsp. rhodothecia Cl. Roux

Bull. Soc. Linn. Provence, 54: 121, 2003.

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Distribution:

Description: Thallus crustose, episubstratic, finely rimose to areolate, grey to olivaceous brown, the areoles angular, flat to slightly convex, up to 0.5 mm wide. Apothecia frequent, scattered to crowded, sessile and not constricted at base, (0.3-)0.4-0.7(-0.8) mm across, blood-red, flat to usually moderately convex, K+ red to violet, the margin indistinct, becoming excluded. Proper exciple thin, colourless to patchily pale orange, with parallel-radiating hyphae; epithecium orange to brown-orange, with granular crystals reacting K+ purple-red, N-; hymenium colourless to pale yellow, 70-120 µm high; paraphyses coherent, branched and anastomosing, 2-4 µm thick, the apical cells slightly swollen; hypothecium purple-red, patchily pigmented. Asci 8-spored, clavate, with a well-developed, amyloid tholus containing a more intensely amyloid, indistinct tube structure, without an ocular chamber, approximating the Porpidia- or Psora-types. Ascospores 1-celled, hyaline, ellipsoid to ovoid, (9-)11-14(-17) x (5-)6-8(-9) µm, without a distinct perispore. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; apothecia K+ purple-red. Chemistry: apothecia with anthraquinones.

Note: on superficially decalcified calcareous rocks (ecology similar to that of Stenhammarella turgida) in alpine environments; recorded with certainty only from France, but perhaps not recognised elsewhere; to be looked for in the Italian Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model

INDEX FUNGORUM GBIF