ITALIC 8.0

Puttea margaritella (Hulting) S. Stenroos & Huhtinen

in Stenroos & al., Bryologist, 112, 3: 550, 2009. Basionym: Lecidea margaritella Hulting - Bot. Notiser: 304, 1910

Synonyms: Fellhanera margaritella (Hulting) Hafellner

Distribution:

Description: Thallus crustose, mostly endosubstratic and poorly evident, consisting of a thin layer of delicate hyphae and small algal cells, developing on the leaflets of Ptilidium pulcherrimum. Apothecia biatorine, whitish or cream-coloured, very rarely medium brown when old, up to 0.4 mm across, adnate to constricted at base, with a convex disc, the proper margin level with disc, barely visible only in very young apothecia. Proper exciple colourless in outer part, covered in a continuous layer of crystals soluble in K, the hyphae richly branched, closely septate with narrow lumina, 1-2 μm thick, running parallel and perpendicularly from the medullary exciple of gelatinized textura intricata; epithecium colourless or very pale brown, covered with a gelatinous layer topped with a layer of hyaline crystals soluble in K; hymenium colourless; paraphyses branched and anastomosing, c. 1 μm thick, equalling the asci in length; hypothecium colourless. Asci 8-spored, clavate, with a K/I+ blue tholus including a thin, darker K/I+ blue tubular ring-structure, Micarea-type. Ascospores 1-celled, hyaline, ellipsoid-subfusiform, 5.3-7.3 x 2.3-3 μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-,C-, P-, UV-. Chemistry: an unknown substance.

Note: on the leafy liverwort Ptilidium pulcherrimum, clearly damaging the host, rarely spreading to adjacent wood or bark; widespread in Europe from the boreal to the temperate-montane zone; in the Alps so far only recorded from Austria and Switzerland, but likely to occur elsewhere in coniferous forests. To be looked for in the Italian Alps.

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

Index Fungorum GBIF

P.L. Nimis CC BY-SA 04

TSB 41227

P.L. Nimis CC BY-SA 04

TSB 41227

P.L. Nimis CC BY-SA 04

TSB 41227

P.L. Nimis CC BY-SA 04

TSB 41227