ITALIC 8.0

Vezdaea dawsoniae Döbbeler

Herzogia 5, 1-2: 96, 1979

Synonyms:

Distribution:

Description: Thallus crustose, thin and filmy, hardly visible, brownish, minutely granular but without goniocysts, doubtfully lichenized. Apothecia short-lived, without a proper margin, single, 0.3-1 mm across, turbinate when young, distinctly stalked when mature , the stipe 20-30 µm thick, composed of subparallel hyphae (apothecia recalling those of a minute calicioid lichen), the disc becoming convex to globose, pale flesh-coloured to orange-brown. Proper exciple absent; hymenium lacking gelatine, consisting of asci which are sometimes intermixed with a few, slender, branched and anastomosing paraphyses confined to the lower part of hymenium, not entwining the asci. Asci 8-spored, cylindrical, thick-walled, with a thick I+ blue apex (except for an apical pore), 29-33 x 10-15 μm. Ascospores 1-septate,with slightly unequal cells, hyaline, narrowly ellipsoid, (13-)15-18 x 3-4 μm, with rounded ends and a smooth wall. Photobiont perhaps absent or chlorococcoid. Spot tests: all negative. Chemistry: without lichen substances.

Note: a species resembling V. stipitata, based on a type from Papua New Guinea and reported from the Caucasus and the French Alps (conspecificity of European specimens in need of re-evaluation), growing on leaves and on the uppermost parts of branches of evergreen shrubs (e.g. Buxus) in the understory of broad-leaved forests in very humid, winter-mild sites.

Growth form: Crustose

Substrata: bark and leaves

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

pH of the substrata:

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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