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Nectria (order Hypocreales) A genus of fungi whose brightly coloured fruiting structures are common on twigs and bark. N. cinnabarina forms pale pink conidial pustules measuring 1–2 mm across, which are replaced later in the year by red perithecial pustules. Some species can cause plant diseases (e.g. N. galligena causes apple canker). See also BEECH BARK DISEASE and CORAL SPOT.

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