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Possible Hypotrachyna lividescens

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  • April 9, 2026 at 8:10 pm #33165
    SylviaD
    Participant

      Hi,

      Today Peter Bisset, Ken Sandall and myself found what we think could possibly be Hypotrachyna lividescens on Iping Common, Sussex. Photos below hopefully show its features. The Oak was quite young and the lichen was on a low branch.

      It had a very light grey-coloured thallus. The pale grey/green soredia were around the apices and just below as well as laminal. Its C reaction on the soralia was quite distinctive starting out red but soon changing to be more orange. The cortex was K yellow. The underside was dark with a chestnut edge and the rhizines appeared to be dichotomously branched, although it’s tricky to see on the photo below.

      Is it likely to be Hypotrachyna lividescens or something else?

      Thanks,

      Sylvia

      April 10, 2026 at 9:57 am #46927
      Neil Sanderson
      Senior Moderator

        Sylvia

        Yes definately Hypotrachyna lividescens, a nice mature thallus, excellant find and suggests this species is on the move. I have now found it in three locations in the New Forest, so four in Hampshire.

        2026-04-01-08.JPG

        [attachment=0]2026-04-01-08.JPG[/attachment]
        A mature thallus on a Hawthorn branch at Balmer Lawn, New Forest, Hampshire

        Neil

        April 10, 2026 at 12:49 pm #46928
        SylviaD
        Participant

          Thank you Neil, that’s great. Hopefully I’ll also start to see a few more across Sussex now.

          All the best,

          Sylvia

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