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Taeniolella pertusariicola on Varicellaria hemisphaerica?

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  • December 4, 2025 at 3:57 pm #33119
    JennyS

      A continuing search for lichenicolous fungi on old specimens from SW Ireland has thrown up another I’ve not come across before – Taeniolella pertusariicola on Varicellaria hemisphaerica?

      Poor images and hard to focus on as I couldn’t get the exposure right but the conidiophores were c6-8 µm wide, to 7-septate and conidia appeared to be 0-3 septate. (Plenty of specimen survived investigation)

      z Taeniolella pertusariicola Q 100209 003.jpg

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      z Taeniolella pertusariicola Q 100209 006.jpg

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      z Taeniolella pertusariicola Q 100209 009.jpg

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      z Taeniolella pertusariicola Q 100209 010.jpg

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      z Taeniolella pertusariicola Q 100209 014-2.jpg

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      December 4, 2025 at 5:43 pm #46771
      Neil Sanderson
      Senior Moderator

        Jenny

        You need to compare with the anamorph of Roselliniopsis tartaricola as well; both are in the Flora of Lichenicolous Fungi 2. Roselliniopsis tartaricola, is frequent on Varicellaria hemisphaerica, and I think your specimen might be that. The conidiphore walls look too smooth for Taeniolella pertusariicola and on your fifth picture I can see masses on top some of the conidiphores which look like what FLF2 calls “apical phialidic synanamorph”, which are typical of Roselliniopsis tartaricola.

        Neil

        December 4, 2025 at 6:22 pm #46772
        JennyS

          Ah, thanks Neil – I checked the FLF2 Taeniolella pertusariicola description but not Roselliniopsis tartaricola.

          Are these below what is meant by “apical phialidic synanamorph”?

          z Q Roselliniopsis tartaricola 100209-3.jpg

          [attachment=0]z Q Roselliniopsis tartaricola 100209-3.jpg[/attachment]

          December 4, 2025 at 9:07 pm #46773
          Neil Sanderson
          Senior Moderator

            I assume these are what is meant, certain not seen those on Taeniolella pertusariicola.

            z Taeniolella pertusariicola Q 100209 010.jpg

            [attachment=0]z Taeniolella pertusariicola Q 100209 010.jpg[/attachment]
            Arrowed on your earlier picture

            Neil

            December 5, 2025 at 3:51 pm #46774
            JennyS

              And a slightly better image of the “apical phialidic synanamorph”

              (I think I need to swallow a taxonomic dictionary to make sense of the descriptions in LF1 and 2!)

              z Roselliniopsis tartaricola 100209 029.jpg

              [attachment=1]z Roselliniopsis tartaricola 100209 029.jpg[/attachment]

              z Roselliniopsis tartaricola 100209 041.jpg

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              December 5, 2025 at 4:22 pm #46775
              Neil Sanderson
              Senior Moderator

                Jenny

                Thanks that is something useful to look out for on Taeniolella pertusariicola/Roselliniopsis tartaricola like infections on Pertusaria s. lat. in future

                Neil

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