JennyS
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I posted the images on the Facebook ‘Lichenicolous fungi 2.0’ page and have just had a reply there from Valerii Darmostuk:
Quote:Interesting, I’m going to Lichenodiplis poeltii following the key from Tsurykau & Etayo (2017) 10.1017/S0024282916000530. This was described from Australia and is still known only from the type locality (the protologue attached).
[attachment=0]Lichenodiplis poeltii 2.jpg[/attachment] Hi Neil,there seems to be a green alga over-growing the area round the perithecia and pycnidia, and the same on other parts of the twig too 
[attachment=0]zz algae An vir thall 240719-1.jpg[/attachment] Thanks for posting the micrographs from your specimen Neil, and might you have any suggestion of what mine might be if its not Anisomeridium viridescens? Photograph below shows where both the first and second group of micrographs were from (the second with both spores and macroconidia).
[attachment=0]zz Anisomeridium viridescens Q 240719 008.jpg[/attachment] And from a bit further along the same twig both perithecia and pycnidia present, spores 13-16 x 3.5-4.5 µm, macroconidia 10-12x 2-2.5 µm. 
[attachment=2]w Anisomeridium viridescens 2 240719-10b.jpg[/attachment] Macroconidia
[attachment=1]w Anisomeridium viridescens 2 240719-4 con.jpg[/attachment] 
[attachment=0]w Anisomeridium viridescens 2 240719-3 con.jpg[/attachment] Thanks for the suggestion but the underside of the lobes and the rhizines are black which would rule out Phaephyscia nigricans which has Quote:“underside whitish, pinkish or pale brown-white, with sparse, generally pale rhizines”
[attachment=0]Phaeophyscia 240712 007.jpg[/attachment]
