Hi,
Found this lichen literally outside my back door on a tall old Victorian chimney pot, so on clay. When I first saw it I thought – that looks like Porina aenea, but it’s on clay. The perithecia are small, no more than 0.3mm wide, on a very thin green thallus. All tests were negative. The spores were 3 septate, colourless and an average size of 17um X 4um. The asci seemed to have distinctive blunt ends. But as a beginner to this I’m often not sure totally what I’m looking at. The first section is in water and the rest are in K.
It keyed out as Porina chlorotica in LGB&I. Would people say this is correct?
Thank you
SylviaD
