Abrothallus prodiens

Not in Fife, but not far away, this lichenicolous fungi was found at Red Moss reserve in the Lothians - by far the most southerly occurrence as per NBN and not known away from the eastern highlands in Great Britain

https://data.nbn.org.uk/Taxa/NHMSYS0000361129

There are a number of species of Abrothallus which seem to be quite host specific. Obviously something worth looking out for

http://www.lichenicolous.net/

(ID credit BJC)