Hi there, hoping for your assistance in suggesting some potential genera or genera-groups to look at, in my quest to ID something that looks like a tiny photo-negative of e.g. Thelomma: A mazaedia with dark exterior and white erumping spore mass. Not had luck yet with various keys and crustose text resources due to the spore mass colour.
... or say if you know if a Cyphelium or similar that has white spore mass at earlier stage aging to black...?
All your ideas would be very welcome - Thanks!
Juliet
Update: Photos attached - ruler marker is 1mm