Singular pycnidium
A reproductive structure superficially they look like perithecia often appearing a black spots, raised or not. However they can be very inconspicuous. From a technical perpsective they are defined as lacking spores contained in asci. Instead they have hundreds of free spores. These spores are then called conidia.

I need to get a good photo to show pycnidia on Xanthomendoza, which threw me for a loop at first. They are little raised orange dots. One could be forgiven for thinking they are developing apothecia.