Octospora sp.

The fruitbody is disk-like to somewhat cup-like, without a stem and up to 15 millimetres in diameter, though in most species the fruitbodies are no more than a few millimetres in diameter. The margin is raised and is toothed or frill-like edge. Orange is by far the most most common colour though there are a few species with yellow, pinkish or brownish fruitbodies.

The fruitbodies appear on the ground amongst mosses and the species in this genus are reported to be bryophyte parasites.

You can find out more about this genus at: http://octospora.de/

Look-alikes

A large Octospora (say with a diameter approaching a centimetre) is probably unmistakeable. That's not so with small fruitbodies. For example you find the same type of toothed/frilly margin in Lamprospora (where the fruitbodies measure up to 5 millimetres and are orange) and microscopic features separate Octospora from Lamprospora.