The Nidulariaceae is a small family of fungi consisting of 5 genera. They are commonly known as the bird's nest
fungi as the fungus resembles a bird's nest with small eggs. The fungus has the general shape of a cup with a
variable number of peridia which contain the basidia and spores. The spores are developed internally inside
peridioles and rain drops hitting the cup would displace the peridia dispersing the spores.
The fungi are cosmopolitan and saprobic (living off dead matter). They are commonly found on twigs and other
dead matter, often on dead parts of Compositae.
Separation of the genera is based on morphological differences including the colour of the peridia.