Fragiliporia fragilis is a white rot fungus with soft fruit bodies that become powdery and brittle when bruised. It measures up to long by wide by thick at its centre. It has a monomitic hyphal system, containing only generative hyphae that have clamp connections. Its spores are sausage-shaped (allantoid), thin-walled, and hyaline, typically measuring 4.8–5.4 by 1.7–2 μm.
