The king stropharia can grow to  high with a reddish-brown convex to flattening cap up to  across, the size leading to another colloquial name godzilla mushroom. The gills are initially pale, then grey, and finally dark purple-brown in colour.
The king stropharia fungus is notable for its remarkable size, as evidenced by a reddish-brown, convex to flat cap that can reach up to  across. This species has earned the nickname "Godzilla mushroom" due to its impressive dimensions. The gills exhibit color variations from pale to grey and ultimately dark purple-brown.