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 can attain considerable size, boasting a reddish-brown, dome-shaped to flat cap that spans up to  across. This species is colloquially known as the "Godzilla mushroom" due to its impressive dimensions. The gills start off pale, transition to grey, and ultimately darken to purple-brown.