Blue Rounded







Stropharia caerula

Meaning belted.

Means sky blue.


When seen fresh it is a striking species, but ideal specimens can be harder to find than slightly 'worn' ones. Fresh it has a wonderful blue-green colouring on the cap which should have small white woolly scales around the edge. The stem appears pale, almost white when it emerges too. Even within a few hours these fade, the scales can disappear from the cap, the stem shows more of the flesh colour and even the cap begins to fade to a yellow-green colour, in some instances with no blue-green colour on the cap at all - although the stem retains some. Often confused with the Verdegris Agaric (Stropharia aeruginosa).


Not distinctive.



Habitat & Distribution

Woodland edges, grassland and frequently on mulched flower beds and gardens. It is common across the UK, and probably often mis-reported as the Verdegris Agaric (Stropharia aeruginosa).


Poisonous. It is also known to contain psilocybin properties which are hallucinogenic, it was also cause gaustric upset.  

Confusion Species

There are two species this could be confused with. The first is the Verdegris Agaric (Stropharia aeruginosa), the main feature to look for is a white edge to gills, which the Verdegris Agaric has, the Blue Roundhead does not. 

The Peppery Roundhead (Stropharia pseudocyanea) is very similar occuring in grassland, but has a distinctive peppery smell, which the Blue Roundhead does not. 


7-9 x 4-5µ, smooth, ellipsoid.

Spore Print Colour


Tel. 07533 132 129 


Manchester, Cheshire, Deeside & North Wales

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