Yellow Swamp Brittlegill (Russula Claroflava) – Identification

Yellow Swamp Russula / Summer / Autumn / Edible

Scientific Name

Russula Claroflava




Wet boggy ground in mixed woodland, particularly with birch.


A bright yellow mushroom often shiny on the top that is found in very wet woodland. It is deemed on of the best eating Russula’s with a nutty flavour and a pepper bite simillar to that of rocket. 

Identifying Features for Yellow Swamp Brittlegill:


Bright egg yellow and usually shiny. Very sticky to the touch.

This image was created by user Ron Pastorino (Ronpast) at Mushroom Observer, a source for mycological images.You can contact this user here.English | español | français | italiano | македонски | മലയാളം | português | +/−, CC BY-SA 3.0 <>, via Wikimedia Commons


White and not tapering. Should snap like a piece of chalk.

Lebrac, CC BY-SA 3.0 <>, via Wikimedia Commons


Gills white and is attached to the stem. Crowded. Bruising grey. Brittle to the touch. Adnexed and sometimes free.

Free Gills

Adnexed gills

Adnexed Gill

Jerzy Opioła, CC BY-SA 4.0 <>, via Wikimedia Commons


indistinctive Mushroom smell


Ocher to cream


A good fleshy eating mushroom

In food

Good to eat with a slight peppery heat and nutty flavour.


found from July until November in boggy woodland .

Known hazards

Other Russulas.

Potential lookalikes

Russula ochroleuca, but this is edible, if a bit acrid, and has a duller yellow cap.
The Geranium Scented Russula (R.fellea) is grubbier yellow with a smell of geraniums and is incredibly hot when placed on the tongue.

Follow the four step Russula identification process:

-Snap – Does the stem snap like a piece of chalk?
-Flick – Do the gills break when you flick them gently?
-Peel – Does the skin on the cap peel away?
-Taste–  this should only be done when you have gone through the other steps and are confident that you have a Russula. If a tiny amount placed on the tongue a chilli like burn or tingle means the mushroom is poisonous but a pleasant mushroomy taste means it is edible.

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