Amanita vaginata - Grisette Amanita vaginata - Grisette

Taxonomy

Phylum: Basidiomycota

Class: Agaricomycetes

Order: Agaricales

Family: Amanitaceae

Unlike many other Amanita species, Amanita vaginata, the Grisette, does not have a ring on its stem. Grisettes are not poisonous, but they are easily confused with Deathcaps.

The term 'grisette' comes from France, where the word gris means grey and was also applied to a coarse grey woollen material. The name was by association given to young working-class French women who wore grey dresses made from this material.

Watermarked preview (new window) of Photolibrary image FN321f_amanita_vaginata.jpg (Large file)...

Watermarked preview (new window) of Photolibrary image FN322f_amanita_vaginata.jpg (Large file)...

Identification guide

Cap

Cap

5 - 10cm diameter; grey, normally retaining no velar remains. Initially egg-shaped, the cap expands  to become flat but always with a small raised central area (an umbo). The edge of the cap is striated (with comb-like radial ridges). Below the pellicle (skin of the cap) the flesh is white and firm.

Gills

Gills

White, adnexed (only slightly attached to the stem) or sometimes free; crowded.

Stem

Stem

12 - 20cm long and 1 - 1.5cm in diameter, tapering only slightly (narrower near the cap); white or tinged with the cap colour. The stipe usually becomes hollow as the fruitbody matures. 

Volva

Volva

There is no stem ring on this Amanita species; however, at the base of the stipe there is a large white sack-like volva.

Spore print

White.

Odour/taste

Not distinctive.

Habitat

Found in deciduous forests and occasionally in mixed woodland.

Season

July to October.

Occurrence

Infrequent.

Similar species

Amanita ceciliae often has a more orange-tinged cap with grey veil fragments, and it has a distinctive snakeskin pattern on the stem.

Amanita caesarea (Caesar's Mushroom) is rarely if ever found in southern Europe; its cap is brilliant orange with a striated margin, and the stipe is yellow.

Amanita crocea has a yellowish-orange cap with an apricot tinge at the centre. It has cream rather than white gills, and a sweet smell and a nutty taste.