Armillaria tabescens

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Armillaria tabescens

14 October 2025 Near Brockenhurst, New Forest, Hampshire. Photograph copyright Leif Goodwin.

Cap

Initially convex, becoming flattened to funnel shaped with a central bump, surface tawny brown, cinnamon brown or yellow brown, covered with fine scales, margin sometimes lined, sometimes pale, to about 6 cm across

Gills

Adnate to slightly decurrent, flesh coloured, then pinkish brown

Stem

Tapering to the apex, whitish when young, then pale brown at the apex, darker brown towards the base, ring absent

Flesh

Whitish, thin, brittle

Smell

Strong

Taste

Astringent to mild

Season

Summer to early autumn

Distribution

Infrequent

Habitat

At the base of living and dead deciduous trees, especially oak

Spore Print

Pale cream

Microscopic Features

Spores ellipsoidal, apiculus prominant, smooth (6-9) x (4-5) µm2. Basidia 2 and 4 spored. Cystidia absent.

Edibility

Edible when cooked

Notes

This species is very similar to other Armillaria species, but it is readily distinguished by the lack of a ring

Armillaria tabescens

Spores in Congo Red solution viewed with a 100X immersion objective. 14 October 2025 Near Brockenhurst, New Forest, Hampshire. Photograph copyright Leif Goodwin.