Pluteus semibulbosus

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Pluteus semibulbosus

11 November 2025 New Forest, Hampshire. Photograph copyright Leif Goodwin.

Synonymns

Pluteus inquilinus

Cap

Convex, expanding with age, smooth, sometimes with veins at the centre, margin lined, initially brown, then whitish from the margin inwards, centre sometimes remaining pale brown, to about 3 cm across

Gills

Free, crowded, broad, white then pale pink

Stem

Equal, sometimes bulbous at the base, whitish, lined lengthwise

Flesh

Whitish

Smell

Indistinct

Taste

Indistinct

Season

Late summer to autumn

Distribution

Rarely reported, but quite common in parts of the New Forest

Habitat

On dead wood from deciduous trees, favouring beech

Spore Print

Pink

Microscopic Features

Spores sub-spherical, smooth (6.5-8) x (5.5-6.5) µm2. Basidia club shaped, four spored. Gill edge cystidia mostly flask shaped, some club shaped. Gill face cystidia flask shaped. Cap cuticle cellular.

Edibility

Unknown

Notes

See also white forms of Pluteus plautus

Pluteus semibulbosus

Spores in Congo Red solution viewed with a 100X immersion objective. 11 November 2025 New Forest, Hampshire. Photograph copyright Leif Goodwin.

Pluteus semibulbosus

Gill edge cystidia in Congo Red solution viewed with a 40X objective. 11 November 2025 New Forest, Hampshire. Photograph copyright Leif Goodwin.

Pluteus semibulbosus

Cuticle hyphae in Congo Red solution viewed with a 40X objective. 11 November 2025 New Forest, Hampshire. Photograph copyright Leif Goodwin.

Pluteus semibulbosus

10 October 2020 Hampshire. Photograph copyright Leif Goodwin.

Pluteus semibulbosus

Spores in Congo Red solution viewed with a 100X immersion objective. 10 October 2020 Hampshire. Photograph copyright Leif Goodwin.

Pluteus semibulbosus

Gill edge cystidia in Congo Red solution viewed with a 40X objective. 10 October 2020 Hampshire. Photograph copyright Leif Goodwin.

Pluteus semibulbosus

Gill face cystidia in Congo Red solution viewed with a 40X objective. 10 October 2020 Hampshire. Photograph copyright Leif Goodwin.

Pluteus semibulbosus

Cuticle hyphae in Congo Red solution viewed with a 40X objective. 10 October 2020 Hampshire. Photograph copyright Leif Goodwin.