Leccinum aerugineum

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Leccinum aerugineum

14 October 2010 Surrey. Photograph copyright Leif Goodwin

Species

Leccinum aerugineum

Synonyms

Leccinum cyaneobasileucum, Leccinum bruneogriseolum

Cap

Convex, smooth, dry to slightly greasy, colour very variable, white, pale pink, to pale brown, bruising pink to brown, to about 12 cm across

Pores

Whitish, bruising cream, pale pink or pale brown

Stem

Equal or club shaped, white, with white scabers, darkening with age, bruising pinkish, sometimes with blue green stains at the base

Flesh

Firm to soft, white. No colour change when KOH or ammonia solution is applied.

Smell

Indistinct

Taste

Indistinct

Season

Late summer to autumn

Distribution

Frequent

Habitat

With birch

Spore Print

Pale brown

Microscopic Features

Spores ellipsoidal to spindle-shaped, (14-21) x (5-7) µm2. Facial and marginal cystidia spindle shaped, often with elongated tips. Cap cuticle composed of filamentous hyphae, some dark coloured, often branched, with many short terminating strands, hyphae easily breaking away (see photo). Stem cuticle composed of parallel hyphae, with numerous spindle shaped, flask shaped and club shaped cystidia.

Edibility

Edible, poor

Notes

This species is extremely variable and includes forms that were previously divided into three species. Darker coloured specimens are readily confused with Leccinum scabrum. Pale specimens may be confused with Leccinum holopus. The specimen shown was identified with the aid of British Fungus Flora volume 1.

Additional Photographs

Leccinum aerugineum

Stem cystidia seen through a microscope. 14 October 2010 Surrey. Photograph copyright Leif Goodwin


Leccinum aerugineum

Cuticle hyphae seen through a microscope. 14 October 2010 Surrey. Photograph copyright Leif Goodwin