Rugosomyces obscurissimus

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Rugosomyces obscurissimus

15 November 2021 Brookwood, Surrey. Photograph copyright Leif Goodwin.

Synonymns

Calocybe obscurissima

Cap

Convex, expanding wih age, felty, reddish brown sometimes with a violaceous tint, about 25 to 40 mm across

Gills

Emarginate with a decurrent tooth, broad, fairly crowded, white to pale yellow

Stem

Equal, fibrous, brown, whitish to pale violet towards the base, white mycelium visible at base

Flesh

Firm, whitish

Smell

Mealy

Taste

Mealy

Season

Autumn

Distribution

Rarely recorded

Habitat

On soil in deciduous and coniferous woods

Spore Print

White

Microscopic Features

Spores ellipsoidal to spindle shaped (5-6) x (3-4.5) µm2

Edibility

Unknown

Notes

The specimens shown were DNA sequenced by Eric Janke in collaboration with the BMS, confirming the original identification. Although once considered by some authorities as a colour form of Rugosomyces ionides, DNA sequencing has shown it to be a distinct species. The Genband sequence number is OQ133619.

Rugosomyces obscurissimus

Spores in Melzer's solution viewed with a x100 immersion objective. 15 November 2021 Brookwood, Surrey. Photograph copyright Leif Goodwin.