The mushroom Russula gracillima, commonly known as the slender brittlegill, is a member of the genus Russula, whose members are commonly known as brittlegills. It is a small, pale, long stemmed brittlegill associated mainly with birch and is occasional in Europe, Asia, and North America.
Source: Wikipedia
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Distribution
Widespread but not common
Habitat
In damp Betula woods
Associates
Betula
Conservation
Cap
Fragile, pale pastel colours, darker in the middle, may be very washed-out when wet
| Colour | |
|---|---|
| Shape | Convex, Depressed |
| Surface | Smooth |
| Width | 2 - 5 cm |
| Margin | Sulcate |
| Peeling | 7/10 |
Gills
Broad and fragile
| Colour | |
|---|---|
| Spacing | subdistant |
Flesh
| Colour | |
|---|---|
| Taste | Sometimes a little acrid |
Stem
Long and elegant, usually narrowing at the apex and often part or fully flushed pink. Staining yellow-brown or greyish when wet
| Colour | |
|---|---|
| Texture | Smooth |
| Shape | Cylindric |
Macrochemicals
| FeSO4 | |
|---|---|
| Guaiac |
Spores
Isolated blunt warts up to 1μm high
| Colour | |
|---|---|
| Type | amyloid |
| Shape | Broadly ellipsoid |
| Ornamentation | Warty |
| Size | 7-8.5 x 5-6.5 μm |
Microscopic Features
Dermatocystidia abundant. 5-10μm, 0-1 septate
| Dermatocystidia | Club-shaped (Clavate), Fusiform |
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Classification
- ↳ Phylum: Basidiomycota
- ↳ Subphylum: Agaricomycotina
- ↳ Class: Agaricomycetes
- ↳ Order: Russulales
- ↳ Family: Russulaceae
- ↳ Genus: Russula
Synonyms
- Russula gracilis sensu auct. brit.
- Russula gracillima J. Schaeff.
Reference Sources
T. Læssøe, J. H. Peterson (2019) Fungi of Temperate Europe Vol. 1. Princeton University Press.
G. Kibby (2021) The Genus Russula in Great Britain. Geoffrey Kibby.
