Russula ionochlora, commonly known as the Oilslick Brittlegill, is a species of mushroom in the Russulaceae family. It is often found in broadleaf woodlands, particularly under oaks and beeches, and is fairly common throughout Britain and Ireland.
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Distribution
Locally frequent
Habitat
In woodlands, usually associated with Fagus and sometimes Quercus
Associates
Fagus, Quercus
Conservation
Cap
Dry, rather matt. Flesh pale pink were eaten by slugs
| Colour | |
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| Shape | Convex, Depressed, Expanded |
| Width | 4.5 - 8 cm |
| Peeling | 1/2 |
Gills
Forking at the base
| Colour | |
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| Spacing | crowded |
Flesh
| Taste | Mild to acrid in young gills |
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Stem
Firm, white to faintly lilac flushed
| Colour | |
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| Shape | Cylindric |
Macrochemicals
FeSO4 deep rust-pink. Guaiac slowly positive
Spores
With low isolated warts 0.2 - 0.5 μm high
| Colour | |
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| Shape | Subglobose |
| Ornamentation | Warty |
| Size | 06.5-7.5 x 4.7-6 μm |
Microscopic Features
Dermatocystidia common, cylindric to sub-clavate, sometimes capitate, 4.5 - 7.5 μm wide
| Dermatocystidia | Clavate, Cylindrical, Capitate |
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Classification
- ↳ Phylum: Basidiomycota
- ↳ Subphylum: Agaricomycotina
- ↳ Class: Agaricomycetes
- ↳ Order: Russulales
- ↳ Family: Russulaceae
- ↳ Genus: Russula
Synonyms
- Russula grisea sensu auct. p.p.
- Russula grisea var. ionochlora (Romagn.) Romagn.
- Russula grisea var. ionochlora (Romagn.) Romagn. comb. inval.
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.
