Butyriboletus appendiculatus is an edible pored mushroom that grows under oaks and other broad leaved trees such as beech. It is commonly known as the butter bolete. It often grows in large colonies beneath the oak trees, and is frequently found cohabiting with old oaks in ancient woodland.
Source: Wikipedia
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Distribution
Widespread and fairly common
Habitat
Associated with Quercus and Fagus on acid soils
Associates
Fagus, Quercus
Cap
Slightly overhanging margin
| Colour | |
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| Shape | Convex, Expanded |
| Surface | Fibrillose |
| Width | 6 - 16 cm |
Pores
| Colour | |
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| Bruising |
Flesh
Flushing pale blue in upper half, reddish-brown in base of stem
| Colour | |
|---|---|
| Odour | Slightly pungent of Scleroderma |
| Taste | Mild |
Stem
Yellow reticulation. Usually pointed and flushed red-brown at base
| Colour | |
|---|---|
| Height | 11 - 12.5 cm |
| Width | 34 - 37 mm |
| Shape | Clavate, Cylindric, Tapering |
Macrochemicals
KOH on cuticle and flesh
| KOH |
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Spores
| Colour | |
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| Shape | Subfusiform |
| Ornamentation | Smooth |
| Size | 11-14 x 4.5-5.5 μm |
Classification
- ↳ Phylum: Basidiomycota
- ↳ Subphylum: Agaricomycotina
- ↳ Class: Agaricomycetes
- ↳ Subclass: Agaricomycetidae
- ↳ Order: Boletales
- ↳ Family: Boletaceae
- ↳ Genus: Butyriboletus
Synonyms
- Boletus appendiculatus (Fr.) Secr.
- Boletus appendiculatus Schaeff.
- Boletus edulis f. appendiculatus Fr.
Reference Sources
T. Læssøe, J. H. Peterson (2019) Fungi of Temperate Europe Vol. 1. Princeton University Press.
R. Phillips (2006) Mushrooms. Macmillan.
G. Kibby (2020) Mushrooms and Toadstools of Britain & Europe Vol. 1. Geoffrey Kibby.
Genus Butyriboletus
No other species found in this genus.
