The Yellow Bolete (Neoboletus praestigiator) is a chunky bolete with a reddish-brown, velvety cap and pores that range from scarlet and orange to yellow. Its stout yellow stem is covered in coarse red to orange flecks, and the flesh is bright yellow. Like its close relatives, it turns blue very quickly when cut or bruised. It grows with both broadleaf and conifer trees and has a long season, from late spring into early winter.
This group of red-pored boletes has been renamed several times, and older books may list similar fungi as Boletus erythropus or Boletus luridiformis. The Lurid Bolete (Suillellus luridus) has a red net on the stem rather than flecks, and the Devil's Bolete (Rubroboletus satanas) has a pale cap. Red-pored boletes should only be eaten on expert identification.
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Distribution
Widespread and common.
Habitat
Occurs with deciduous and coniferous trees.
Etymology
Neoboletus means 'new Boletus', as the genus was separated from Boletus in 2014 on DNA evidence. praestigiator is Latin for 'juggler' or 'trickster'.
Cap
Cap 5-12 cm across, reddish-brown, convex becoming flatter with age. The surface is velvety, becoming smoother and shinier as it ages, and bruises dark greyish-blue when handled.
| Colour | |
|---|---|
| Shape | Convex, Flattened |
| Surface | Smooth |
| Width | 5 - 12 cm |
| Margin | Smooth |
| Bruising |
Pores
Scarlet to orange, with yellow tones; bruising blue when touched.
| Colour | |
|---|---|
| Bruising |
Tubes
| Colour |
|---|
Flesh
Lemon-yellow, turning blue when cut.
| Colour | |
|---|---|
| Taste | Slightly acid |
Stem
Stem 7-15 cm long and 20-40 mm wide, clavate and yellow, with large red to orange floccules (small woolly tufts) over much of its length. It is paler towards the apex and bruises dark greyish-blue.
| Colour | |
|---|---|
| Height | 7 - 15 cm |
| Width | 20 - 40 mm |
| Shape | Clavate |
| Bruising |
Spores
| Colour | |
|---|---|
| Shape | Subfusiform |
| Size | 12-18.5 x 4-6.5 μm |
Classification
- ↳ Phylum: Basidiomycota
- ↳ Subphylum: Agaricomycotina
- ↳ Class: Agaricomycetes
- ↳ Subclass: Agaricomycetidae
- ↳ Order: Boletales
- ↳ Family: Boletaceae
- ↳ Genus: Neoboletus
Synonyms
- Boletus erythropus (Fr.) Krombh.
- Boletus erythropus sensu auct. Brit.
- Boletus erythropus sensu auct. mult.
- Boletus erythropus var. erythropus Pers.
- Boletus erythropus var. immutatus (Pegler & A.E. Hills) Philipp & Kärcher
- Boletus erythropus var. immutatus Pegler & A.E. Hills
- Boletus erythropus var. immutatus Pegler & A.E. Hills ined.
- Boletus immutatus (Pegler & A.E. Hills) A.E. Hills & Watling
- Boletus junquilleus sensu Reid [Fung. Rar. Icon. Col. 3], sensu auct. mult.
- Boletus luridiformis Rostk.
- Boletus luridiformis var. immutatus Pegler & A.E. Hills
- Boletus luridiformis var. luridiformis Rostk.
- Boletus luridus var. erythropus (Pers.) Fr.
- Boletus luridus var. erythropus Fr.
- Boletus miniatoporus Secr.
- Boletus pseudosulphureus Kallenb.
- Neoboletus erythropus (Pers.) C. Hahn
- Neoboletus immutatus (Pegler & A.E. Hills) Blanco-Dios
- Neoboletus luridiformis (Rostk.) Gelardi, Simonini & Vizzini
- Neoboletus pseudosulphureus (Kallenb.) Klofac
- Sutorius luridiformis (Rostk.) G. Wu & Zhu L. Yang
Reference Sources
G. Kibby (2017) British Boletes with keys to species. Geoffrey Kibby.
T. Læssøe, J. H. Peterson (2019) Fungi of Temperate Europe Vol. 1. Princeton University Press.
Genus Neoboletus
No other species found in this genus.
