Boletus aereus identification

About mushroom

Boletus aereus, described by some as the Queen Bolete but just lately given the normal name Bronze Bolete in Britain and Ireland, is a most sought-after edible mushroom. It is merely as good as its famous close relative, Boletus edulis (Cep or Cent Bun Bolete) but its flesh is quite firmer. In the pub marketplaces of France, for example, these excellent boletes can be purchased as well as Boletus edulis and Boletus reticulatus, and customers are evenly happy with whichever of the meaty mushroom varieties can be found.

A exceptional find in Ireland and Britain, where it is restricted to southern parts mainly, Boletus aereus is a lot more prevalent in southern European countries.

Commonly bought at the sides, beside strolls or in clearings in oak and beech woodlands, Boletus aereus will berry just a little than boletus edulis later, which looks later than the summertime Bolete relatively, Boletus reticulatus.

Most boletes, and certainly every one of the common ones within Britain and Ireland, are ectomycorrhizal fungi. Which means that they form mutualistic romantic relationships with the main systems of trees and shrubs or shrubs. The fungi help the tree to obtain moisture and essential minerals from the soil, and in exchange the main system of the tree gives energy-rich nutrients, the merchandise of photosynthesis, to the fungal mycelium.

Although most trees and shrubs may survive without their mycorrhizal companions, boletes (and a great many other varieties of forest-floor fungi) cannot endure without trees; subsequently these so-called 'obligately mycorrhizal' fungi do not happen in wide open grassland.

The medical name Boletus aerus started in Jean Baptiste Francois Pierre Bulliard's 1789 descriotipon of the varieties. Synonyms of Boletus aereus includeBoletus mamorensis Redeuilh.

The universal name Boletus comes from the Greek bolos, indicating lump of clay; the foundation of the precise epithet aereus is Latin and means copper or bronze (in shade) - hence the normal name Bronze Bolete. Some individuals make reference to it as the Dark colored Porcini or the Dark Cover Bolete.

Boletus aereus, the dark cep or bronze bolete, is a highly prized and much sought-after edible mushroom in the family Boletaceae.

Dark cigar brown, bay to dark sepia, often dark brick-coloured near the margin, minutely cracking making the surface roughly textured, slightly downy at first then smooth.
Stem 60-80 x 11-12mm, robust, covered with network which is brown near apex, clay pink or buff around the middle and rusty below.
Flesh white, unchanging or becoming dirty vinaceous when bruised.

Taste pleasant, smell strong and earthy. Boletus aereus comes with an earthy smell and a pleasurable mild taste.

Habitat with broad-leaved trees, especially beech and oak. To Oct in Britain and Ireland august, this bolete are available from Oct to Feb in a few elements of southern European countries. ( Season summer to autumn )

Rare. Edible.
Distribution, America and Europe.

First downy but becoming gentle with a finely damaged or granular surface soon, the dark-brown to dark sepia-brown hats of Boletus aereus range between 7 to 20cm size at maturity. The cover margin is a far more reddish brownish than the centre often. When cut, the cover flesh remains white or very gradually converts somewhat purplish usually.

Spores olivaceous snuff-brown, subfusiform, 13,5 - 16 x 4 - 5 µm.

Pores and tubes:
Tubes white to cream, finally sulphur-yellow.
Pores similarly coloured but bruising vinaceous on handling and often flushed rust with age.
The pipes of Boletus aereus (seen when the cover is damaged or chopped up) are white or pale cream, becoming smart sulphur yellow at maturity; they terminate in really small creamy white skin pores that become rust-coloured (see remaining) with years.
When bruised or cut, the skin pores and pipes of Boletus aereus swiftly do not change shade, but after the right time they create a vinaceous tinge.

A fine brown online structure (reticulum) is obvious on the pale darkish track record of the stem surface, darkest on the apex with the bottom and usually relatively paler and pinker near to the inflamed centre of the stem. Sometimes clavate (club-shaped) but more regularly barrel-shaped, the stem of Boletus aereus is 5 to 12cm high or more to 8cm in size at its widest point.
The stem flesh is white and incredibly organization.

Habitat & Ecological role:
Boletus aereus develops on garden soil beneath broadleaf trees and shrubs, beech and oaks notably.

Similar species
Boletus edulis has a pale stem with a white reticulum; its dark brown cover has a whitish marginal region.
Tylopilus felleus has a darker stem reticulum and a pinkish tinge to its skin pores; it has an extremely bitter taste.

Boletus aereus photos

More info about Boletus aereus mushroom

Stem type:
Simple stem
Grows in woods
Grows on the ground
Spore colour:
Cap type:
Convex to shield shaped
Fungus colour:
Normal size:
North America
boleto negro, Schwarzer Steinpilz, Hongo negro, onddobeltz, onto baltza, kaskabeltza, sureny fosc, Bronze-Röhrling
Last modification: 2016-08-29 10:21:39

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