Boletus regius

Today we are going to talk about a species of mushroom that is unmistakable. It is the Boletus regius. It is also known by the name of the royal mushroom. It is unmistakable given that it has a reddish or pink color in its hat and a lemon yellow color in both the foot and the pores. It is called by different names such as madeirudo in Galician, onddo erregea, in Basque, mataparent reial, in Catalan, and Pugigons, in Aragonese.

In this article we are going to tell you everything you need to know about Boletus regius.

Main features

His hat has the typical shape that all species of the genus Boletus possess. At first it is hemispherical alive evolving towards a convex shape. There are some occasions when it can be turned into a nearly flat hat. The surface of the entire skin of this fungus is uneven. We can frequently find some dents that do not indicate that the fungus is in bad condition. It is just part of its texture.

It is quite large, measuring up to 18 centimeters. It has a lot of meat and is consistent. As for its cuticle, it is totally separable from the meat and with a more or less intense pink color, sometimes turning purple. The base of this hat is slightly velvety. This is what gives it a very particular color and why it is usually unmistakable. As they grow, it is normal to see their skin crack, especially if the environment in which they are growing does not have enough moisture.

The tubes that it has in its hymenium have a nice or lemon yellow color and are approximately 5 to 10 millimeters long. The pores are quite small in size and circular in shape. As fungi develop to adulthood, their color becomes autonomous greenish and their pores become slightly larger.

It is a species of the genus Boletus that does not blue when touched or cut. Although there are some people who claim that it is and they blue, but they do it very slightly. It has a foot of a fairly short but robust or resistant. It has a lemon yellow color just like the pores. It is only 5 to 10 centimeters long and 2 to 6 centimeters in diameter. It is quite frequent that it is attacked by larvae both inside and outside and they cause pink spots to appear.

Finally, its meat is yellow and quite thick. The greatest degree of thickness is found in the foot. It has a quite pleasant and mild smell and is quite famous for the taste it has. It is used in gastronomy because its delicious flavor is reminiscent of hazelnuts.

Ecology and range of Boletus regius

The Boletus regius appear in late summer and even mid-autumn. This is so as long as the autumns are quite rainy but hot. They do not tolerate too much cold, so we classify this species of fungus as thermophilic. The hottest summers and high years are those that profess even greater growth of this species.

It is a mycorrhizal fungus of flat-leaf trees. We can find them in forests where oak trees abound. It is also associated with holm oak forests although not so abundant. Among the oaks in which we can find the Boletus regius the most frequently is Quercus pyrenaica.

It grows mostly on siliceous soils and can also grow under other oak species such as Quercus petrea and Quercus robur. Regarding its area of ​​distribution, it is mostly found in the north of the peninsula, Sistema Central, Sistema Ibérico, the Pyrenees and the southwest of the peninsula. Where it is most abundant is in Palencia, Zamora, León, Salamanca and Ávila. However, in Catalonia some beech trees only appear sporadically in association. In the Sierra de Guadarrama we can find some specimens under the oak groves. But these should not be collected because they are not edible.

Edibility and confusions of Boletus regius

The reddish or pink color that it has in its hat can lead to confusion as with the one with the Boletus satanas. To avoid these confusions, you have to pay close attention to verify that the Boletus satanas is a poisonous fungus and has this red color on its feet and pores, while the Boletus regius has a yellow color. The main difference is that the hat of the Boletus satanas is white or cream, while that of the Boletus regius is reddish or pink.

Another one of the confusions that it can have is that it is similar to the Boletus pseudoregius. This specimen is softly blue when cut and the hat is slightly paler in color. It is perhaps the biggest confusion you can have. However, it is not dangerous to confuse it as this specimen is also a good edible. The difference can also be rewritten in that the Boletus pseudoregius grows preferably in cork oak forests, while the Boletus regius did so in oak forests.

It also resembles the Boletus speciosus which has the redder cuticle and is also blue at the hat cut. When the base is cut it becomes more reddened. This species appears more in beech forests than in oak forests. Neither is there to be your confusion as this is also a good edible.

Finally, it can also be confused with the Boletus appendiculatus. This species has a brown cuticle and is also blue when pressed.

As for edibility it is excellent. It is at the same level as mushrooms of the Boletus genus such as Edulis. It is a gastronomic delicacy widely used in many dishes. It is mainly used as a garnish in dishes whose main food is meat. It should be noted that the foot is a bit hard and it is drunk to prepare in a different way than the hat.

As a curiosity, we can say that, being a rare species in some parts of the peninsula, there are administrations that are in charge of controlling and restricting its collection. In the hottest years it is when it becomes a more abundant species than others.

I hope that with this information you can learn more about the Boletus regius and can recognize it for collection.

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