Xerocomus is a genus of poroid fungi related to Boletus. Many mycologists did not originally recognize the distinction between the two genera and placed Xerocomus taxa in genus Boletus. However, several molecular phylogenetic studies have demonstrated that Xerocomus is a heterogeneous genus of polyphyletic origin, which has resulted in further division of Xerocomus into Xerocomellus and Hemileccinum. The members of the genus Xerocomellus are more closely related to Boletus than true Xerocomus is, which is relatively distantly related to Boletus and more closely related to Phylloporus. Other former Xerocomus species have since been moved to Aureoboletus, Imleria, Hortiboletus and Rheubarbariboletus.
Xerocomellus chrysenteron, formerly known as Boletus chrysenteron or Xerocomus chrysenteron, is a small, edible, wild mushroom in the family Boletaceae. These mushrooms have tubes and pores instead of gills beneath their caps. It is commonly known as the red cracking bolete.
Hortiboletus rubellus, commonly known as the ruby bolete, is a small, dainty, brightly coloured member of the family Boletaceae, with a reddish cap and stipe, and yellow pores. Like many boletes, it stains blue when cut or bruised. It is found in deciduous woodland in autumn. There is some question over its edibility, and it is reportedly of poor quality with a taste of soap. Until 2015, the species was known as Boletus rubellus.
Xerocomus subtomentosus, commonly known as suede bolete, brown and yellow bolete , boring brown bolete or yellow-cracked bolete, is a species of bolete fungus in the family Boletaceae. The fungus was initially described by Carl Linnaeus in 1753 and known for many years as Boletus subtomentosus. It is edible, though not as highly regarded as other bolete mushrooms.
Aureoboletus is a genus of bolete fungi in the family Boletaceae. It was circumscribed by Czech mycologist Zdeněk Pouzar in 1957. A taxonomic monograph was published in 2010 by Wolfgang Klofac.
Boletellus is a genus of fungi in the family Boletaceae. The genus has a widespread distribution, especially in subtropical regions, and contains about 50 species. The genus was first described by American mycologist William Alphonso Murrill in 1909. The genus name means "small Boletus".
Bothia is a fungal genus in the family Boletaceae. A monotypic genus, it contains the single species Bothia castanella, a bolete mushroom first described scientifically in 1900 from collections made in New Jersey. Found in the eastern United States, Costa Rica, China, and Taiwan, it grows in a mycorrhizal association with oak trees. Its fruit body is chestnut brown, the cap is smooth and dry, and the underside of the cap has radially elongated tubes. The spore deposit is yellow-brown. The edibility of the mushroom is unknown. Historically, its unique combination of morphological features resulted in the transfer of B. castanella to six different Boletaceae genera. Molecular phylogenetic analysis, published in 2007, demonstrated that the species was genetically unique enough to warrant placement in its own genus.
Xerocomus illudens is a species of bolete fungus in the family Boletaceae. Described as new to science in 1898, it is found in Asia and North America, where it grows in a mycorrhizal association with oak.
Aureoboletus projectellus is a species of bolete fungus in the family Boletaceae. Found in North America, and recently in Europe, it grows in a mycorrhizal association with pine trees.
Xerocomellus is a genus of fungi in the family Boletaceae. The genus, as it was described in 2008, contained 12 species. However X. rubellus and X. engelii were transferred to the new genus Hortiboletus and X. armeniacus was transferred to the new genus Rheubarbariboletus in 2015. Molecular analysis supports the distinction of Xerocomellus species from Boletus and Xerocomus, within which these species were formerly contained. Xerocomellus in fact is only distantly related to Xerocomus and is most closely related to Tylopilus, Boletus sensu stricto, Porphyrellus, Strobilomyces, and Xanthoconium.
Buchwaldoboletus lignicola is a species of bolete fungus in the family Boletaceae native to Europe and North America. Found on wood, it is actually parasitic on the fungus Phaeolus schweinitzii. It has a convex yellow- to rusty brown cap, yellow to yellow-brown pores and stipe, and a brown spore print. Its edibility is unknown.
Rheubarbariboletus armeniacus is a small mushroom in the family Boletaceae native to Europe. It was formerly placed in the genera Boletus, Xerocomus, and Xerocomellus. It acquired its current name when it was transferred to genus Rheubarbariboletus in 2015.
Hemileccinum is a genus of fungi in the family Boletaceae. It was erected in 2008 by Josef Šutara to contain two species united by a number of shared morphological features: H. depilatum and the type H. impolitum. In 2014, Wu et al. found it to be distinct from other bolete genera in a molecular phylogenetic study and found it to be most closely related to Corneroboletus. In 2015, H. subglabripes was transferred to Hemileccinum from Boletus based on DNA evidence, while subsequent studies further confirmed the monophyly of the genus.
Parvixerocomus is a fungal genus in the family Boletaceae. It was circumscribed by Chinese mycologists Gang Wu and Zhu L. Yang in 2015 with Parvixerocomus pseudoaokii from Guangdong province in southern China as the type species. Parvixerocomus aokii of southern China, including Hainan province, and Japan, was also transferred to the genus from Boletus that same year. The erection of Parvixerocomus follows recent molecular studies that outlined a new phylogenetic framework for the Boletaceae. The generic name—derived from the Latin stem parvi- ("small") and Xerocomus as the mushrooms resemble small versions of those from the genus Xerocomus.
Hemileccinum impolitum is a basidiomycete fungus of the family Boletaceae, native to Europe. It is commonly referred to as the iodine bolete, because its fruit bodies tend to emit an iodine-like odour when cut, more detectable in the stem base or overripe specimens.
Rheubarbariboletus is a fungal genus in the family Boletaceae. Circumscribed in 2014, it contains two species found in Europe: Rheubarbariboletus persicolor, and the type, R. armeniacus. The generic name is derived from the Latin rheubarbarum, meaning "rhubarb", referring to the color of the flesh at the base of the stipe. The genus is closely related to Xerocomellus, but differs by having smooth spores, the unchanging yellowish to orange-rhubarb coloring of the stipe base, and the distinctive dark-green to black color reaction with iron sulphate on both the surface of the cap and on the flesh of the stipe.
Imleria is a genus of fungi in the family Boletaceae. It was cultivated in 2014 by Alfredo Vizzini as a new genus for what had previously been named Boletus badius or Xerocomus badius. It was placed in its own genus because of its distinct morphological features and because it had previously been found to belong in its own genus in a molecular phylogenetics study by Gelardi et al. (2013). Zhu et al. (2014) placed three more species in Imleria. Species of Imleria which can be found in Europe, North America and Asia. The genus is named in honor of the Belgian mycologist Louis Imler (1900–1993).
Imleria badia, commonly known as the bay bolete, is an edible, pored mushroom found in Eurasia and North America, where it grows in coniferous or mixed woods on the ground or on decaying tree stumps, sometimes in prolific numbers. Both the common and scientific names refer to the bay- or chestnut-coloured cap, which is almost spherical in young specimens before broadening and flattening out to a diameter up to 15 cm (6 in). On the cap underside are small yellowish pores that turn dull blue-grey when bruised. The smooth, cylindrical stipe, measuring 4–9 cm long by 1–2 cm thick, is coloured like the cap, but paler. Some varieties have been described from eastern North America, differing from the main type in both macroscopic and microscopic morphology.
Pulchroboletus is a fungal genus in the family Boletaceae. It was circumscribed in 2014 to contain the species formerly known as Xerocomus roseoalbidus, a rare bolete fungus originally described from Sardinia, Italy. Pulchroboletus roseoalbidus is found in Mediterranean Europe, where it grows in association with oak species and less often Cistus species. In 2017, the species Boletus rubricitrinus was moved to Pulchroboletus. Pulchroboletus rubricitrinus can be found under Quercus in lawns in Florida and Texas.
Alessioporus rubriflavus is a species of fungus in the family Boletaceae. It was described in 2017 as the first North American member of the genus Alessioporus.
