Boletellus

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Boletellus
Boletellus ananas 45219.jpg
Boletellus ananas
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Boletaceae
Genus: Boletellus
Murrill (1909)
Type species
Boletellus ananas
(M.A.Curtis) Murrill (1909)

Boletellus is a genus of fungi in the family Boletaceae. [1] The genus has a widespread distribution, especially in subtropical regions, and contains about 50 species. [2] The genus was first described by American mycologist William Alphonso Murrill in 1909. [3] The genus name means "small Boletus". [4]

Contents

Description

According to Murrill's definition of the genus, species of Boletellus have an annual fruit body that grows on wood and a stem that is centrally placed. The cap surface is floccose-verrucose (covered with tufts of hairs or warts) and yellowish. The fruit body flesh is light colored and fleshy. The tubes on the underside of the cap are angular, depressed, yellowish, and covered with a partial veil. The spores of Boletellus are oblong to ellipsoid, smooth, and rust-colored. The stem is solid (i.e., not hollow), white, and not reticulate. [3] Additional characteristics of the genus have been delineated or amended since its original description over 100 years ago: spores have longitudinal ridges or "wings", are inamyloid, and rarely dextrinoid (staining deep reddish to reddish brown in Melzer's reagent). Species usually have hymenial cystidia present, and clamp connections are typically absent (with the exception of B. fibuliger ). [5]

Murrill placed Boletellus ananas (formerly Boletus ananas) as the sole and type species. [3] Singer's fourth edition (1986) of his Agaricales in Modern Taxonomy included 33 species, which were classified into sections depending on moisture content, scaliness of the cap or amount of ornamentation on the stem. [6] Although some species of Boletellus are rated as edible, none are considered choice. [4]

Similar genera

In general, Boletes usually have smooth spores, but Boletellus, Austroboletus , Strobilomyces , and Heimioporus are exceptions to this. Hemioporus species have pitted or reticulate spores, Strobilomyces species have spiny and reticulate spores, and Austroboletus species have pitted spores, in comparison to the ridged spores of Boletellus species. [7]

Species

B. ananaeceps Boletellus ananiceps 722860.jpg
B. ananaeceps
B. obscurecoccineus Unidentified Fungus 5621.jpg
B. obscurecoccineus

Here is a list of species currently accepted in the genus Boletellus: [5]

Related Research Articles

<i>Tylopilus</i> Genus of fungi

Tylopilus is a genus of over 100 species of mycorrhizal bolete fungi separated from Boletus. Its best known member is the bitter bolete, the only species found in Europe. More species are found in North America, such as the edible species T. alboater. Australia is another continent where many species are found. All members of the genus form mycorrhizal relationships with trees. Members of the genus are distinguished by their pinkish pore surfaces.

<i>Xerocomus</i> Genus of fungi

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.

<i>Aureoboletus</i> Genus of fungi

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.

<i>Fistulinella</i> Genus of fungi

Fistulinella is a genus of bolete fungi in the family Boletaceae. The genus has a pantropical distribution, and contains 15 species. Fistulinella was circumscribed by German mycologist Paul Christoph Hennings in 1901.

<i>Boletellus obscurecoccineus</i> Species of fungus

Boletellus obscurecoccineus, known as the rhubarb bolete, is a species of fungus in the family Boletaceae, found in Australia, New Guinea, Java, Borneo, Japan, Korea, and Taiwan. It is a distinctive and colourful bolete of the forest floor.

<i>Phylloporus</i> Genus of fungi

Phylloporus is a genus of fungi in the family Boletaceae. The genus has a cosmopolitan distribution, and contains about 50 species, mostly in tropical areas.

<i>Pulveroboletus</i> Genus of fungi

Pulveroboletus is a genus of fungi in the family Boletaceae. The genus has a cosmopolitan distribution and contains 41 species.

<i>Bothia</i> Genus of fungi

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.

<i>Phlebopus</i> Genus of fungi

Phlebopus is a genus of fungi in the family Boletinellaceae. The genus has a widespread distribution in subtropical and pantropical regions, and contains 12 species. The species are saprobic, with some possibly able to form mycorrhizae with exotic trees in certain conditions. It contains the gigantic Phlebopus marginatus, the cap of which can reach 1 m (3.3 ft) in diameter.

<i>Aureoboletus mirabilis</i> Species of fungus

Aureoboletus mirabilis, commonly known as the admirable bolete, the bragger's bolete, and the velvet top, is an edible species of fungus in the Boletaceae mushroom family. The fruit body has several characteristics with which it may be identified: a dark reddish-brown cap; yellow to greenish-yellow pores on the undersurface of the cap; and a reddish-brown stem with long narrow reticulations. Aureoboletus mirabilis is found in coniferous forests along the Pacific Coast of North America, and in Asia. Unusual for boletes, A. mirabilis sometimes appears to fruit on the wood or woody debris of Hemlock trees, suggesting a saprobic lifestyle. Despite the occasional appearances to the contrary, Aureoboletus mirabilis is mycorrhizal, and forms a close association with the tree's roots.

<i>Boletellus ananas</i> Species of fungus

Boletellus ananas, commonly known as the pineapple bolete, is a mushroom in the family Boletaceae, and the type species of the genus Boletellus. It is distributed in southeastern North America, northeastern South America, Asia, and New Zealand, where it grows scattered or in groups on the ground, often at the base of oak and pine trees. The fruit body is characterized by the reddish-pink scales on the cap that are often found hanging from the edge. The pore surface on the underside of the cap is made of irregular or angular pores up to 2 mm wide that bruise a blue color. It is yellow when young but ages to a deep olive-brown color. Microscopically, B. ananas is distinguished by large spores with cross striae on the ridges and spirally encrusted hyphae in the marginal appendiculae and flesh of the stem. Previously known as Boletus ananas and Boletus coccinea, the species was given its current name by William Alphonso Murrill in 1909. Two varieties of Boletellus ananas have been described. Like many other boletes, this species is considered edible, but it is not recommended for consumption.

Boletellus piakaii is a species of fungus in the family Boletaceae. It was found in Guyana and described in 2008.

<i>Aureoboletus auriflammeus</i> Species of fungus

Aureoboletus auriflammeus, commonly known as the flaming gold bolete, is a species of bolete fungus in the family Boletaceae. Described as new to science in 1872, it is found in eastern North America, where it grows in a mycorrhizal association with oaks. The caps of the fruit bodies are golden orange, with a yellow pore surface on the underside, and a reticulated (network-like) stem. The edibility of the mushroom is not known.

<i>Aureoboletus projectellus</i> Species of fungus

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.

<i>Xerocomellus</i> Genus of fungi

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.

<span class="mw-page-title-main">Boletineae</span> Suborder of fungi

The Boletineae are a suborder of the fungal order Boletales. Families in the Boletineae include the Boletaceae and the Paxillaceae.

<i>Austroboletus subflavidus</i> Species of fungus

Austroboletus subflavidus is a species of bolete fungus in the family Boletaceae. It is found in eastern North America, where it fruits near oak and pine trees. Originally described as a species of Tylopilus by American mycologist William Murrill in 1938, it was transferred to the genus Austroboletus by Carl B. Wolfe in 1980. The fruit body has a white to yellowish convex to flattened cap measuring 3–10 cm (1.2–3.9 in) in diameter. The pores on the cap underside, which measure about 1 mm wide, are initially white to grayish before becoming pinkish. The coarsely reticulate and pitted stipe measures 4.5–14.5 cm (1.8–5.7 in) long by 0.7–3 cm (0.3–1.2 in). The spore print is reddish brown; spores are spindle-shaped (fusoid) with dimensions of 15–20 by 6–9 μm.

<i>Sutorius eximius</i> Species of fungus

Sutorius eximius, commonly known as the lilac-brown bolete, is a species of fungus in the family Boletaceae. This bolete produces fruit bodies that are dark purple to chocolate brown in color with a smooth cap, a finely scaly stipe, and a reddish-brown spore print. The tiny pores on the cap underside are chocolate to violet brown. It is widely distributed, having been recorded on North America, South America, and Asia, where it grows in a mycorrhizal relationship with both coniferous and deciduous trees.

<i>Aureoboletus betula</i> Species of fungus

Aureoboletus betula is a species of mushroom producing fungus in the family Boletaceae. It is commonly known as the shaggy stalked bolete.

References

  1. Binder M, Hibbett DS (2006). "Molecular systematics and biological diversification of Boletales". Mycologia. 98 (6): 971–81. doi:10.3852/mycologia.98.6.971. PMID   17486973.
  2. Kirk PM, Cannon PF, Minter DW, Stalpers JA (2008). Dictionary of the Fungi (10th ed.). Wallingford: CABI. p.  97. ISBN   978-0-85199-826-8.
  3. 1 2 3 Murrill WA. (1909). "The Boletaceae of North America: I". Mycologia. 1 (1). Mycological Society of America: 4–18. doi:10.2307/3753167. JSTOR   3753167.
  4. 1 2 Bessette AE, Roody WC, Bessette AR (2000). North American Boletes. Syracuse, New York: Syracuse University Press. ISBN   978-0-8156-0588-1.
  5. 1 2 Halling R. "Digest of Boletellus". Surveys and Revisions in Boletineae. New York Botanical Garden. Retrieved 2010-10-05.
  6. Singer R. (1986). The Agaricales in Modern Taxonomy (4th ed.). Koenigstein: Koeltz Scientific Books. ISBN   3-87429-254-1.
  7. Kuo M. (March 2005). "Boletellus, Heimioporus, and Austroboletus". MushroomExpert.Com. Retrieved 2010-10-05.
  8. 1 2 3 Halling RE, Fechner N, Nuhn M, Osmundson T, Soytong K, Arora D, Binder M, Hibbett D (2015). "Evolutionary relationships of Heimioporus and Boletellus (Boletales), with an emphasis on Australian taxa including new species and new combinations in Aureoboletus, Hemileccinum and Xerocomus". Australian Systematic Botany. 28 (1): 1–22. doi:10.1071/SB14049.