Suillus

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Suillus
Suillus luteus 2.jpg
Suillus luteus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Suillaceae
Genus: Suillus
Gray (1821)
Type species
Suillus luteus
(L.) Roussel (1821)
Synonyms [1]
  • PinuzzaGray (1821)
  • Boletus sect. Viscipellis Fr. (1838)
  • Euryporus Quél. (1886)
  • Cricunopus P.Karst. (1881)
  • RostkovitesP.Karst. (1881)
  • Viscipellis(Fr.) Quél. (1886)
  • Viscipellis subgen. PeplopusQuél. (1886)
  • Peplopus(Quél.) Quél. ex Moug. & Ferry (1887)
  • IxocomusQuél. (1888)
  • Boletopsis Henn. (1898)
  • SoleniaHill ex Kuntze (1898)
  • Fuscoboletinus Pomerl. & A.H.Sm. (1962)
  • MariaellaŠutara (1987)
  • Gastrosuillus Thiers (1989)

Suillus is a genus of basidiomycete fungi in the family Suillaceae and order Boletales. Species in the genus are associated with trees in the pine family (Pinaceae), and are mostly distributed in temperate locations in the Northern Hemisphere, although some species have been introduced to the Southern Hemisphere. [2]

Contents

Taxonomy

The genus Suillus was first defined by Pier Antonio Micheli in his 1729 work Nova plantarum genera, however it is not valid as it predates the 1753 start of Linnean taxonomy. [3] Fries sanctioned the use by British botanist Samuel Frederick Gray in the first volume of his 1821 work A Natural Arrangement of British Plants. Setting Suillus luteus as the type species, he described the genus as those mushrooms with a centrally placed stipe, a distinct ring, a circular cap, and tubes that are stuck together. [4]

They have been commonly called "slippery jacks" because the cap of the fruit body is sometimes slimy. The genus name is derived from the Latin sus, meaning "pig". Before 1997, the genus Suillus was considered part of the family Boletaceae.

The genus also contains what were known as the larch boletes, several species that were described in the genus Fuscoboletinus. These grow in association with larch or tamarack ( Larix ssp.). Molecular analysis has shown them to not be a monophyletic group and to be mixed in with the Suillus species. [lower-alpha 1]

Description

Structures of the fungi in this genus in common with other members of the order Boletales include the presence of a cylindrical stipe, cap, soft flesh and tubular hymenium. Specific characteristics common to most species in Suillus are the cap cuticle which is often slimy and sticky when moist, the presence of darkly staining, clustered, sterile cells called cystidia that give the tube mouths or the stipe surface a speckled or glandular appearance, spores that are usually cinnamon brown or chocolate brown in mass, and obligate mycorrhizal relationships primarily with members of the Pinaceae, especially with members of the genera Pinus , Larix and Pseudotsuga .

Intra-genus variation may be demonstrated by differences in colour and ornamentation of the cap cuticle, flesh, pores and stipe, the presence of a partial veil in immature forms and annuli thereafter, pore shape and distribution, as well as habitat. The cap cuticle is dark brown in S. brevipes , and yellow in S. grevillei . S. granulatus has a smooth cap cuticle, while that of S. lakei is finely scaly. The pores are bright yellow in S. collinitus , cinnamon in S. variegatus and grey in S. viscidus ; in shape they are round in S. luteus and angular in S. bovinus . The flesh is white to yellow in S. luteus , while it is pallid in S. variegatus with a tendency to turn blue when exposed to air. Young S. luteus and S. grevillei bear partial veils whose remnants remain as annuli hanging from the stipe; in S. granulatus the stipe is bare. S. viscidus and S. grevillei occur under larch (Larix) only, while S. sibiricus is restricted to a few species of 5-needled pine (Pinus).

Habitat and distribution

Species of Suillus are found all over the Northern Hemisphere where members of the tree family Pinaceae can be found. Although a few species are distributed in tropical regions (usually mountainous areas), most are limited to temperate areas. Some species have been introduced adventitiously with pine trees in pine plantations outside the natural area of Pinaceae. [6]

Some Suillus species have entered regional red lists as endangered or vulnerable. Seven European countries have listed S. sibiricus . [7] Individual countries have also listed other species, including S. flavidus , S. tridentinus , S. collinitus , S. plorans and S. lakei. [8]

Uses

Some Suillus species are edible and are highly esteemed, particularly in Slavic countries, where they are generally referred to as butter mushrooms (маслята). They are generally picked as buttons when the flesh is still firm. In some species, the slimy cap coat acts as a purgative when consumed and should be removed before cooking. Species of Suillus have been associated with the term "bolete", given to members of other genera bearing pores, most notably Boletus .

Some species can be used to make mushroom dyes, like S. americanus, S. cothurnatus, S. granulatus, [9] and S. luteus. [10]

Species

The cap underside of Suillus americanus showing angular yellow pores. Suillus americanus 53663.jpg
The cap underside of Suillus americanus showing angular yellow pores.
Suillus bovinus Suillus bovinus Alberto Vazquez.jpg
Suillus bovinus
Suillus brevipes Suillus brevipes 78.jpg
Suillus brevipes
Suillus granulatus Suillus granulatus 1.jpg
Suillus granulatus
Suillus grevillei Suill.grev.jpg
Suillus grevillei
Suillus neoalbidipes Suillus neoalbidipes 73663.jpg
Suillus neoalbidipes
Suillus spraguei Suillus spraguei 58269.jpg
Suillus spraguei

As of May 2016, Index Fungorum lists 98 valid species of Suillus: [11]

See also

Notes

  1. these were:
    • Fuscoboletinus aeruginascens - Grayish larch bolete (edible) [5]
    • Fuscoboletinus glandulosus
    • Fuscoboletinus grisellus
    • Fuscoboletinus ochraceoroseus - Rosy larch bolete
    • Fuscoboletinus paluster
    • Fuscoboletinus serotinus
    • Fuscoboletinus sinuspaulianus
    • Fuscoboletinus spectabilis - Bog bolete
    • Fuscoboletinus weaverae

Related Research Articles

<i>Suillus luteus</i> Species of edible fungus in the family Suillaceae native to Eurasia

Suillus luteus is a bolete fungus, and the type species of the genus Suillus. A common fungus native all across Eurasia from Ireland to Korea, it has been introduced widely elsewhere, including North and South America, southern Africa, Australia and New Zealand. Commonly referred to as slippery jack or sticky bun in English-speaking countries, its names refer to the brown cap, which is characteristically slimy in wet conditions. The fungus, initially described as Boletus luteus by Carl Linnaeus in 1753, is now classified in a different fungus family as well as genus. Suillus luteus is edible, though not as highly regarded as other bolete mushrooms. It is commonly prepared and eaten in soups, stews or fried dishes. The slime coating, however, may cause indigestion if not removed before eating. It is often sold as a dried mushroom.

<i>Suillus granulatus</i> Species of fungus

Suillus granulatus is a pored mushroom of the genus Suillus in the family Suillaceae. It is similar to the related S. luteus, but can be distinguished by its ringless stalk. Like S. luteus, it is an edible mushroom that often grows in a symbiosis (mycorrhiza) with pine. It has been commonly known as the weeping bolete, or the granulated bolete. Previously thought to exist in North America, that species has now been confirmed to be the rediscovered Suillus weaverae.

<i>Suillus bovinus</i> Species of edible fungus in the family Suillaceae native to Europe and Asia

Suillus bovinus, also known as the Jersey cow mushroom or bovine bolete, is a pored mushroom of the genus Suillus in the family Suillaceae. A common fungus native to Europe and Asia, it has been introduced to North America and Australia. It was initially described as Boletus bovinus by Carl Linnaeus in 1753, and given its current binomial name by Henri François Anne de Roussel in 1806. It is an edible mushroom, though not highly regarded.

<i>Suillus grevillei</i> Species of fungus

Suillus grevillei is a mycorrhizal mushroom with a tight, brilliantly coloured cap, shiny and wet looking with its mucous slime layer. The hymenium easily separates from the flesh of the cap, with a central stalk that is quite slender. The species has a ring or a tight-fitting annular zone.

<i>Chalciporus</i> Genus of fungi

Chalciporus is a genus of fungi in the family Boletaceae. There are approximately 25 species in the genus.

<i>Exsudoporus frostii</i> Species of fungus in the family Boletaceae found in North America

Exsudoporus frostii, commonly known as Frost's bolete or the apple bolete, is a bolete fungus first described scientifically in 1874. A member of the family Boletaceae, the mushrooms produced by the fungus have tubes and pores instead of gills on the underside of their caps. Exsudoporus frostii is distributed in the eastern United States from Maine to Georgia, and in the southwest from Arizona extending south to Mexico and Costa Rica. A mycorrhizal species, its fruit bodies are typically found growing near hardwood trees, especially oak.

<i>Suillus brevipes</i> Species of edible fungus in the family Suillaceae found throughout North America

Suillus brevipes is a species of fungus in the family Suillaceae. First described by American mycologists in the late 19th century, it is commonly known as the stubby-stalk or the short-stemmed slippery Jack. The fruit bodies (mushrooms) produced by the fungus are characterized by a chocolate to reddish-brown cap covered with a sticky layer of slime, and a short whitish stipe that has neither a partial veil nor prominent, colored glandular dots. The cap can reach a diameter of about 10 cm, while the stipe is up to 6 cm long and 2 cm thick. Like other bolete mushrooms, S. brevipes produces spores in a vertically arranged layer of spongy tubes with openings that form a layer of small yellowish pores on the underside of the cap.

<i>Suillus lakei</i> Species of fungus

Suillus lakei, commonly known as the matte Jack, Lake's bolete, or the western painted Suillus, is a species of fungus in the family Suillaceae. It is characterized by the distinctive reddish-brown tufted fibers or small scales on the cap, and the presence of a woolly veil on the stem. The caps can reach diameters of up to 15 cm, while the stems are between 6 and 12 cm long and usually 1–3 cm thick. On the underside of the cap is a layer of spongy yellow to yellow-brown angular pores; these pores are covered with a whitish partial veil when young. A mycorrhizal fungus, S. lakei grows in association with Douglas fir, and is found where this tree occurs. It is native to northwestern North America, but has been introduced to Europe, South America, and New Zealand. The mushroom is edible, but opinions vary considerably as to its quality.

<span class="mw-page-title-main">Larch bolete</span> Index of fungi with the same common name

The name larch bolete is used to describe a number of fungi in the order Boletales which occur in association with species of larch, conifers in the genus Larix. These fungi include members of the genus Suillus:

<i>Suillus spraguei</i> Species of mushroom

Suillus spraguei is a species of fungus in the family Suillaceae. It is known by a variety of common names, including the painted slipperycap, the painted suillus or the red and yellow suillus. Suillus spraguei has had a complex taxonomical history, and is also frequently referred to as Suillus pictus in the literature. The readily identifiable fruit bodies have caps that are dark red when fresh, dry to the touch, and covered with mats of hairs and scales that are separated by yellow cracks. On the underside of the cap are small, yellow, angular pores that become brownish as the mushroom ages. The stalk bears a grayish cottony ring, and is typically covered with soft hairs or scales.

<i>Suillus sibiricus</i> Species of fungus

Suillus sibiricus is a fungus of the genus Suillus in the family Suillaceae. It is found in mountains of Europe, North America, and Siberia, strictly associated with several species of pine tree. Due to its specific habitat and rarity in Europe, it has been selected for inclusion in several regional Red Lists. Its fruit bodies are characterised by having slimy caps in wet weather, which can reach diameters of up to 10 cm (3.9 in). On the underside of the cap are yellow angular pores that bruise a pinkish to cinnamon colour. The stem is up to 8 cm (3.1 in) tall and 2.5 cm (1.0 in) wide and typically has a ring, a remnant of the partial veil that covers the fruit body in its early development. In North America, it is commonly called the Siberian slippery jack. Phylogenetic analysis has shown that S. sibiricus is closely related to S. umbonatus and S. americanus, and may in fact be conspecific with the latter species.

<i>Suillus pungens</i> Species of fungus in the family Suillaceae found in California

Suillus pungens, commonly known as the pungent slippery jack or the pungent suillus, is a species of fungus in the genus Suillus. The fruit bodies of the fungus have slimy convex caps up to 14 cm (5.5 in) wide. The mushroom is characterized by the very distinct color changes that occur in the cap throughout development. Typically, the young cap is whitish, later becoming grayish-olive to reddish-brown or a mottled combination of these colors. The mushroom has a dotted stem (stipe) up to 7 cm (2.8 in) long, and 2 cm (0.8 in) thick. On the underside on the cap is the spore-bearing tissue consisting of minute vertically arranged tubes that appear as a surface of angular, yellowish pores. The presence of milky droplets on the pore surface of young individuals, especially in humid environments, is a characteristic feature of this species. S. pungens can usually be distinguished from other similar Suillus species by differences in distribution, odor and taste. The mushroom is considered edible, but not highly regarded.

<i>Suillus viscidus</i> Species of fungus

Suillus viscidus is an edible, uncommon mushroom in the genus Suillus. It associates with larch and is found throughout Europe and in Japan.

<i>Suillus tridentinus</i> Species of fungus

Suillus tridentinus, the orange larch bolete, is an uncommon, edible mushroom in the genus Suillus, found mainly at higher altitudes beneath larches on chalk. It can be found together with larch boletes, but more scarce.

<i>Suillus collinitus</i> Species of fungus

Suillus collinitus is a pored mushroom of the genus Suillus in the family Suillaceae. It is an edible mushroom found in European pine forests. The mushroom has a reddish to chestnut-brown cap that reaches up to 11 cm (4.3 in) in diameter, and a yellow stem measuring up to 7 cm (2.8 in) tall by 1 to 2 cm thick. On the underside of the cap are small angular pores, initially bright yellow before turning greenish-brown with age. A characteristic feature that helps to distinguish it from similar Suillus species, such as S. granulatus, is the pinkish mycelia at the base of the stem.

<i>Suillus salmonicolor</i> Species of fungus in the family Suillaceae

Suillus salmonicolor, commonly known as the Slippery Jill, is a fungus in the family Suillaceae of the order Boletales. First described as a member of the genus Boletus in 1874, the species acquired several synonyms, including Suillus pinorigidus and Suillus subluteus, before it was assigned its current binomial name in 1983. It has not been determined with certainty whether S. salmonicolor is distinct from the species S. cothurnatus, described by Rolf Singer in 1945. S. salmonicolor is a mycorrhizal fungus—meaning it forms a symbiotic association with the roots of plants such that both organisms benefit from the exchange of nutrients. This symbiosis occurs with various species of pine, and the fruit bodies of the fungus appear scattered or in groups on the ground near the trees. The fungus is found in North America, Hawaii, Asia, the Caribbean, South Africa, Australia and Central America. It has been introduced to several of those locations via transplanted trees.

<i>Suillus ochraceoroseus</i> Species of fungus

Suillus ochraceoroseus is a species of mushroom in the genus Suillus. It appears with larch in early summer, is edible, and similar in appearance to S. lakei.

<i>Buchwaldoboletus lignicola</i> Species of fungus

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.

Strobilomyces glabriceps is a species of bolete fungus in the family Suillaceae found in China. It was described as new to science in 1948 by Wei-Fan Chiu. The type collection was made in Kunming in June, 1938.

References

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  3. Hans V. Hansen & Ole Seberg (1984). "On the Typification of Suillus (Boletaceae, Basidiomycotina)". Taxon. 33 (4): 711–. doi:10.2307/1220791. JSTOR   1220791.
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  8. "Red Lists". European Council for the Conservation of Fungi. Retrieved 29 November 2009.
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  10. Pazarioglu NK, Akkaya A, Sariisik AM, Erkan G, Kumbasar EPA (2011). "Dyeing of wool fibers with natural fungal dye from Suillus luteus". Asian Journal of Chemistry. 23 (6): 2600–4. ISSN   0970-7077.
  11. "Species Fungorum (version January 2016). In: Species 2000 & ITIS Catalogue of Life". Archived from the original on 25 February 2018. Retrieved 18 May 2016.
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  13. 1 2 Wang Q-B, Yao Y-J (2004). "Revision and nomenclature of several boletes in China". Mycotaxon. 89 (2): 341–8.
  14. Miller Jr., Orson K.; Miller, Hope H. (2006). North American Mushrooms: A Field Guide to Edible and Inedible Fungi. Guilford, CN: FalconGuide. p. 364. ISBN   978-0-7627-3109-1.
  15. Sarwar S, Saba M, Khalid AN, Dentinger BM (2015). "Suillus marginielevatus, a new species and S. triacicularis, a new record from Western Himalaya, Pakistan". Phytotaxa. 203 (2): 169–77. doi:10.11646/phytotaxa.203.2.6.
  16. Bruns TD, Grusiba LC, Trappe JM, Kerekes JF, Vellinga EC (2010). "Suillus quiescens, a new species commonly found in the spore bank in California and Oregon". Mycologia. 102 (2): 438–46. doi:10.3852/09-149. PMID   20361510. S2CID   16220685.
  17. McNabb RFR. (1968). "The Boletaceae of New Zealand". New Zealand Journal of Botany. 6 (2): 137–76 (see p. 166). doi: 10.1080/0028825X.1968.10429056 . Open Access logo PLoS transparent.svg
  18. Verma B, Reddy S (2014). "Suillus triacicularis sp. nov., a new species associated with Pinus roxburghii from northwestern Himalayas, India". Phytotaxa. 162 (3): 157–64. doi:10.11646/phytotaxa.162.3.4.