Boletus separans

Boletus separans
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Boletales
Family:	Boletaceae
Genus:	Boletus
Species:	B. separans
Binomial name
	Boletus separans; Peck (1873)
Synonyms
	Boletus edulis subsp. separans (Peck) Singer (1947); Boletus edulis f. separans (Peck) Vassilkov (1966); Boletus reticulatus subsp. separans (Peck) Hlaváček (1994); Xanthoconium separans (Peck) Halling & Both (1998);

Boletus separans is a species of bolete fungus in the family Boletaceae.

Taxonomy

The species was described as new to science in 1873 by American mycologist Charles Horton Peck.¹ In 1998, Roy Halling and Ernst Both transferred the bolete to the genus Xanthoconium.² Molecular phylogenetic analysis published in 2013 shows that it is more closely related to Boletus sensu stricto than to Xanthoconium.³

Description

The brownish cap is 4–12 centimetres (1+1⁄2–4+3⁄4 in) wide with dented pits. There are 1–3 pores per millimetre, white when young, aging to yellow.⁴ The stem is 4–12 cm tall and 1.5–3 cm (1⁄2–1+1⁄4 in) thick. The flesh is white, with a mild scent and taste; the smell is unpleasant when dried. The spore print is brownish.⁴

It resembles Xanthoconium purpureum and Tylopilus rubrobrunneus.⁴

Habitat and distribution

It grows on the ground in the eastern United States from June to September.⁴

Uses

The species is a choice edible mushroom.⁵

References

Peck CH. (1873). "Descriptions of new species of fungi". Bulletin of the Buffalo Society of Natural Sciences. 1 (2): 41–72 (see p. 59).
Halling RE, Both EE (1998). "Generic affinity of Boletus separans". Bulletin of the Buffalo Society of Natural Sciences. 36: 239–243.
Nuhn ME, Binder M, Taylor AF, Halling RE, Hibbett DS (2013). "Phylogenetic overview of the Boletineae". Fungal Biology. 117 (7–8): 479–511. doi:10.1016/j.funbio.2013.04.008. PMID 23931115.
Audubon (2023). Mushrooms of North America. Knopf. p. 328. ISBN 978-0-593-31998-7.
Phillips, Roger (2010). Mushrooms and Other Fungi of North America. Buffalo, NY: Firefly Books. p. 269. ISBN 978-1-55407-651-2.

External links

Boletus separans in Index Fungorum.

[Peck_1873-1] Peck CH. (1873). "Descriptions of new species of fungi". Bulletin of the Buffalo Society of Natural Sciences. 1 (2): 41–72 (see p. 59).

[Halling_1998-2] Halling RE, Both EE (1998). "Generic affinity of Boletus separans". Bulletin of the Buffalo Society of Natural Sciences. 36: 239–243.

[Nuhn_2013-3] Nuhn ME, Binder M, Taylor AF, Halling RE, Hibbett DS (2013). "Phylogenetic overview of the Boletineae". Fungal Biology. 117 (7–8): 479–511. doi:10.1016/j.funbio.2013.04.008. PMID 23931115.

[audu-4] Audubon (2023). Mushrooms of North America. Knopf. p. 328. ISBN 978-0-593-31998-7.

[5] Phillips, Roger (2010). Mushrooms and Other Fungi of North America. Buffalo, NY: Firefly Books. p. 269. ISBN 978-1-55407-651-2.

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