Leccinum

Leccinum is a genus of fungi in the family Boletaceae. It was the name given first to a series of fungi within the genus Boletus, then erected as a new genus last century. Their main distinguishing feature is the small, rigid projections (scabers) that give a rough texture to their stalks. The genus name was coined from the Italian Leccino, for a type of rough-stemmed bolete. The genus has a widespread distribution, especially in north temperate regions, and contains about 75 species.[2]

Leccinum
Leccinum aurantiacum
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Boletaceae
Genus: Leccinum
Gray
Type species
Leccinum aurantiacum
(Bull.) Gray (1821)
Synonyms[1]
  • Krombholzia P.Karst. (1881)
  • Trachypus Bataille (1908)
  • Krombholziella Maire (1937)

Ecology and habitat

Stem of a Leccinum mushroom, showing the distinctive scabers

Leccinum species are generally found in the woodlands of Eurasia, and North America, forming ectomycorrhizal associations with trees. Most Leccinum species are mycorrhizal specialists, associating with trees of a single genus. Leccinum aurantiacum is an exception, however, occurring in mycorrhizal association with birch, poplar, and oak.[3]

Culinary value

They have generally been presumed to be edible for the most part, but there are reports of poisoning after eating unidentified members of the genus in North America, even after thorough cooking. The orange- to red-capped species, including L. insigne, are suspected. Species of Leccinum often cause nausea when consumed raw.[4][5][6]

Species

L. scabrum

There are around 75 species including:

  • L. albellum
  • L. atrostipitatum
  • L. aurantiacum — Red-capped scaber stalk
  • L. boreale — Northern roughstem
  • L. crocipodium
  • L. cyaneobasileucum
  • L. discolor
  • L. duriusculum — Slate bolete
  • L. griseum
  • L. holopus
  • L. insigne — Aspen bolete
  • L. intusrubens — (Malaysia)
  • L. lepidum
  • L. manzanitae — Manzanita bolete
  • L. piceinum
  • L. ponderosum
  • L. pseudoscabrum
  • L. quercinum
  • L. rhodoporosum[7]
  • L. roseofractum
  • L. scabrum — Birch bolete
  • L. variicolor
  • L. versipelle — Orange birch bolete
  • L. violaceotinctum
  • L. vulpinum

References

  1. "Synonymy: Leccinum Gray". Species Fungorum. CAB International. Retrieved 2015-02-08.
  2. Kirk PM, Cannon PF, Minter DW, Stalpers JA (2008). Dictionary of the Fungi (10th ed.). Wallingford: CABI. p. 364. ISBN 978-0-85199-826-8.
  3. den Bakker, Henk C.; Zuccarello, G. C.; Kuyper, TH. W.; Noordeloos, M. E. (2004). "Evolution and host specificity in the ectomycorrhizal genus Leccinum" (PDF). New Phytologist. 163: 201–15. doi:10.1111/j.1469-8137.2004.01090.x. Archived from the original (PDF) on 2011-07-24.
  4. Beug, Michael W. (July–August 2017). "Amatoxin Mushroom Poisoning In North America 2015-2016" (PDF). The Mycophile. 54 (4): 13. Retrieved 2017-08-21.
  5. Beug, Michael W.; Shaw, Marilyn; Cochran, Kenneth W. (Fall 2006). "Thirty-Plus Years of Mushroom Poisoning: Summary of the Approximately 2,000 Reports in the NAMA Case Registry" (PDF). McIlvainea. 16 (2): 47–68. Retrieved 2017-08-21.
  6. Beug, Michael W. "NAMA Toxicology Committee Report for 2007: Recent Mushroom Poisonings in North America" (PDF). Retrieved 2017-08-21.
  7. Takahashi H. (2007). "Five new species of the Boletaceae from Japan". Mycoscience. 48 (2): 90–9. doi:10.1007/s10267-006-0332-6p.
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