Polyporus leptocephalus

The blackfoot polypore, Polyporus leptocephalus (Jacq.) Fr.

Classification

Kingdom Fungi
Phylum Basidiomycota
Class Basidiomycetes
Order Polyporales
Family Polyporaceae
Genus Polyporus


Synonyms

Boletus calceolus sensu Withering [Bot. Arr. Brit. Pl. 4: 389 (1801)]
  fide Checklist of Basidiomycota of Great Britain and Ireland (2005)
Boletus leptocephalus Jacq.
  Misc. Austriaca 1: 142 (1778) [1778]
Boletus nigripes With.
  Arr. Brit. Pl., Edn 3: 316 (1796)
Coltricia leptocephala (Jacq.) Gray
  Nat. Arr. Brit. Pl. (London) 1: 645 (1821)
Leucoporus leptocephalus (Jacq.) Quél.
  Enchir. fung. (Paris): 166 (1886)
Melanopus elegans (Bull.) Pat.
  Essai Tax. Hyménomyc.: 80 (1900)
Polyporellus elegans (Bull.) P. Karst.
  Meddn Soc. Fauna Flora fenn. 5: 37 (1880)
Polyporellus leptocephalus (Jacq.) P. Karst.
  Meddn Soc. Fauna Flora fenn. 5: 38 (1880)
Polyporus elegans Fr.
  553 (1838) [1836]
Polyporus elegans Bull.
  Herbier de la France: tab. 46 (1780)
Polyporus leptocephalus f. nummularius (Bull.) Courtec.
  Docums Mycol. 23(no. 92): 62 (1994)
Polyporus varius f. nummularius (Bull.) Courtec.
  Docums Mycol. 18(no. 72): 50 (1988)
Polyporus varius subsp. elegans (Bull.) Donk
  (1933)
Polyporus varius var. elegans (Bull.) Gillot & Lucand
  Cat. Champ. Marn.: 327 (1891)
Polyporus varius var. nummularius (Bull.) Fr.
  Syst. mycol. (Lundae) 1: 353 (1821)
Polyporus varius ß nummularius Bull.

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Common names

Blackfoot polypore
Löwengelber Stielporling (German)
Polypore variable (French)
Mustasukkakääpä (Finnish)

Description

Cap: 1-10 cm diameter, convex with shallow central depression, infundibuliform, cream colored with brown radial streaks or yellow-brown, becoming darker with age; margin wavy or wrinkled.
Stem: upper part pallid, lower part dark brown, central, thin, equal; flesh whitish, thin and leathery.
Pores: white or pale buff when young, later ochre-brown, circular, 4-7 per mm; tubes whitish, decurrent, 0.5-2.5 mm deep.

The pore surface of P. leptocephalus.
The pore surface of Polyporus leptocephalus

Spores: hyaline, smooth, cylindrical, non-amyloid, with droplets, 9-11 x 3.5-4 µm.
Odor: indistinctive.
Taste: slightly bitter.
Edibility: inedible.
Habitat: grows on dead or dying wood of coniferous trees.

Medicinal properties

Antitumor effects

Polysaccharides extracted from the mycelial culture of P. leptocephalus and administered intraperitoneally into white mice at a dosage of 300 mg/kg inhibited the growth of both Sarcoma 180 and Ehrlich solid cancers by 60% (Ohtsuka et al., 1973).

Links

References

Ohtsuka S, Ueno S, Yoshikumi C, Hirose F, Ohmura Y, Wada T, Fujii T, Takahashi E.
Polysaccharides having an anticarcinogenic effect and a method of producing them from species of Basidiomycetes.
UK Patent 1331513, 26 September 1973.

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