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Polyporus leptocephalus
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Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus

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Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus
Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus

Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus
Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus

Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus
Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus

Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus
Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 3
Polyporus leptocephalus

Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 1
Polyporus leptocephalus
Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 1
Polyporus leptocephalus

Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 1
Polyporus leptocephalus
Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 1
Polyporus leptocephalus

Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 1
Polyporus leptocephalus
Polyporus leptocephalus
© Copyright Malcolm Storey 2011-2118 · 1
Polyporus leptocephalus
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California Fungi—Polyporus leptocephalus Polyporus leptocephalus
(Photo: © Fred Stevens)

Polyporus leptocephalus (Jacq.) Fr.
Syst. mycol. 1: 349. 1821.

Common Name: none

Synonym: Polyporus elegans Bull.: Fr.

  • Pileus

    Fruiting body annual, stipitate, cap 2.0-5.0 cm broad, convex, becoming convex-umbillicate to funnel-form in profile, round to kidney-shaped in outline; margin incurved, decurved to nearly plane in age, often wavy, not striate; upper surface glabrous, cream to tan-brown; context up to 5 mm thick, pliant, tough, colored like the cap surface, unchanging when injured, cork-like when dried; odor slightly aromatic, sharp; taste, mild to slightly astringent.

  • Hymenophore

    Pores 5-6 per mm, rounded, angular to occasionally elongated into slits, descending the stipe a short distance, cream-buff when young, tan-brown at maturity, unchanging when bruised; Tubes up 2.0 mm in length, not separable from the cap.

  • Stipe

    Stipe 0.5-6.0 cm long, 4.0-8.0 mm thick, rarely absent, solid, tapering to a narrowed base, variable in attachment: central, eccentric or lateral; surface cream-buff at apex, blackish-brown below, irregularly roughened, sometimes wrinkled or checked like tree bark, occasionally peeling away revealing a brownish under-layer; context tough, pliant, colored like that of the cap, unchanging.

  • Spores

    Spores 7.5-9.0 x 2.0-3.5 µm, oblong-ellipsoid, smooth, thin-walled, inamyloid; spores white in deposit.

  • Habitat

    Solitary or in small groups, primarily on hardwood branches or logs; fruiting from early to late winter.

  • Edibility

    Inedible, leathery, tough.

  • Comments

    This stipitate polypore is recognized by a smooth, buff-colored cap and distinctive bicolored stipe--blackish at the base, pallid at the apex. Although sporadic in its fruiting, it is the most common member of a group of similar and confusing species. These include Polyporus varius , which has a buff-colored, striate-margined cap, Polyporus badius (= P. picipes ) typically larger than P. leptocephalus , the cap tan-brown to dark-brown cap with a stipe that is blackish at the base and brownish at the apex, and Polyporus melanopus , which tends to grow from buried wood, has a reddish-brown to dark-brown cap, and a dark colored, centrally attached stipe.

  • References

    Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
    Gilbertson, R.L. & Ryvarden, L. (1987). North American Polypores, vol. 2. Fungiflora: Oslo, Norway. 452 p.
    Ginns, J. (2017). Polypores of British Columbia (Fungi: Basidiomycota). Province of British Columbia: Victoria, BC. 260 p.
    Lindsey, J.P. & Gilbertson, R.L. (1978). Basidiomycetes that Decay Aspen in North America. J. Cramer: Vaduz. 406 p.
    Lowe, J.L. (1942). The Polyporaceae of New York State (Except Poria ). New York State College of Forestry: Syracuse, NT. 128 p.
    Overholts, L.O. (1953). The Polyporaceae of the United States, Alaska, and Canada. University of Michigan Press: Ann Arbor, MN. 466 p.

  • Other Descriptions and Photos Main Photo

    (D=Description; I=Illustration; P=Photo; CP=Color Photo)

The Fungi of California
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Updated: 2019-10-23 03:02:57 gmt
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