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Mycena galopus (Pers.) P. Kumm.
Life   Fungi   Basidiomycota   Tricholomataceae   Mycena

Mycena galopus var candida
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var candida

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Mycena galopus var candida
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var candida
Mycena galopus var candida
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var candida

Mycena galopus var candida
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var candida
Mycena galopus var candida
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var candida

Mycena galopus var candida
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var candida
Mycena galopus var nigra
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var nigra

Mycena galopus var galopus
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var galopus
Mycena galopus var nigra
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var nigra

Mycena galopus var nigra
© Copyright Malcolm Storey 2011-2118 · 3
Mycena galopus var nigra

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California Fungi—Mycena galopus Mycena galopus
(Photo: © Fred Stevens)

Mycena galopus (Pers.) P. Kumm.
Führ. Pilzk.: 108. 1871.

Common Name: none

Synonym: Mycena fusco-ocula A.H. Smith

  • Pileus

    Cap 5-20 (25) mm obtuse-conic, broadly so to campanulate in age, often with a low umbo; margin decurved, sometimes becoming upturned and crenate; surface moist, translucent-striate to somewhat sulcate, hygrophanous, when fresh, dark greyish-brown with a faint whitish bloom at the disc, margin paler, fading overall in age; context thin, soft, approximately 1 mm thick, white to grey; odor and taste not distinctive.

  • Lamellae

    Gills close to subdistant, ascending-adnate, occasionally with a decurrent tooth, narrow, up to 2 mm in width, edges and faces concolorous; lamellulae in 2-3 series.

  • Stipe

    Stipe 40-75 (100) x 1-2 mm in width, slender, cylindrical, hollow, fragile, equal to slightly larger at the base; surface glabrous to finely pruinose at apex, greyish brown, usually paler above, whitish hairs at base occasionally extending up the stipe; partial veil absent; fresh specimens producing a white milky juice when injured or cut, particularly at the base.

  • Spores

    Spores 9-13 x 5-6 µm, smooth, thin-walled, ellipsoid in face-view, tear-shaped in profile with a well-developed hilar appendage, amyloid; spores white in deposit.

  • Habitat

    Scattered or forming large groups in litter of conifers and hardwoods; especially common under coast redwood ( Sequoia sempervirens ); also reported from low elevations of the Sierra Nevada; fruiting from late fall to mid-winter along the coast and late fall in the Sierra Nevada; common in most years.

  • Edibility

    Edibility unknown; insignificant.

  • Comments

    California is home to many greyish-brown Mycenas, most of which are difficult to identify without a microscope. Mycena galopus is an exception. It is the only known Mycena in California that exudes a milky juice when tissues such as the base of the stipe are cut or injured. Unfortunately, this feature may be faint or absent in older specimens. Lacking milky juice, a helpful macroscopic character is a bicolored cap, dark at the disk, shading to a pale margin. Interestingly, the contrasting cap colors are the basis of the species epithet for a synonym of Myena galopus , i.e. Mycena fusco-ocula . Mycena galopus is a cosmopolitan species, found not only along the Pacific Coast, but also in the eastern US, Europe, and Japan.

  • References

    Aronsen, A. & Læssøe, T. (2016). The Genus Mycena s.l. Danish Mycological Society: Copenhagen, Denmark. 373 p.
    Arora, D. (1986). Mushrooms Demystified. Ten Speed Press: Berkeley, CA. 959 p.
    Breitenbach, J. & Kränzlin, F . (1991). Fungi of Switzerland. Volume 3: Boletes and Agarics (1st Part). Strobilomycetaceae, Boletaceae, Paxillaceae, Gomphidiaceae, Hygrophoraceae, Tricholomataceae, Polyporaceae (lamellate). Verlag Mykologia: Luzern, Switzerland. 361 p.
    Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
    Mass Geesteranus, R. A. (1992). Mycenas of the Northern Hemisphere. II. Conspectus of the Mycenas of the Northern Hemisphere. Koninklijke Nederlandse Akademie van Vetenschappen: Amsterdam, Netherlands. 493 p.
    Perry, Brian A. (2002). A Taxonomic Investigation of Mycena in California. Masters Thesis, San Francisco State University: San Francisco, CA. 157 p. ( PDF )
    Robich, G. (2003). Mycena D'Europa. Associazione Micologica Bresadola: Trento, Italy. 728 p.
    Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
    Smith, A.H. (1937). Studies in the Genus Mycena . IV. Mycologia 29(3): 338-354.
    Smith, A.H. (1947). North American Species of Mycena . University of Michigan Press: Ann Arbor, MI. 521 p. ( PDF )

  • Other Descriptions and Photos Main Photo

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

The Fungi of California
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Updated: 2020-10-24 04:06:58 gmt
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