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Rhodocollybia maculata (Alb. and Schwein.) Singer
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Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata

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Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata
Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata

Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata
Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata

Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata
Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata

Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata
Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata

Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata
Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata

Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata
Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata

Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata
Rhodocollybia maculata
© Copyright Malcolm Storey 2011-2118 · 3
Rhodocollybia maculata
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California Fungi—Rhodocollybia maculata Rhodocollybia maculata
(Photo: © Michael Wood)

Rhodocollybia maculata (Alb. & Schw.:Fr.) Singer
Schweiz. Zeit. Pilzk. 17: 71. 1939.

Common Name: none

Synonym: Collybia maculata (Alb. & Schw.:Fr.) Kummer

  • Pileus

    Cap 4.0-8.0 (10) cm broad, obtuse-conic to convex, eventually plano-convex; margin incurved, then decurved, sometimes upturned and wavy in age; surface moist, not viscid, glabrous to minutely tomentose, cream-colored, becoming pinkish-tan, tawny-brown to rusty-brown toward the disc, often spotted these colors at maturity; context soft, white, unchanging, up to 1.0 cm thick at the disc; odor mild, fungal; taste slightly bitter.

  • Lamellae

    Gills adnexed, close, relatively narrow, up to 0.5 cm broad, the edges uneven, cream-colored, in age pale-tan, frequently with tan to rust-brown spots; lamellulae in up to five series.

  • Stipe

    Stipe 4.0-8.0 cm tall, 0.5-1.0 (1.5) cm thick, more or less equal, the base usually pointed and partially rooted; stipe round to flattened, readily splitting, hollow in age; surface dry, whitish, conspicuously longitudinally striate, tending to become spotted like the cap; partial veil absent.

  • Spores

    Spores 5.5-7.0 x 4.5-5.5 µm, subglobose to ovoid (elliptical in some varieties), smooth, thin-walled, hilar appendage inconspicuous; some spores dextrinoid in Meltzer's reagent; spores cream to tinged pink in deposit.

  • Habitat

    Solitary, in small groups, or clustered on well-rotted conifer logs or lignin-rich soils in montane regions in the spring; also in coastal forests during the mid-winter months; uncommon.

  • Edibility

    Inedible, usually bitter.

  • Comments

    Rhodocollybia maculata is a cream-colored mushroom that, as the species epithet suggests, becomes spotted in age. The mottling, usually tawny to rusty-brown, is most obvious on the cap but can also be seen on the gills and stipe. Other fieldmarks include a fruiting habit on rotting conifer wood, and a conspicuously striate stipe. Several varieties have been described differing in color and spore shape. Variety maculata , described above, appears to be the most common in California. Rhodocollybia maculata 's closest relatives, Rhodocollybia badiialba , Rhodocollybia oregonensis , and Rhodocollybia butyracea vary in cap color from tan, reddish-brown to dark vinaceous-brown, but lack spots. In the Sierra Nevada, Rhodocollybia maculata should be compared with two snowbank species, Mycena overholtzii and Megacollybia platyphylla . Both occur on rotting wood, the former in clusters, the latter usually in small groups. Mycena overholtzii has a light-grey to tan, striate-margined cap with a conspicuously pubescent stipe base, while Megacollybia platyphylla has a dark grey to brown cap and broad gills. Neither species is spotted in age.

  • References

    Antonín, V. & Noordeloos, M.E. (1997). A Monograph of Marasmius , Collybia and related general in Europe. IHW - Verlag: Eching, Germany. 256 p.
    Bas, C., Kyper, T.W., Noordeloos, M.E. & Vellinga, E.C. (1995). Flora Agaricina Neerlandica -- Critical monographs on the families of agarics and boleti occuring in the Netherlands. Volume 3. Tricholomataceae. A. A. Balkema: Rotterdam, Netherlands. 183 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.
    Halling, R.E. (1983). The Genus Collybia (Agaricales) in the Northeastern United States and Adjacent Canada. J. Cramer: Braunschweig, Germany. 148 p.
    Lennox, J.W. (1979). Collybioid genera in the Pacific Northwest. Mycotaxon 9(1): 117-231.

  • Other Descriptions and Photos Main Photo

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

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