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Otidea alutacea (Pers. ) Massee
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Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea

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Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea
Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea

Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea
Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea

Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea
Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea

Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea
Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea

Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea
Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea

Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea
Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea

Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea
Otidea alutacea
© Copyright Malcolm Storey 2011-2118 · 3
Otidea alutacea

Hosts · map
FamilyScientific name @ source (records)
Tiliaceae  Tilia sp @ BPI (1)
_  Substrate @ BPI (5)

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California Fungi—Otidea alutacea Otidea alutacea
(Photo: © Steve Trudell)

Otidea alutacea (Pers.) Massee
British Fungus Flora. Agarics and Boleti 4: 446. 1895.

Common Name: none

  • Sporocarp

    Fruiting body 2-6 cm tall, 2-4 cm broad, erect-cupulate, blunt to truncate in profile, split down one side, tapering below, substipitate, or the stipe lacking; margin wavy to contorted when fruiting in clusters; hymenial surface pale-dull-brown to light-greyish-brown; exterior surface light-brown, finely pubescent to nearly glabrous; context up to 2 mm thick, pliant, pallid; odor and taste mild.

  • Spores

    Spores 14-15.5 x 7-8 µm, elliptical, smooth, with two oil droplets; asci non-amyloid; paraphysis hooked.

  • Habitat

    Typically clustered, but occasionally solitary, in mixed hardwood/conifer woods; fruiting from late fall to mid-winter.

  • Edibility

    Unknown.

  • Comments

    Otidea alutacea can be separated from other California Otideas by shape (cups blunt in profile rather than elongated), a brownish to brownish-grey hymenium, and clustered fruiting habit. It is fairly common in our woodlands but often overlooked. A close relative, Otidea alutacea var. microspora , has a more yellowish exterior and as the name suggests, smaller spores. Two other Otidea species which may be encountered include O. leporina , with a more tapered cup and yellowish-brown hymenium, and O. onotica , larger than the latter, ear-like in shape, the hymenium yellowish-brown, often with pinkish tints.

  • References

    Beug, M.W., Bessette, A.E. & Bessette, A.R. (2014). Ascomycete Fungi of North America. University of Texas Press: Austin, TX. 488 p.
    Breitenbach, J. & Kr√§nzlin, F. (1984). Fungi of Switzerland. Volume 1: Ascomycetes. Verlag Mykologia: Luzern, Switzerland. 310 p.
    Dennis, R.W.G. (1981). British Ascomycetes. J. Cramer: Vaduz, Liechtenstein. 585 p.
    Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
    Kanouse, B.B. (1949). Studies in the genus Odidea . Mycologia 41: 660-677.
    Medardi, G. (2006). Ascomiceti d'Italia. Centro Studi Micologici: Trento. 454 p.

  • Other Descriptions and Photos Main Photo
    • Arora (1986): p. 832 (D), p. 833 (P)
    • Breitenbach &; Kränzlin (vol. 1): sp. 60 (D, I, & CP)
    • Jordan: p. 39 (D & CP)
    • Phillips: p. 306 (D), p. 307 (P)
    • Tylutki (1979): p. 98 (D & P)

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

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