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Exidia glandulosa (Bull. ) Fr.
Life   Fungi   Basidiomycota   Exidiaceae   Exidia

Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa

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Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa
Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa

Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa
Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa

Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa
Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa

Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa
Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa

Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa
Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa

Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 3
Exidia glandulosa
Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 1
Exidia glandulosa

Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 1
Exidia glandulosa
Exidia glandulosa
© Copyright Malcolm Storey 2011-2118 · 1
Exidia glandulosa

Hosts · map
FamilyScientific name @ source (records)
Aceraceae  Acer negundo @ BPI (1)

Acer pensylvanicum @ BPI (1)

Acer rubrum @ BPI (4)

Acer saccharum @ BPI (1)

Acer sp @ BPI (3)

Acer spicatum @ BPI (4)
Apocynaceae  Nerium oleander @ BPI (1)
Araliaceae  Aralia spinosa @ BPI (1)

Neopanax arboreus @ BPI (1)
Asteraceae  Baccharis sp @ BPI (1)
Betulaceae  Alnus glutinosa @ BPI (1)

Alnus incana @ BPI (16)

Alnus oregona @ BPI (3)

Alnus rubra @ BPI (1)

Alnus serrulata @ BPI (3)

Alnus sp @ BPI (13)

Alnus tenuifolia @ BPI (1)

Betula alba @ BPI (2)

Betula lenta @ BPI (2)

Betula lutea @ BPI (2)

Betula occidentalis @ BPI (1)

Betula papyrifera @ BPI (2)

Betula pubescens @ BPI (1)

Betula sp @ BPI (3)

Carpinus betulus @ BPI (1)

Carpinus caroliniana @ BPI (3)

Corylus avellana @ BPI (1)

Ostrya sp @ BPI (1)

Ostrya virginiana @ BPI (3)
Celastraceae  Celastrus sp @ BPI (1)
Cornaceae  Cornus florida @ BPI (1)
Cunoniaceae  Weinmannia racemosa @ BPI (1)
Ebenaceae  Diospyros virginiana @ BPI (1)
Ericaceae  Oxydendrum arboreum @ BPI (1)
Fabaceae  Robinia pseudoacacia @ BPI (1)
Fagaceae  Castanea dentata @ BPI (5)

Castanea japonica @ BPI (1)

Fagus grandifolia @ BPI (6)

Fagus sp @ BPI (6)

Fagus sylvatica @ BPI (2)

Quercus alba @ BPI (3)

Quercus borealis @ BPI (1)

Quercus cerris @ BPI (1)

Quercus coccinea @ BPI (1)

Quercus gambelii @ BPI (1)

Quercus glandulifera @ BPI (2)

Quercus incana @ BPI (1)

Quercus sp @ BPI (31)

Quercus velutina @ BPI (1)
Grossulariaceae  Ribes sp @ BPI (1)

Ribes vulgare @ BPI (1)
Hamamelidaceae  Liquidambar sp @ BPI (2)

Liquidambar styraciflua @ BPI (1)
Juglandaceae  Carya alba @ BPI (1)

Carya oliviformis @ BPI (1)

Carya ovata @ BPI (1)

Carya sp @ BPI (4)

Juglans cinerea @ BPI (2)
Lauraceae  Lindera benzoin @ BPI (1)

Persea sp @ BPI (1)

Sassafras variifolium @ BPI (1)
Magnoliaceae  Liriodendron sp @ BPI (1)

Liriodendron tulipifera @ BPI (1)

Magnolia glauca @ BPI (1)
Malvaceae  Gossypium sp @ BPI (1)
Nyssaceae  Nyssa sp @ BPI (2)

Nyssa sylvatica @ BPI (1)
Oleaceae  Fraxinus americana @ BPI (1)
Pinaceae  Picea sitchensis @ BPI (1)
Platanaceae  Platanus occidentalis @ BPI (1)
Polycitoridae  Salix sp @ BPI (20)
Rosaceae  Prunus angustifolia @ BPI (1)

Prunus persica @ BPI (1)

Prunus serotina @ BPI (2)

Prunus sp @ BPI (2)

Pyrus malus @ BPI (1)

Rosa sp @ BPI (1)

Rubus sp @ BPI (1)
Salicaceae  Populus grandidentata @ BPI (3)

Populus sp @ BPI (2)

Populus tremula @ BPI (1)

Populus tremuloides @ BPI (7)

Populus trichocarpa @ BPI (2)

Salix alaxensis @ BPI (1)

Salix bebbiana @ BPI (2)

Salix fluviatilis @ BPI (1)

Salix nigra @ BPI (2)
Tiliaceae  Tilia americana @ BPI (2)

Tilia platyphyllos @ 723470A (1); 723470B (1)

Tilia sp @ BPI (2)
Ulmaceae  Ulmus campestris @ BPI (1)

Ulmus sp @ BPI (1)
Vitaceae  Vitis bipinnata @ BPI (1)
_  Substrate @ BPI (154)

unknown @ BPI (2)

Associates · map
FamilyScientific name @ source (records)
Hypocreaceae  Hypocrea citrina @ BPI (1)

Hypocrea sulphurea @ BPI (2)

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California Fungi—Exidia glandulosa Exidia glandulosa
(Photo: © Michael Wood)

Exidia glandulosa Fries
Syst. Mycol. 2: 224. 1822.

Common Name: black witch's butter

  • Sporocarp

    Fruiting body 1-2 cm broad, irregularly convoluted to brain-like, often aggregated into masses up to 10-20 cm long and 3-5 cm broad; upper surface fertile, smooth to warted, olive-black to black; flesh gelatinous, soft, thin, in dry weather forming a black crust on the substrate; odor and taste mild.

  • Spores

    Spores 10-15 x 4-5 µm, sausage-shaped, smooth, nonamyloid; spores whitish in deposit; basidia longitudinally septate.

  • Habitat

    Solitary or in rows on hardwood branches; occasionally on branches of Monterey pine ( Pinus radiata ); fruiting from after the fall rains to late winter.

  • Edibility

    Probably edible, but insignificant.

  • Comments

    Exidia glandulosa is common in the San Francisco Bay Area and other parts of California, but frequently overlooked because of its dark color. Fruitings can be solitary but more typically are in long rows or elongated masses.

  • References

    Arora, D. (1986). Mushrooms Demystified. Ten Speed Press: Berkeley, CA. 959 p.
    Breitenbach, J. & Kränzlin, F. (1986). Fungi of Switzerland. Volume 2: Non-Gilled Fungi. Verlag Mykologia: Luzern, Switzerland. 412 p.
    Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
    Ellis, M.B. & Ellis, J.P. (1990). Fungi without Gills (Hymenomycetes and Gasteromycetes). Chapman and Hall: London, England. 329 p.
    Lowy, B. (1971). Flora Neotropica, Monograph No. 6, Tremellales. Hafner Publishing Company: New York, NY. 154 p.
    Martin, G.W. (1964). Revision of the North Central Tremellales. J. Cramer: Lehre. 122 p.
    McNabb, R.F.R. (1964). New Zealand Tremellales -- I. New Zeal. Journ. Bot. 2: 403-414.
    Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.

  • Other Descriptions and Photos Main Photo
    • Wikipedia: Exidia glandulosa (D & CP)
    • Arora (1986): p. 672 (D & P)
    • Jordan: p. 370 (D & CP)
    • Lincoff: p. 382 (D), plate 563 (CP)
    • Miller: sp. 381 (D)

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

The Fungi of California
Copyright © 1998-2020 Michael Wood & Fred Stevens
A MykoWeb Page

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