Scientific name: Volvariella bombycina (Schaeff.)
Singer
Derivation of name: Volva means "sheath" and ella is
a diminutive to distinguish this genus from Volvaria.
Bombyc- means "silky" in reference to
the silky fibers of
the cap.
Synonyms: Agaricus bombycinus Schaeff.
Common name(s): Tree Volvariella.
Phylum: Basidiomycota
Order: Agaricales
Family: Pluteaceae
Occurrence on wood substrate: Saprobic; solitary or in
groups on deciduous standing trees or stumps or logs; July
through October.
Dimensions: Caps 5-20 cm wide; stipes 6-20 cm long
and 1-2
cm thick.
Cap: White to yellowish-white; dry, silky-fibered.
Gills: Free; white at first, becoming pinkish.
Spore print: Salmon to pink.
Stipe: White; smooth; dry; surrounded at base by a
membranous volva.
Veil: Absent.
Comments: These mushrooms often grow out of wounds
in
trees.
More information at MushroomExpert.com:

Figure
1. A beautiful specimen of Volvariella bombycina
growing from a tree.
Note the sac-like volva at the base of
the stem and the whitish cap covered with hairs.
Photo ©
Joshua Huber.

Figure 2. Volvariella bombycina growing from the base
of a sugar maple tree (Acer saccharum) in a residential
landscape.
Photo © John Dawson.

Figure 3. The whitish cap is covered with silky fibers. The
sac at the base of the stem is the remains of the universal
veil.
Photo© John Dawson.
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Figure 4. Closed universal veil of Volvariella bombycina.
Photo © Dorothy Smullen.

Figure 5. The cap is emerging from the veil of
the specimen in Figure 4. Photo © Dorothy Smullen.

Figure 6. The silky-fibered cap of Volvariella bombycina
emerging from the universal veil.
Photo © Julie Zeyzus.

Figure
7. The gills are white at first. Note the white hairs on
the cap. With age, these often turn yellowish or brownish.
Photo ©
George Morrison.

Figure 8. Mature gills of Volvariella bombycina are pinkish.
Photo © Julie Zeyzus.

Figure 9. The gills are free from the stalk. Photo ©
William
Roody.
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