Scientific name: Pleurotus dryinus (Pers.) P. Kumm.
Derivation of name: Dry- means "oak" and inus means
"pertaining or belonging to." Oak is a common substrate for
Synonyms: Agaricus dryinus Pers.
Common name(s): Veiled oyster.
Occurrence on wood substrate: Saprobic/parasitic;
solitary to several on decaying logs, stumps, and trunks of
deciduous trees, also on trunks of living trees; July through
Dimensions: Caps 4-12 cm wide; stipes 4-10 cm long and
1-3 cm thick.
Cap: Dry; white to cream when young, ages with
yellowish tints or bruises yellow where damaged;
cottony-hairy, then scaly
in age; veil
fragments often on
Gills: Decurrent; white, becoming yellowish with age.
Spore print: White.
Stipe: Central to eccentric; whitish.
Veil: Whitish partial veil leaving membranous ring on upper
stalk which may disappear with age.
Comments: This is the only Pleurotus species with a veil.
More information at MushroomExpert.com:
Pleurotus dryinus. Photo ©
John Plischke III.
Figure 2. A collection of veiled oyster specimens. The
yellowish discoloration on the specimen on the far right
appears to be due to bruising or damage of some other
© Steve Nelsen.
Figure 3. Veiled oyster has decurrent gills, a ring, and an
overall white color. Photo © William Roody.