Scientific names: Crepidotus mollis (Fr.) Staude;
Crepidotus applanatus (Pers.) P. Kumm.; Crepidotus
crocophyllus (Berk.) Sacc.
Derivation of name: Moll- means "soft." Applanatus
"flattened." Crocophyllus means "saffron-colored
Common name(s): Crepidotus applanatus is called the
Flat Crep; Crepidotus mollis is called the Jelly Crep, and
crocophyllus is called the Orange Crep.
Occurrence on wood substrate: Saprobic; clustered,
overlapping on decaying hardwoods (rarely
conifers); July through September.
Dimensions: See figure captions.
Cap: See figure captions.
Gills: Radiating from point of attachment.
Spore print: Brownish.
Stipe: Absent, attached to substrate by a short, hairy plug
Comments: Miller indicates the presence of over 100
of Crepidotus in North America sharing traits
such as thin
flesh, convex to fan-shaped caps,
inhabiting wood, and having brownish
spores. Most require
the use of a microscope to identify
them. Two common species and one uncommon but
distinctive species (C. crocophyllus) are described on
More information at TomVolkFungi.net
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Figure 1. Crepidotus mollis. Caps are 1-8 cm wide; color
from olive-brown to ochraceous whitish. Caps
with dark brown fibrous scales.
at first but becoming brownish.
Figure 2. Another view of Crepidotus mollis.
Photo © John
Figure 3. Crepidotus mollis specimens photographed at
the 2007 NEMF foray. Photo © Gary Emberger.
Figure 4. Crepidotus mollis is called the Jelly crep because
the gelatinous upper layer of the cap
can be stretched. When
I gently pulled apart the cap of the specimen
above, the gelatinous layer stretched to fill the void.
Photo © Gary Emberger.
Same specimen as in Figure 4 but shown from
below. The stretched gelatinous layer spans the space
between the gills. Photo © Gary Emberger.
Figure 6. Crepidotus applanatus. Caps are 1-4 cm wide;
white when young, becoming brownish with age.
hairless or minutely downy. Gills white at first,
becoming brown. Photo © John Plischke III.
Figure 7. Crepidotus applanatus photographed at the 2007
NEMF foray. Photo © Gary Emberger.
Crepidotus crocophyllus with saffron-orange gills
and hairy cap, photographed at the 2007 NEMF foray.
Caps 1-4 cm wide, orange to orange-brown and minutely
scaly. Photo © Gary Emberger.