Mycena luteopallens

Scientific nameMycena luteopallens Peck 
Derivation of name:  Lute - means "yellow" and pallens
means "pale."
Common name(s):  Walnut mycena.
Phylum:   Basidiomycota
Order:   Agaricales
Family:   Mycenaceae
Occurrence on wood substrate:  Saprobic; fruiting on
remains of old hickory nuts and walnuts; August to
November. 
Dimensions:  Caps 8-15 mm wide; stipes up to 10 cm tall
and 1-1.5 mm thick.   
Cap: Orange to yellow, fading to whitish.     
Gills: Attached; yellowish to pink-tinged.
Spore print:White.
Stipe: Orangish near apex, yellowish below; slender; with
long coarse hairs at the base.
Veil: Absent.
Edibility: Inedible.
Comments: If not for the distinctive habitat, this small
Mycena could present an identification challenge. It still is
when the nuts are well-decayed. l will admit that for a
website devoted to fungi growing on wood, hickory nuts
might be a bit of a stretch but it's a beautiful and easily
recognized fungus when found growing on these "woody"
substrates.

More information at MushroomExpert.com:


Figure 1. A cluster of Mycena luteopallens on a walnut
shell. Photo © Gary Emberger.


Figure 2. The other side of the nut in Figure 1.
Photo © Gary Emberger.


Figure 3.The gills are almost distant and the stipe is
typically orangish at the top and yellow below. The yellow
of the caps seemed to fade even during the time I was
photographing the specimens. Photo © Gary Emberger.


Figure 4. Long, coarse hairs at the base of the stipes.
Photo © Gary Emberger.

 

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