Scientific name: Armillaria tabescens (Scop.) Emel
Derivation of name: Tabescens means "decomposing"
referring the activities of this mushroom.
Synonyms: Armillariella tabescens (Scop.) Singer
Common name(s): Ringless honey mushroom.
Occurrence on wood substrate: Parasitic/saprophytic; in
cespitose clusters at the base of living or dead trees (often
oak), stumps, or from buried wood or roots; June through
Dimensions: Caps are 3-10 cm wide; stipes are 5-20 cm
long and 0.4-1.6 cm wide.
Cap: Dry, yellow-brown with darker hairs or tufts of fibers.
Gills: Subdecurrent; whitish, becoming pinkish-brown.
Spore print: White.
White above, darkening to brown near the base.
Edibility: Choice with caution.
Comments: Sometimes occurs in dense cespitose clusters.
Of the Armillaria species, this is the most distinct due to the
lack of a ring.
More information at MushroomExpert.com:
Figure 1. A typical fruiting of Armillaria tabescens. The
specimens in this view are fruiting near a living silver
maple tree, Acer saccharinum.
Photo © Jessica
Although apparently not associated with wood,
these clusters of Armillaria tabescens are undoubtedly
attached to buried wood, most likely the roots of the
in Figure 1. Photo © Jessica Stolze-
Figure 3. The ringless honey mushroom is aptly named,
the stipe does not have an annulus. Photo © John
Figure 4. It is quite common for Armillaria tabescens to
grow in dense cespitose clusters. Photo © Larry Grand.
Figure 5. Sometimes when mushrooms are close together
they deposit spores on adjacent caps. The caps on the
are whitish with spores and serve as a field spore
Photo © William Roody.
Figure 6. A closeup of some of the mushrooms in Figure
showing the white spore deposit.
Photo © William