How to identify Ringless Honey Mushroom

To correctly identify Ringless Honey Mushroom (Desarmillaria tabescens), check each of these features in order. Misidentification is the most common cause of mushroom poisoning, so cross-reference multiple sources.

Step-by-step identification

1. 1

   Cap

   Shape, color, surface texture, and diameter.

   Caps are 2-10 cm (0.8-4 inches) in diameter, convex to broadly convex, flattening with age, often with a central umbo. The surface is dry, typically covered with small, dark, appressed scales, especially when young, which may disappear with age or rain. Color varies from honey-yellow to reddish-brown, often darker towards the center.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   Adnate to subdecurrent, crowded, and whitish to cream-colored when young, becoming yellowish to pinkish-buff with age, sometimes developing rusty spots. They are not bioluminescent.

3. 3

   Stem

   Length, shape, surface, and any ring.

   Stems are 5-15 cm (2-6 inches) long and 0.5-1.5 cm (0.2-0.6 inches) thick, tapering slightly towards the base or sometimes swollen. They are fibrous, tough, and concolorous with the cap or paler, often darkening towards the base. Crucially, there is no annulus (ring) present, which distinguishes it from Armillaria species. The base of the stem may be slightly fuzzy or hairy.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   White to pale yellowish, firm, and relatively thin. It does not change color when cut or bruised.

5. 5

   Fruiting body

   Overall growth pattern.

   Typically grows in dense clusters (cespitose) at the base of deciduous trees, on stumps, or from buried wood. The overall color ranges from yellowish-brown to reddish-brown.

6. 6

   Habitat

   Where it grows and on what substrate.

   Saprobic and parasitic on the roots and bases of various deciduous trees, occasionally conifers. It causes a white rot. Found in woodlands, parks, and gardens.

Key Facts

Cap surfaces

Dry, scaly (especially when young), smooth with age.

Growth Form

Cespitose (clustered).

Spore Print

White to cream.

Body color

Yellowish-brown to reddish-brown.

Odor

Mild, pleasant, mushroomy.

Flesh bruises

No color change.

Height

5-15 cm (2-6 inches).

Cap Diameter

2-10 cm (0.8-4 inches).

Fruit body characteristics

• Gill attachment: Adnate to subdecurrent.
• Stem shape: Cylindrical, often tapering slightly towards the base, sometimes swollen at the base.
• Stem surface: Fibrous, smooth or finely striate, often darkening towards the base.
• Ring: Absent (this is a key distinguishing feature).
• Stem cross-section: Solid, becoming pithy with age.

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