How to identify Rooting Shank

To correctly identify Rooting Shank (Hymenopellis radicata), 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.

   The cap is typically smooth, convex to flattened, and ranges in color from pale tan to dark brown. The surface can be slightly sticky when moist.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are adnate to decurrent, widely spaced, and white to cream-colored.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is typically long and slender, often tapering towards the base. It is lighter in color than the cap and has a distinctive rooting extension that penetrates the soil.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   The flesh is white and does not change color when bruised.

5. 5

   Fruiting body

   Overall growth pattern.

   The fruiting body of Hymenopellis radicata consists of a cap and a stem, with a distinctive rooting base.

6. 6

   Habitat

   Where it grows and on what substrate.

   Hymenopellis radicata is commonly found in wooded areas, particularly near decaying wood or buried roots. It often grows singly or in small clusters.

Key Facts

Cap surfaces

Smooth, slightly sticky when moist

Growth Form

Pileate (cap and stem)

Spore Print

White

Body color

Brown cap, lighter stem

Odor

Mild

Flesh bruises

Does not change color

Height

5-15 cm

Cap Diameter

3-10 cm

Fruit body characteristics

• Gill attachment: Adnate to decurrent
• Stem shape: Tapering towards the base
• Stem surface: Smooth
• Ring: Absent
• Stem cross-section: Solid

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