How to identify Paddy Straw Mushroom

To correctly identify Paddy Straw Mushroom (Volvariella volvacea), 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 oval to bell-shaped when young, becoming convex to flattened with age. It is typically tan to brown in color and smooth.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are free from the stem, crowded, and white to pinkish in color as they mature.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is white to light brown, smooth, and lacks a ring.

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 has a distinct volva at the base of the stem, which is a remnant of the universal veil.

6. 6

   Habitat

   Where it grows and on what substrate.

   Grows on rice straw and decaying plant matter in warm, humid climates.

Key Facts

Cap surfaces

Smooth

Growth Form

Clustered

Spore Print

Pinkish

Body color

Tan to Brown

Odor

Mild, mushroomy

Flesh bruises

No change

Height

5-20 cm

Cap Diameter

5-15 cm

Fruit body characteristics

• Gill attachment: Free
• Stem shape: Cylindrical
• Stem surface: Smooth
• Ring: Absent
• Stem cross-section: Solid

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