How to identify Japanese Parasol

To correctly identify Japanese Parasol (Mycena interrupta), 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 convex, measuring up to 2 cm in diameter. It is a vibrant blue color, fading to a paler blue or whitish at the margin. The surface is smooth and may be slightly sticky when moist.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are adnate to decurrent, meaning they run down the stem. They are closely spaced and also blue, though they may fade with age.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is slender, hollow, and typically the same color as the cap, though it may be paler towards the base. It measures up to 3 cm in length and is smooth.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   Thin and fragile, with a bluish tint.

5. 5

   Fruiting body

   Overall growth pattern.

   Small, delicate, and brightly colored.

6. 6

   Habitat

   Where it grows and on what substrate.

   Found on decaying wood in rainforests and moist forests.

Key Facts

Cap surfaces

smooth, slightly sticky when moist

Growth Form

gregarious

Spore Print

white

Body color

bright blue, fading to pale blue or whitish

Odor

not distinctive

Flesh bruises

no bruising reaction

Height

up to 3 cm

Cap Diameter

up to 2 cm

Fruit body characteristics

• Gill attachment: adnate to decurrent
• Stem shape: cylindrical
• Stem surface: smooth
• Ring: absent
• Stem cross-section: hollow

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