How to identify Giant Funnel

To correctly identify Giant Funnel (Leucopaxillus giganteus), 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.

   Initially convex with an inrolled margin, quickly becoming broadly infundibuliform (funnel-shaped) with a depressed center and often wavy or lobed margins. Color ranges from white to cream, buff, or pale tan, often becoming yellowish or brownish with age or in the center. The surface is smooth, dry, and sometimes slightly felty when young. Size can be immense, ranging from 10 to 50 cm (4 to 20 inches) in diameter, occasionally larger.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   Adnate to slightly decurrent, very crowded, narrow, and often forking. Color is white to cream, becoming slightly yellowish with age. They are easily separable from the cap flesh.

3. 3

   Stem

   Length, shape, surface, and any ring.

   Stout and solid, typically central but can be eccentric. It is cylindrical or slightly tapering towards the base, often short in relation to the cap diameter. Color is white to cream, smooth or finely fibrillose, and lacks a ring or volva. Dimensions are usually 3-10 cm (1.2-4 inches) long and 2-5 cm (0.8-2 inches) thick.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   Thick, firm, white, and unchanging when cut. It has a mild, sometimes slightly mealy or indistinct odor and taste.

5. 5

   Fruiting body

   Overall growth pattern.

   Large, robust, and fleshy, typically growing in rings or arcs.

6. 6

   Habitat

   Where it grows and on what substrate.

   Saprobic, growing terrestrially on decaying organic matter, often in nutrient-rich soils. Found in grasslands, pastures, meadows, open woodlands (especially deciduous or mixed forests), and along forest edges. It frequently forms large fairy rings or arcs.

Key Facts

Cap surfaces

Smooth, dry, sometimes slightly felty.

Growth Form

Solitary, scattered, or in large fairy rings/arcs.

Spore Print

White to cream.

Body color

White, cream, buff, pale tan.

Odor

Mild, sometimes slightly mealy.

Flesh bruises

Does not bruise.

Height

3-10 cm (stem length)

Cap Diameter

10-50 cm (occasionally larger)

Fruit body characteristics

• Gill attachment: Adnate to slightly decurrent.
• Stem shape: Cylindrical or slightly tapering towards the base.
• Stem surface: Smooth or finely fibrillose.
• Ring: Absent.
• Stem cross-section: Solid.

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