Deadly dapperling vs shaggy parasol: small, scaly and deadly

Quick answer

A cap rarely over 2 inches and only a faint, cottony ring zone mark the deadly dapperling; the shaggy parasol has a cap 3 to 8 inches across, a thick, double-edged ring that slides on the stem, an abrupt bulb at the base, and flesh that turns orange to red when cut. Both print white and both grow in gardens and lawns.

Deadly lookalike

The deadly dapperling can be fatal.

Unlike the shaggy parasol, the deadly dapperling (Lepiota subincarnata) contains amatoxins, which stop protein production by blocking the enzyme RNA polymerase II. The University of British Columbia's Mushrooms Up! guide records abdominal pain, vomiting and watery diarrhea 6 to 12 hours (up to 36 hours) after eating; the symptoms ease after about a day, then return around 72 hours with signs of liver failure, and in fatal cases death follows 7 to 10 days after the first symptoms. In 1988 a man near Vancouver died after eating lawn mushrooms he took for fairy ring mushrooms.

If someone has eaten a wild mushroom and feels unwell, or may have eaten one of these, call poison control now: 1-800-222-1222 in the US. Do not wait for symptoms.

Side by side

The tell for each

Lepiota subincarnata

Photo coming

Deadly
Deadly DapperlingLepiota subincarnata

The tellSmall pale cap broken into concentric pinkish brown scales, white free gills, and a white spore print.

Two young shaggy parasols with rounded, coarsely scaled caps on pale stems in leaf litter
Edible, upsets some people
Shaggy ParasolChlorophyllum rhacodes

The tellCoarse, shaggy brown scales on a pale cap, a smooth stem with an abrupt bulb, and flesh that turns orange to red when cut.

How they differ

Differences between the deadly dapperling and the shaggy parasol
FeatureDeadly DapperlingShaggy Parasol
Cap sizeDeadly Dapperling0.75 to 2 inches (2 to 5 cm).Shaggy Parasol3 to 8 inches (7.5 to 20 cm).
RingDeadly DapperlingA faint, cottony ring zone.Shaggy ParasolA thick, double-edged movable ring.
Cut fleshDeadly DapperlingThin and whitish.Shaggy ParasolTurns orange to red, especially in the stem.
Cap scalesDeadly DapperlingSmall concentric pinkish brown scales.Shaggy ParasolCoarse, shaggy, upturned brown scales.
Spore printDeadly DapperlingWhite.Shaggy ParasolWhite.

FAQ

Common questions

Do the deadly dapperling and the shaggy parasol grow in the same places?

They can. Both turn up in gardens, lawns and landscaped beds with rich soil or leaf litter.

What is a dapperling?

A common name for small Lepiota species. Several, including Lepiota subincarnata, contain the same amatoxins as the death cap.

Sources

Where these facts come from

  1. Lepiota subincarnata, deadly parasol (Mushrooms Up!)

    Beaty Biodiversity Museum, University of British Columbia

  2. Chlorophyllum rhacodes

    MushroomExpert.com

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