Morel vs false morel: how to tell them apart

Quick answer

A true morel is hollow: sliced top to bottom, it is one continuous chamber from the tip of the cap to the base of the stem, with the cap fused to the stem along its lower edge; a false morel is stuffed with cottony tissue or divided into folded pockets. The caps differ as well: pits and ridges like a honeycomb on a morel, lobes and wrinkles like a brain on a false morel.

Toxic lookalike

The false morel is toxic.

Unlike the morel, the false morel (Gyromitra esculenta) contains gyromitrin, which breaks down into monomethylhydrazine. The University of British Columbia's Mushrooms Up! guide records symptoms starting 6 to 12 hours after a meal with stomach cramps, vomiting and watery diarrhea, usually resolving in 2 to 5 days; severe cases go on to liver and kidney damage, seizures, coma and, in a few cases, death. The same guide notes that sensitivity varies greatly between people. Heating the mushrooms releases the toxin as a vapor, which is also dangerous to breathe.

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

A yellow morel with a honeycomb-pitted cap standing among green leaves — MorelMorchella esculentoides

A reddish-brown false morel with a folded, brain-like cap on the forest floor — False MorelGyromitra esculenta

How they differ

Differences between the morel and the false morel
Feature	Morel	False Morel
Inside when sliced lengthwise	MorelOne continuous hollow chamber from cap tip to stem base.	False MorelChambered or folded pockets, often with cottony tissue.
Cap surface	MorelPitted and ridged like a honeycomb or sponge.	False MorelWrinkled, lobed and folded like a brain, with no true pits.
Where cap meets stem	MorelThe cap is fused to the stem along its whole lower edge.	False MorelThe lower edge of the cap touches the stem only in places.
Cap color	MorelTan, yellow-brown or gray, with ridges usually paler than the pits.	False MorelReddish brown to dark chestnut, sometimes nearly black.
Shape	MorelEgg-shaped to conical, taller than wide.	False MorelIrregular and lumpy, often as wide as it is tall.
Habitat	MorelDeciduous woods, old orchards and river bottoms, often near dying elms, ash and old apple trees.	False MorelConifer and mixed forests, often under pines, sometimes near melting snow.

FAQ

Common questions

Are false morels poisonous?

Yes. Gyromitra esculenta contains gyromitrin, which the body turns into monomethylhydrazine. Recorded poisonings range from a few days of vomiting and diarrhea to liver and kidney damage, seizures and, rarely, death.

Is a false morel hollow inside?

No. Sliced top to bottom, a false morel shows cottony tissue or several folded chambers. Every true morel, yellow or black, is hollow from the tip of the cap to the base of the stem.

Can you tell a morel from a false morel in a photo?

Often from the cap, since honeycomb pits and brain-like folds look different. A photo of the outside cannot show the inside, where they differ most: every true morel is hollow, a false morel is not.

Sources

Where these facts come from

Gyromitra esculenta
MushroomExpert.com
Morchella esculentoides (yellow morel)
MushroomExpert.com
Morels
Missouri Department of Conservation
Gyromitra esculenta, false morel (Mushrooms Up!)
Beaty Biodiversity Museum, University of British Columbia

Keep checking

Read both pages in full

This page states what field guides record. It is not advice to eat, taste or handle anything, and a photo cannot settle edibility. If someone has eaten a wild mushroom that may be toxic, call poison control (1-800-222-1222 in the US) right away, before symptoms start: the deadliest species act hours later.

More comparisons

A dark brown black morel with a ridged, pitted conical cap rising from dry leaf litter

Black morel vs false morel

Toxic: False Morel

A black morel is hollow from cap tip to stem base, with pits between dark vertical ridges. A false morel is brain-like and cottony inside.

Black morel vs morel

Black morels have dark, mostly vertical ridges and fruit earlier. Yellow morels keep pale ridges in a random honeycomb. Both are hollow inside.

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