The Living Fungi LibraryFungi LibraryMushroom Forage Map
FungiHerbs
Open field map
Orange Caesar's mushroom emerging from a white volva
Choice edibleexpert-only

Caesar's Mushroom

Amanita caesarea

A brilliant orange Amanita with yellow gills and a large white sac volva, prized in southern Europe since Roman times.

Photo: Mario Bassini, CC BY
Compiled by Mushroom Forage Map field deskExpert review pendingContent checked
Identification warning

It is an Amanita. Unopened eggs resemble deadly death cap eggs; cut vertically and confirm yellow internal gills.

Season
Summer to autumn
Habitat
Oak and chestnut woods of southern Europe and North Africa
Underside
Free golden-yellow gills
Spore evidence
White

Where it grows

Tracked records and known growing zone

Explore on the field map
Loading map…
Squares: where people recorded it, brighter where more people did
Verified records
749
People who recorded it
477
Most records (northern hemisphere)
Aug–Oct
Records span
1997–2026

Research-grade iNaturalist records, snapshot Aug 27, 2026. The growing zone combines areas where different people have repeatedly verified it. Records show where people looked and found it, not current abundance or permission to gather.

Observation season

When field records occur

Choose a hemisphere · All recorded years; not a current forecast.

Choose the hemisphere you want to study. Country detection is approximate and some countries span the equator.

Compare before concluding

Lookalikes to rule out

Fly agaric has white gills, white stem, and white warts on a red cap.

Death Cap

deadly

Death cap eggs show white internal gills when cut; Caesar's eggs show yellow.

Identification

The cap is smooth, bright orange to red, usually without warts. Gills and stem are golden yellow, and a large white, sac-like volva encloses the base. Young specimens emerge from a white egg; cut vertically, the inside shows orange and yellow.

Uses and ecology

Caesar's mushroom is mycorrhizal with oaks and chestnut in warm regions. It is protected or regulated in some countries. Its egg stage is especially valued, which is when confusion with deadly Amanita eggs is most dangerous.

Memorable fact

Roman emperors reportedly reserved this mushroom for themselves, giving it the name Caesar's.

Sources

Never eat a mushroom from this page alone

Confirm identity using the whole specimen, multiple reputable sources, and a qualified local expert. Identified edible species still require appropriate preparation. Cooking does not make a poisonous mushroom safe.

Safety and poison response
Back to the fungi library