Dangerous Look-alikes
What are look-alikes
Look-alikes are mushroom species that resemble each other externally but differ in edibility. Particularly dangerous are pairs where one species is edible and the other is deadly poisonous.
Rule: before collecting any edible mushroom, study all its dangerous look-alikes.
Pair 1: Field mushroom ↔ Death cap
| Feature | Field mushroom (Agaricus campestris) | Death cap (Amanita phalloides) |
|---|---|---|
| Gills | Pink → brown → black | White (always!) |
| Stem base | No volva | Sac-like volva at the base |
| Ring | Simple, thin | Double, pendulous |
| Cap | White, no greenish tint | Often with greenish or olive tint |
| Smell | Pleasant, mushroomy | Faint; unpleasant when old |
| Edibility | Edible | DEADLY |
Key difference: White gills + volva = DANGER. Field mushrooms never have white gills when mature.
More details: Field mushroom | Death cap
Pair 2: Caesar’s mushroom ↔ Death cap / Fly agaric
| Feature | Caesar’s mushroom (Amanita caesarea) | Death cap (A. phalloides) | Fly agaric (A. muscaria) |
|---|---|---|---|
| Cap | Orange-red, smooth | Greenish/olive | Red with white warts |
| Gills | Yellow | White | White |
| Stem | Yellow | White | White |
| Volva | White, sac-like | White, sac-like | Warty, loose |
| Edibility | Edible (delicacy) | DEADLY | Toxic |
Key difference: Caesar’s mushroom has yellow gills and stem. If they are white — it is not Caesar’s mushroom!
More details: Caesar’s mushroom | Fly agaric
Pair 3: Chanterelle ↔ Jack-o’-lantern
| Feature | Chanterelle (Cantharellus cibarius) | Jack-o’-lantern (Omphalotus olearius) |
|---|---|---|
| Growth | On soil, solitary or in groups | On stumps/roots, often in clusters |
| Gills | Ridges (false gills), thick, forked | True thin gills |
| Colour | Yellow, uniform | Orange-yellow, brighter |
| Flesh | Firm, yellowish | Thinner, orange |
| Glow | None | Bioluminescent (glows in the dark) |
| Size | 3–10 cm | Up to 12–15 cm, larger |
| Edibility | Edible (prized) | Toxic |
Key difference: Chanterelles grow on soil and have ridges instead of true gills. Jack-o’-lanterns grow on wood (stumps, olive and oak roots) and have true gills.
More details: Chanterelle | Jack-o’-lantern
Pair 4: Parasol mushroom ↔ Small Lepiota species
| Feature | Parasol (Macrolepiota procera) | Small Lepiota (Lepiota spp.) |
|---|---|---|
| Size | Large: cap 10–30 cm | Small: cap < 5 cm |
| Stem | Long (20–40 cm), with a double movable ring | Short, ring fixed or absent |
| Scales | Large, concentric | Small |
| Edibility | Edible | Some are deadly (contain amatoxins) |
Key difference: Size! If a “parasol” is small (cap < 10 cm) — don’t pick it. A safe parasol mushroom is always large.
More details: Parasol mushroom
Pair 5: Honey fungus ↔ Sulphur tuft
| Feature | Honey fungus (Armillaria mellea) | Sulphur tuft (Hypholoma fasciculare) |
|---|---|---|
| Ring | Present, membranous | Absent (or faint trace) |
| Gills | White/cream → pinkish | Greenish-yellow → olive |
| Taste | Pleasant (after cooking) | Bitter |
| Cap colour | Honey-yellow to brown | Sulphur-yellow, vivid |
| Edibility | Conditionally edible (must be boiled) | Toxic |
Key difference: No ring + greenish gills + bitter taste = sulphur tuft (TOXIC).
More details: Honey fungus
Pair 6: Morel ↔ False morel
| Feature | Morel (Morchella esculenta) | False morel (Gyromitra esculenta) |
|---|---|---|
| Cap | Honeycomb-like (pitted), hollow inside | Wrinkled, brain-like, not hollow |
| Shape | Cone-shaped, symmetrical | Irregular, amorphous |
| Stem | Attached to cap along its full length | Attached only at the top |
| Edibility | Conditionally edible (must be cooked!) | Deadly (gyromitrin) |
Key difference: Honeycomb (pits) vs. wrinkles (brain). If the cap looks like a brain — it is a FALSE MOREL and it is dangerous!
More details: Morel | False morel
Pair 7: Field mushroom ↔ Yellow-staining mushroom
| Feature | Field mushroom (Agaricus campestris) | Yellow-staining mushroom (Agaricus xanthodermus) |
|---|---|---|
| Stem base | No colour change | Bright chrome-yellow when cut |
| Smell | Pleasant, mushroomy | Phenolic (ink, carbolic soap) |
| Cap | White, smooth | White, may be greyish |
| Edibility | Edible | Toxic |
Key difference: Cut the stem base — instant chrome-yellow staining + unpleasant phenolic smell = yellow-staining mushroom (TOXIC).
More details: Field mushroom | Yellow-staining mushroom
Pair 8: Porcini ↔ Satan’s bolete
| Feature | Porcini (Boletus edulis) | Satan’s bolete (Rubroboletus satanas) |
|---|---|---|
| Tubes | White → yellow → greenish | Red / blood-red |
| Stem | Thick, with white reticulation | Thick, with red reticulation on yellow background |
| Flesh when cut | Does not change colour (white) | Blues rapidly |
| Cap | Brown, velvety | Greyish-white, smooth |
| Smell | Pleasant, mushroomy | In old specimens — unpleasant, fetid |
| Edibility | Edible (delicacy) | Toxic |
Key difference: Red tube layer + rapid bluing of flesh = DANGER. Porcini always has a light-coloured tube layer and its flesh does not blue.
More details: Porcini
Universal rules for distinguishing
- Always check the base of the stem — a volva indicates the genus Amanita
- Gill colour — one of the most reliable features
- Substrate — growing on soil or on wood?
- Size — in many pairs, the dangerous look-alike differs in size
- Milk — presence and colour
- Spore print — leave the cap on white paper for a few hours
When in any doubt — leave the mushroom. See Basic safety rules.
Sources
- Courtecuisse R., Duhem B. — Mushrooms and Toadstools of Britain and Europe
- Gerhardt E. — Guia de Cogumelos (Portuguese edition)
- Sociedade Portuguesa de Micologia — field excursion materials
- MushroomExpert.com — species descriptions
- Bon M. — The Mushrooms and Toadstools of Britain and North-western Europe
Disclaimer: Identifying mushrooms from descriptions and photographs on the internet is not a substitute for consulting an experienced mycologist. The authors assume no responsibility for the consequences of collecting and consuming mushrooms.
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