How to tell Rosy brittlegill from Sickener
How they differ, how to recognize them and which is more dangerous — a mushroom comparison
Warning: Sickener(Russula emetica)
POISONOUS
Eating it causes poisoning. Do not pick it unless you have identified it with certainty.
Gastrointestinal poisoning of moderate severity — the most common serious mushroom poisoning among beginners in Europe and Ukraine.
Active toxins: heat-labile sesquiterpenes (including russulin), which irritate the lining of the stomach and intestines. Muscarine and phenolic irritants may also contribute, but the exact makeup of the toxic cocktail has not been fully established.
Latency period: short — 30 minutes — 2 hours (typical of gastrointestinal poisonings).
Symptoms: Intense nausea and repeated vomiting (often 5-10 episodes) Watery diarrhea, sometimes with mucus Severe cramping abdominal pain Profuse sweating, tachycardia, hypotension from dehydration Dizziness, headache In children — rapid dehydration with a risk of collapse
Duration: 6-24 hours in ordinary cases, up to 2-3 days in severe ones. Full recovery usually takes 3-5 days.
Deaths among healthy adults are practically unknown, but deaths from dehydration have been described in children under 5 and in people over 70 with cardiovascular disease.
First aid: 1. Call an ambulance — 112 or your local emergency number, without fail. 2. Do NOT induce vomiting (the person is already vomiting). 3. Rehydration — oral rehydration salts (Regidron, Humana Electrolyte) if the person can swallow; IV fluids in hospital for severe dehydration. 4. Keep a sample of the mushroom so a toxicologist can identify it. 5. Loperamide is CONTRAINDICATED in the first 12 h (it slows the elimination of toxins). 6. Activated charcoal — only if a doctor or poison center advises it.
The prognosis is good with adequate rehydration; mortality <0.5%.
Prevention — the golden rule of brittlegill foraging: acrid, burning-hot brittlegills — DO NOT EAT. The tongue test (a tiny 1-2 mm piece from the gill edge, 30 sec, spit it out) saves you from this poisoning.
If you suspect poisoning, call an ambulance immediately: 112 (the European emergency number) or your local emergency number
The short answer
Rosy brittlegill and Sickener look alike, so they're easy to mix up — but Rosy brittlegill is edible, while Sickener is poisonous. The main visible difference: use: Rosy brittlegill — cook fresh, pickling, Sickener — not eaten. The mushrooms also differ in the following features: size, cap color, cap surface. If you have even the slightest doubt, leave the mushroom be.

Sickener
Russula emetica

Rosy brittlegill
Russula rosea
📊 Comparing characteristics
⚠ Highlighted rows are the key differences between the edible and the dangerous mushroom
| Characteristic | Sickener | Rosy brittlegill |
|---|---|---|
| ⚠ Edibility class | Sickener Poisonous | Rosy brittlegill Edible |
| Season | Sickener SummerAutumn | Rosy brittlegill SummerAutumn |
| ⚠ Use | Sickener Not eaten | Rosy brittlegill Cook freshPickling |
| ⚠ Size | Sickener Small (up to 5 cm) | Rosy brittlegill Medium (5–15 cm) |
| ⚠ Cap color | Sickener Red | Rosy brittlegill PinkRed |
| Cap shape | Sickener Convex | Rosy brittlegill Convex |
| ⚠ Cap surface | Sickener Slimy | Rosy brittlegill Dry |
| ⚠ Taste | Sickener Acrid | Rosy brittlegill Mild |
| ⚠ Smell | Sickener PleasantOdorless | Rosy brittlegill Pleasant |
| Flesh color change | Sickener No change | Rosy brittlegill No change |
| Hymenophore | Sickener Gilled | Rosy brittlegill Gilled |
| Stem | Sickener Central | Rosy brittlegill Central |
| Ring (veil) | Sickener No ring | Rosy brittlegill No ring |
| Volva | Sickener No volva | Rosy brittlegill No volva |
| ⚠ Substrate | Sickener SoilMoss | Rosy brittlegill Soil |
| Nutrition type | Sickener Mycorrhizal | Rosy brittlegill Mycorrhizal |
| ⚠ Partner trees | Sickener PineSpruce | Rosy brittlegill OakBeechBirch |
📅 Seasonality
Sickener
Fruiting season
July – October
Rosy brittlegill
Fruiting season
July – October
🔬 Morphology
Cap
Sickener
Cap 3-10 cm across, when young hemispherical, with age becoming flat and spread out with a slightly depressed center. The skin is smooth and shiny, distinctly slimy in wet weather, dry and matte in dry weather. The skin peels off EASILY, COMPLETELY, all the way to the center — a diagnostic feature. Color: bright red, blood-red, raspberry-red, deeper in the center; mature caps fade to pink with pale blotches. In mature specimens the margin has fine radial grooves.
Rosy brittlegill
Cap 5-12 cm across, when young convex with an inrolled margin, with age becoming flattened with a slightly depressed center. The cap skin is firm, dry, matte, faintly velvety-felty, peels only with difficulty and incompletely — minimally or not at all. Color intensely pink, coral-pink, red-pink, with characteristic cream-colored faded patches, deeper in the center. Old fruiting bodies fade markedly to cream, with pink patches surviving only at the edges.
Hymenophore
Sickener
Gilled hymenophore — the gills are attached or free from the stem, crowded, thin, fleshy. Color: white to creamy white, cream with age. Spore print white — a diagnostic feature.
Rosy brittlegill
Gilled hymenophore — gills adnate or free from the stem, moderately crowded, thin, brittle. Color white at first, cream with a pale ochre tinge with age. Spore print creamy white.
Stem
Sickener
Stem 4-8 cm tall, 1-2.5 cm thick, firm, fleshy, cylindrical, hollow inside in old specimens. Color: pure white, often with a faint pinkish tint toward the base. Surface smooth with fine lengthwise wrinkles. No ring.
Rosy brittlegill
Stem 4-7 cm tall, 1.5-3 cm thick, very firm, fleshy, cylindrical, with a small cavity in old specimens. Color white, often with a faint pink tinge toward the base or along the whole stem. Surface dry and matte with fine lengthwise wrinkles. No ring.
Flesh
Sickener
Flesh firm, brittle, white, does not change color when cut. Smell faintly fruity-coconut in young specimens, faintly unpleasant in mature ones, taste distinctly burning, acrid and bitter: a tiny piece (1-2 mm) on the tongue causes a strong burning sensation within 5-10 seconds — this is a diagnostic test that saves you from poisoning. Spit it out right away; do not swallow.
Rosy brittlegill
Flesh very firm, fleshy, brittle, pure white, does not change color when cut. Smell pleasant but nondescript. Taste mild, often recalling cedarwood pencils; some fruiting bodies have a subtle bitterish note in the gills — this is normal.
Smell
Sickener
Faintly fruity-coconut in young specimens; in mature ones neutral or slightly unpleasant.
Rosy brittlegill
Pleasant but nondescript. In this species the cedar note is in the taste, not the smell: it often recalls cedarwood pencils.
📍 Habitats
Sickener
Rosy brittlegill
👀 Similar mushrooms — don't mix them up!
❓ Frequently asked questions
Can Rosy brittlegill and Sickener be mixed up?
How to tell Rosy brittlegill from Sickener?
Which is more dangerous — Rosy brittlegill or Sickener?
Is Sickener edible?
When do Rosy brittlegill and Sickener grow?
Sources
- [1]Вікіпедія (українська)
- [2]Атлас грибів України, Зеров Д.К. (1979)
- [3]MycoBank Database
- [4]Index Fungorum
- [5]GBIF
- [6]iNaturalist Ukraine