Yellow stainer

Agaricus xanthodermus

A species of Agaricus. Also known as Yellowing staining agaricus.

The yellow stainer mushroom is found throughout North America and Europe, and has also been introduced to Australia. A key characteristic that sets it apart from other common white mushrooms is the vivid chrome yellow hue it develops when damaged. This mushroom is recognized as toxic, inducing symptoms such as abdominal cramps, nausea, and vomiting. Regrettably, it is frequently consumed by mistake due to its resemblance to several edible white mushroom varieties.

Attributes of Yellow stainer

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Cap Diameter
5 - 17 cm
Height
5 - 20 cm
Cap
Cap 6 - 15 cm across; round to convex, flat; white to cream, gray, brownish; surface smooth
Cap Shape
Convex, Flat
Cap Surfaces
Smooth, Fibrillose-scaly
Gills
Free; crowded; pinkish gray to dark chocolate-brown
Gill Attachment
Free
Stem
Stem 4 - 15 cm long, 1 - 3 cm thick; bulbous; whitish; turns bright chrome yellow when cut
Stem Shapes
Club Shaped
Stem Surfaces
Smooth
Flesh
White; turns yellowing when sliced
Ring
With Ring
Spore Print Color
Chocolate-brown
Odor
Chemical-like with phenolic, inky notes.
Body Color
BrownYellowWhite
Flesh Bruises
Discolor to yellowish
Growth Form
Scattered, Gregarious
Nutrient Gathering
Saprophytic
Substrate
On soil
You can find Yellow stainer by these plants
Pines
Occurence Habitats
Meadows, Disturbed Lands, Coniferous Woodland, Deciduous Woodland
Species Status
Widely distributed
Endangered Species
No

Scientific Classification of Yellow stainer

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Phylum
Club fungi
Class
Mushroom-forming fungi
Order
Gilled fungi
Family
Agaricaceae
Genus
Agaricus
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Toxicity and Edibility of Yellow stainer

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Is Yellow stainer Toxic?

The yellow stainer mushroom is frequently found in gardens, compost piles, and wooded areas from late summer through autumn. It's easily identified by a distinct yellow stain at the bottom of its stem. Ingesting this mushroom can lead to various health issues, including stomach upset, dizziness, blurred vision, and problems with blood flow. Exercise caution, as it bears a resemblance to edible mushrooms from the Agaricus genus, yet it is poisonous if eaten.

Type of poisoning
Gastrointestinal
Toxic Severity
Low to high toxicity
Incubation Period
0.5-6 hours
Poisoning Symptoms
Digestive issues, vertigo, vision complications, blood circulation troubles.

Is Yellow stainer Toxic to Dogs?

Yellow stainer can be dangerous to dogs. If your pet has consumed this mushroom, seek immediate veterinary attention. Symptoms may vary, but early intervention is crucial for the best outcome.