Sickener

Russula emetica

Also known as: Emetic Russula, Vomiting Russula

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Edibility poisonous
Phylum Basidiomycota
Family Russulaceae
Conservation Least Concern

Complete Taxonomy

Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Russulales
Family: Russulaceae
Genus: Russula
Species: R. emetica

Description

Russula emetica, aptly named the sickener, is a toxic mushroom that causes severe gastrointestinal distress if consumed. Its bright red cap makes it conspicuous in forests, particularly near conifers and in boggy areas. While not deadly, it causes violent vomiting and diarrhea. The name "emetica" means "causing vomiting." It's part of a large, difficult-to-identify genus where many species require microscopic examination.

Physical Characteristics

Cap Shape: Convex becoming flat or slightly depressed
Cap Color: Bright scarlet to blood-red, may fade to pinkish; 4-10 cm diameter
Size: 4-10 cm diameter
Gill Attachment: Adnexed to free, white to pale cream
Spore Print: White to pale cream
Stipe: White, cylindrical, fragile, sometimes flushed pink; 4-8 cm tall
Habitat: Mycorrhizal with conifers, especially in boggy areas
Fruiting Season: Summer to fall

Distribution

Northern Hemisphere in temperate and boreal regions

Habitat

Forms ectomycorrhizal associations with conifers, particularly pine and spruce, in acidic soils and boggy woodland.

Ecological Role

Forms ectomycorrhizal partnerships with coniferous trees. Important in nutrient cycling in boreal and temperate coniferous forests.

⚠️ Toxicity Warning

Causes severe vomiting and diarrhea within 30 minutes to 2 hours. Not lethal but extremely unpleasant. Contains unidentified toxins that irritate gastrointestinal tract.

Cultural Significance

Classic example of toxic mushroom. Name reflects its emetic properties. Used in mycology education to demonstrate Russula identification challenges.

Fascinating Facts

  • Name literally means "causing vomiting"
  • Taste test (spit out, don't swallow) reveals hot, peppery, burning taste
  • Bright red color warns of toxicity
  • Flesh and stipe do not discolor when damaged
  • Part of notoriously difficult genus to identify
  • Over 750 Russula species worldwide
  • Fragile - breaks like chalk
  • Some Russula species edible; identification critical