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Omphalotus olearius

Common Name(s):

Previously known as:

  • Clitocybe illudens
Phonetic Spelling
om-fah-LOW-tus oh-LAIR-ee-us
This plant has medium severity poison characteristics.
See below
Description

Jack-o-lantern mushroom is quite noticeable due to its color, size and occurrence in clusters near trees or stumps. It is most commonly found in forest or natural areas, sometimes in landscapes. It appears in clusters of up to 15-20 mushrooms usually at the base of a living oak or from stumps or buried wood (roots), occasionally on other deciduous trees. It is bioluminescent.  The native North American species of this mushroom is O. illudens

Quick ID:

  • Cap: Orange to yellow-orange, up to 4 inches in diameter
  • Gills: Yellow-orange, decurrent on the stalk
  • Stalk: Orange to yellow-orange, usually curved
  • Annulus: None
  • Spore Print: White

 

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#poisonous#poisonous mushrooms#mushrooms
 
Cultivars / Varieties:
Tags:
#poisonous#poisonous mushrooms#mushrooms
  • Attributes:
    Genus:
    Omphalotus
    Species:
    olearius
    Family:
    Marasmiaceae
    Country Or Region Of Origin:
    Europe
    Edibility:
    NOT Edible
  • Whole Plant Traits:
    Plant Type:
    Mushroom
    Poisonous
  • Leaves:
    Hairs Present:
    No
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Problems:
    Poisonous to Humans
    Problem for Children
  • Poisonous to Humans:
    Poison Severity:
    Medium
    Poison Symptoms:
    Patient experiences severe stomach ache, headache, sweating , nausea, exhaustion, vomiting, bitter taste, salivation, and a cold feeling. Onset of symptoms is usually 1-3 hours after ingestion. Most patients recover in 5-6 days.
    Poison Toxic Principle:
    Unknown
    Causes Contact Dermatitis:
    No
    Poison Part:
    Fruits
    Stems