Onion-stalk Parasol
Leucocoprinus cepistipes
Identification: Likely Toxic *Leucocoprinus* Species
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Key Features
- Cap pale cream to white with deep radial striations
- Distinct
- darker central umbo (nipple)
- Gills white
- crowded
- and free from the stem
- Stem long
- slender
- white
- lacking a visible ring
- Grows on rich organic substrate/soil
Color:
Pale cream/white cap and stem; brownish umbo
Smell:
Unknown
Growth Pattern:
Clustered
Environment:
Soil/Organic debris
Habitat & Distribution
Habitat:
Mulch, potting soil, or rich organic debris
Distribution:
Cosmopolitan (Widespread globally)
Seasonality:
Warm months outdoors; year-round indoors
Economic Value
Market Demand:
None - toxic
Price Range:
N/A
Commercial Use:
None
Toxicity Information
Symptoms:
- Gastrointestinal distress
- Nausea and vomiting
- Diarrhea
- Abdominal cramps
Onset Time:
30 minutes to 3 hours
First Aid:
- Seek immediate medical attention
- Contact poison control immediately
Emergency Contacts:
- 911 (US)
- Poison Help (US): 1-800-222-1222
Similar Species
Stinking Dapperling
Lepiota cristata
Key Differences:
- Cap surface breaks into fine scales
- Often possesses a distinct, movable ring
- Strong, unpleasant, pungent odor
Yellow Houseplant Mushroom
Leucocoprinus birnbaumii
Key Differences:
- Cap and stem typically bright lemon yellow
- Often more robust structure
Amanita species (Small white forms)
Amanita spp.
Key Differences:
- Presence of a volva (sac-like structure) at the stem base
- Gills are consistently white and never free
Recommended Action
Do not handle or consume. Ensure immediate removal from any environment accessible to humans or pets.