Observation 5785: Bolbitius Fr.

When: 2007-12-29

Collection location: Buttonwood, south Key Largo, Monroe Co., Florida, USA [Click for map]

Who: Jason Hollinger (jason)

Specimen available

small mushroom scattered on dead pigeon plum (Coccoloba diversifolia), pleasant odor
ST: 20-40×3-4mm, fragile, whitish to brownish and fibrillose like cap, white down at base, solid, white inside
CAP: 10-20mm wide by 10-20mm tall, bell to conic, tip rounded to umbonate, white context with dense light to medium brown scurfy fibrils esp near center, margin thin and somewhat irregular
FLESH: whitish, ~1mm, fragile, splits easily
VEIL: none
GILL: free or nearly so, whitish, 2mm deep, v crowded, turning pinkish brownish and soon liquifying
I’ve repeatedly failed to get a spore print from this thing. Most old (liquefied) specimens just collapse into a moldy pinkish puddle, but I have seen one potentially inky one. Comments in Demystified imply that only Coprinus and Bolbitius (and related satellite genera) liquefy like this. Since they don’t turn blackm generally, I’m guessing Bolbitius.

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29% (1)
Recognized by sight: Non-black autodigesting gills.

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