Black Pin Mold
Rhizopus/Mucor spp.
Starts white, becomes grey, then develops characteristic black-headed pins on tall aerial stalks (sporangia). Very fast growing. Common grain and straw contaminant.

Visual Identification
White initially, becoming grey, then developing distinctive black-headed pins on tall aerial stalks (sporangia) — looks like tiny black lollipops on sticks.
Not Treatable
Discard affected material immediately.
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