PollyMapStemphylium mold spore photographed through the microscope in the PollyKit lab — verified in Arizona.
More verified photos of Stemphylium
About stemphylium mold spores
Dark, waisted mold spores from plant debris and diseased foliage.
Where it grows
- Diseased leaves of vegetables and alfalfa
- Plant litter and soil
- Damp indoor materials
How to recognize it
Brown spore, roughly oblong with a pronounced constriction at the central crosswall giving an hourglass waist, plus lengthwise walls and a roughened surface.
Typical published size: 20–40 µm
Commonly confused with
- Alternaria — beaked
- Ulocladium — no strong waist
Allergy relevance
A moderate mold allergen contributing to rhinitis and asthma in sensitized people.
Where it's found
PollyMap has verified specimens of Stemphylium from Arizona.
Worldwide and throughout the United States.
Also searched as: stemphylium spore, stemphylium under microscope.
Related mold specimens
Citing this specimen: PollyMap Specimen Library. “Stemphylium — verified microscope specimen.” pollymap.com/library/specimen/stemphylium-mold-spore-210fb3
Expert discussion
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