The discreet bodies of definite shape, size, and number into which the pollen is aggregated in most orchids.
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After Bauer & Lindley
Pollinarium of Coelogyne fimbriata Lindl.
Surface of pollinium of Coelogyne fimbriata Lindl.
Cross-section through pollinium of Coelogyne macdonaldii F.Muell. & Kraenzl.