Knapweed flower, Fluorescence

Knapweed flower, Fluorescence

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Credit: KARL GAFF / SCIENCE PHOTO LIBRARY

Caption: Flourescent light micrograph of pollen grains fluorescing on floets from a common knapweed (Centaurea nigra) flower. Common Knapweed blooms from June to October.

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Keywords: angiosperm, asteraceae, biological, biology, black knapweed, botanical, botany, centaurea nigra, close up, common knapweed, compositae, flora, florets, flower, flowering plants, gamete, gametes, lesser knapweed, light micrograph, light microscopy, male, microscopy, nature, perennial, plant, pollen, reproduction, reproductive, sex cell, sex cells

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