Primrose flower

Primrose flower

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Caption: Primrose stamens. Macrophotograph of a flower of the primrose Primula pulverulenta, showing the "thrum-eyed" sex organ arrangement. This plant exhibits heterostyly, which means male and female flowers of the same species show a different arrangement of the sex organs. In this case, the anthers (grey) carrying the male pollen (white) are projecting from the vase-like neck of the flower, with the female style (not seen) hidden deep in the flower. This formation inhibits self- pollination (and thus promotes cross- pollination), as it makes it difficult for the flower's own pollen to reach the style. Magnification: x6.35 at 5x7cm size. x3.3 at 35mm size.

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Keywords: anther, botany, flower, flowering part, heterostyly, macrophotograph, nature, parts, plant, plants, pollen grains, prevention, primrose, primula pulverulenta, reproduction, reproductive, self-pollination, stamens, thrum-eyed

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