SEM of anther of chickweed flower

SEM of anther of chickweed flower

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Caption: Scanning electron micrograph of the pollen-bearing anther of a flower of the chickweed, Stellaria media. The anther sits at the end of the stalk- like stamen. In chickweed, the pollen sacs effectively turn themselves inside out to produce the appearance of a mass of pollen grains shown here. If an insect happens to pass, grains may be brushed onto its body & effect a distant act of cross-pollination with another chickweed plant. If no insect appears, the anther stalk eventually bends inwards to contact the stigmas of its own flower & so effect self-pollination. Magnificat- ion: x45 at 35mm size, x300 at 8x10-inch size. Reference: MICROCOSMOS, figure 4.30, page 81.

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Keywords: anther, botany, chickweed, nature, plant, plants, pollen, reproduction, reproductive, self pollination, sem, stellaria media, type

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