an example of a plant there all five types pollengrains are present
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In some pollen grains, e.g. birch and alder, the two layers of the exine are separated around the pores and form a chamber between the inner and outer exine (vestibulum). Finally there are the so-called bisaccate (pollen grains with "air-bags", e.g. the conifers spruce, pine, Pinus cembra and fir.
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Birch and alder
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