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  • 1980-1984  (1)
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    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 305 (1983), S. 706-707 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I studied Asclepias exaltata, a herbaceous, perennial milkweed, in southeastern Michigan. Each hermaphroditic flower has five pollinaria, each of which consists of two pollinia composed of about 180 fused pollen grains. The intricate pollination mechanism is like that of other milkweeds12. A ...
    Type of Medium: Electronic Resource
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