Abstract
THE following peculiarities in the flowers of Helleborus niger bear upon the same subject as Mr. Hartog's observations on hazel catkins (NATURE, No. 23), and may be worth noticing.
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HAYDEN, C. Cross Fertilisation. Nature 2, 28 (1870). https://doi.org/10.1038/002028a0
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DOI: https://doi.org/10.1038/002028a0
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