The existence of sexuality in the vegetable kingdom, though at first surmised simply upon a presumed analogy in this respect between animals and plants, and long a disputed point in science, has for some time been admitted as an indisputable fact. In the Phanerogamia especially, the necessity of the conjunction of the pollen tube and the ovule for the production of the embryo can no longer be denied by any one. Observations and experiments whose results admit of no dispute, have established this fact, although opinions may vary as to the essential nature of the act of impregnation.

Copyright © 1856 by the Company of Biologists Ltd.
1856
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