Excerpt from Our Country's Flowers and How to Know Them<br/><br/>To explain this a little more fully, we may take, for example, the family Ranunculaceae, the first in classification and with which the beginner will probably be first acquainted. A Buttercup has a ?ower with the petals widely spreading; so that it has been observed to be visited by more than sixty species of insects. Hence the pistils of the ?owers on any plant can be easily fertilized by the pollen derived from those of another plant. It is thus adapted to insects and can be crossed. It may consequently be called an insect-fertilized ?ower. As, however, the stigmas are mature simultaneously with the anthers of at least some of its stamens, it can easily be self fertilized in the absence of insect visitors.
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