Publisher's Synopsis
Excerpt from How Ferns Grow
Innumerable books have been written about ferns in their mature stages of development, and many accounts exist of their earliest stages, which end with the formation of the young fern plant, but very little respecting the intervening stages seems to have been recorded. Although in these stages the fern-plant's development takes place, including the leaf-development, the literature of the subject consists of a few scattered papers only. These papers, moreover, deal mostly with individual species, and chie?y with the subject of cell-growth and kindred phenomena. They scarcely touch upon the development of the form and ve nation of the leaf in each species, and in its individual aspect only, without reference to its relation to such development in other fern species.
For these reasons, and in view of the important part that the form and venation of the species' leaf play nowadays in the classification of fern species, and of the fact that both often differ widely in the early stages of the' leaf from their characters in the later, it is thought that to point out in this book the principal features of the development of form and venation in fern leaves, as seen in the species of the northeastern United States, will be useful, and may serve to throw light upon such development in fern species in general.
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