Excerpt from Lectures on the Evolution of Plants
In the present volume I have endeavored to present in as untechnical a manner as seemed feasible the more striking facts bearing upon the evolution of plant forms. While there are numerous excellent text-books in which most of the statements here given are clearly presented, there is none, at least in English, so far as I am aware, where a connected account of the development of the plant kingdom from an evolutionary standpoint has been attempted. Of course every modern system of classification is based upon the assumption of a genetic connection between the different groups, and must take into account the origin of plant forms; but these phylogenetic problems are necessarily subordinated in the general text-books. Moreover, these textbooks are, for the most part, avowedly prepared for the use of botanical students alone.
It seemed to the writer that an accurate, if somewhat general, and not strictly technical, statement of our present knowledge concerning the data from which the genealogical history of the vegetable kingdom may be traced, might be of interest not only to such botanists as have not concerned themselves specially with this phase of the science, but also to zoologists, and those general readers who are interested in biological problems.
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