A Flora of Southern Illinois

A Flora of Southern Illinois

A Flora of Southern Illinois

A Flora of Southern Illinois

Excerpt

A Flora of Southern Illinois has been prepared for use by anyone having an interest in our native flora and who has had some introductory study of botany. The book will be of particular use to workers in the applied fields of biology, such as conservation, wildlife, forestry, and agriculture.

This book is still another effort to avoid or overcome the monotony of anonymous scenery. It will help the uninformed to the pleasure of recognition and to develop an appreciation for nature's forms and their botanical, geographical, and historical relationships.

Southern Illinois as treated in this work encompasses the southern twelve counties. The southern boundary of the area is the confluence of the Ohio and Mississippi rivers. These rivers also mark the eastern and western borders respectively. The northern boundary is a line running from northwestern Randolph County eastward along the 38th parallel.

The Southern Illinois area comprises 4,355 square miles which is about equal to that of the state of Connecticut (4,965 square miles). This twelve-county area has three neighboring states at its borders and is within one hundred miles of five states. This location is most favorable to floristic richness since some of these states are southern and the area is between or at the convergence of several important migration routes.

Climate and other conditions work together in setting the limits of where certain plants shall grow. Some plants grow only in groups of their own kind while other plants of many different kinds grow to-

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