Abstract
This is a monograph dealing with the plants and pollens causing hay fever in the state of Cordova in Argentina. The introductory chapter gives a short botanical review of pollen and the process and functions of pollination. The third chapter deals with distribution of vegetation in Cordova. The fourth and fifth chapters describe the forms and structure of pollen, the methods of collecting pollen, the counting of pollen and several anemopollinometers, of complicated design. Chapter 6 constitutes half of the volume of the monograph and contains the most important feature of the book. It is a complete study of plants and pollens in Rio Cuarto and southeast Cordova. Included are many fine photographs of plants in their natural habitat and as dried specimens. There are also a large number of photographs of pollens. A pollination calendar gives valuable data. The most important hay fever season comprises the months of February
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