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Allergists have indeed been fortunate for many years in having the close cooperation of a botanist of Dr. Wodehouses' caliber and industry. In this book he has gathered the results of a large amount of study concerning the plants which cause hay fever. The first one hundred and sixty-three pages are devoted to a systematic discussion of the grasses, weeds and trees, with many excellent line sketches to aid in identifying the various species. The last third of the book is devoted to regional surveys. The United States is divided into ten regions, and a list of plants and their pollinating times is given for each region.
One is impressed by the great variability of flora in the different regions, and particularly by the large number of plants which may cause hay fever in the Southern and in the Southwestern States. Inasmuch as it is necessary for an allergist to
Hayfever Plants: Their Appearance, Distribution, Time of Flowering and Their Role in Hayfever, with Special Reference to North America (New Series of Plant Science, Vol. 15).. Am J Dis Child. 1946;71(2):200. doi:10.1001/archpedi.1946.02020250090012