Bui. 1 5, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



Plate VII. 



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Fig. 1.— Showing the Habitat and a fair Crop of Prairie Bulrush on Manns 

 Lake Ranch, 20 Miles Northeast of Andrews, Oregon. 



fci. - 



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Fig. 2.— Tetradymia and Psoralea holding drifting Sands, 20 Miles North of 

 Winnemucca, Nevada. 



