VOL. IV 



MINNESOTA BOTANICAL STUDIES 



PART III 



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Fig. 1. A hackberry -pocket." The trees are Celfis ocndeutalis. The depression 

 in the center of the clump of trees is due to the presence of the nests 

 ot the great blue heron. 



Fig. 2. A buckbrush "pocket." The species here is Svmphoricarpos occidentalis 

 Note the clumps of Ccanothns on the upper slopes and tops of the hills. 



PLATE XXXVII 



