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parative lengths of the internodes are not so uniform as in the 

 case of the pines, there being some instances in which the longer 

 internode falls in the year 191 1, instead of the shorter. The 

 reason for these exceptions is not clear; they may possibly be 

 due to local variations in the soil moisture. The totals and the 

 averages, however, show the same relations to one another as 

 in the case of the pines. The figures are given in Table IV. 



It is evident of course that the influence of the preceding season 

 is not limited to the retardation of height growth during the year 

 immediately following, but that the shorter twigs must involve 

 the production of a lesser leaf area than usual, which must in 

 turn be reflected in the amount of reserve products accumulated. 

 Here, however, the problem becomes complicated, and the 

 lessened leaf area on the last shoot may in a measure be compen- 

 sated by the greater illumination of the older leaves, by this fact 

 made possible. The figures for 19 12 as compared with those for 

 19 1 3 in Table I would seem to indicate the holding over effect 

 as here suggested, though the same does not appear to be true 

 of the Douglas fir. It is also evident that trees of different 

 species on the same areas are not equally responsive to the 

 variations of soil moisture in the manner indicated, a fact which 

 probably is due chiefly to a difference in the degree of tolerance 

 though to some extent to other specific peculiarities. 

 University of Montana 



A NEW SOUTHWESTERN SEDGE 



By Kenneth K. Mackenzie 



Since writing the article on Carex for the Illustrated Flora two 

 species have been found by Mr. E. J. Palmer in southwestern 

 Missouri not included therein. One is Carex arkansana Bailey, 

 heretofore known from Arkansas and Oklahoma. The other is 

 an undescribed species bearing a remarkable outward resemblance 

 to the European Carex vulpina L., and in technical characters 

 intermediate between that species and our own Carex stipata 

 Muhl. It is represented in the collections at the New York 

 Botanical Garden by several specimens, and seems first to have 



