SYMMETRY OF THE CENTROSPERM E. 277 
curve. The subcurves of the branches (tertiary axes), numbered from below upwards, show 
an admirable series of transitions to the purely descending curves, and that the changes 
in the internode- and displacement-subcurves are not synchronous. The irregularity of 
the internode-curves of these branches and the perfect consistency of the analysis of 
these into regular subcurves supplies most convincing evidence not only of the utility 
of the graphic method in elucidating morphological problems, but also of the truth of 
the view here put forward in regard to the true nature of the phyllotaxis of Atriplex 
rosea and Chenopodiacee in general. A similar, but even better, series is exhibited by 
specimen 187, about to be described, but concerning quaternary axes. 
Atriplex rosea 187. (Curves 5 am, 5 1-1v, 5 bm.) 
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5bm. 5am. 
= 5m. 51v. 
