SYMMETRY OF THE CENTROSPERM X. 291 
This annual opposite-leaved plant was uprooted, and measurements were commenced at 
the lowest distinct pair of leaf-scars (of the cotyledons ?). These leaves and the branches 
they subtend are termed I and I', similarly the branches emitted from the second node 
are termed II and II’, and so forth. 
As the leaves at all the nodes were opposite, the zero-measurements representing the 
longitudinal distance from one leaf to the other at a node have been omitted from the 
Table on p. 290. The internode-curves, so far as the limited number of internodes 
present allow one to see, are regular. 
FROELICHIA GRACILIS. (Curves 18 m, 18 r-v1.) 
This opposite-leaved annual herb was uprooted, and measurements began at the lowest 
visible leaf-scars, which subtended Branches I and I’. The remaining branches are 
jme eee d 
ties 18% 10K, 18m0. Mie 18r. 18 v1. 
numbered according to the nodes (as in the case of Gomphrena). (In the subjoined 
Table the x denotes the commencement of the terminal inflorescence, as all the leaves 
above this point subtended only inflorescences.) : 
SECOND SERIES.—BOTANY, VOL. VII. 
