86 



JOWITT : NOTE ON 



Of the bundles below the arm of the pedicelled spikelet the 

 one nearest the sessile spikelet sends a free Isundle to johi the 

 one from the central of the sessile group of three. 



The other bundle below the arm of the pedicelled spikelet 

 runs in the substance of the wall of the utricle, and at its apex, 

 at the junction of the arms of the pedicelled spikelet and 

 solitary glume, is forked, sending branches into both arms. 



The bundle below the solitary glume runs for about half its 

 course in the substance of the utricle, then becomes free, and 

 joins the free bundles from below glume 1 of the sessile and 

 pedicelled spikelets. 



DiAGKAMMATIC. 



Gl. ii. , iii., iv. , Sessile. 

 Gl. i., Sessile. 



Arm of solitary glume. 

 Arm of pedicelled spikelet. 



iii 



Explanation of Diagram. 



A. Central bundle. 



B. and C. Side bundles, below glume 1 of sessile spikelet. 



D. Free bundle from below arm of solitary glume. 



E. Free bundle below pedicelled spikelet. 



F. Bundle in substance of wall below pedicelled spikelet, forked 

 at its apex. 



This arrangement of the bundles seems to explain the full 

 development of the sessile spikelet which receives five bundles, 

 two in the substance of the wall of the utricle and three free 

 ones ; the comparatively less development of the upper spike- 

 let which receives one bundle ; and the stunted growth of the 

 solitary glume which is dependent on a branch from the bundle 

 running to the jjedicelled spikelet for its nourishment. 



