Explanation of Figures. 



Plate XVIII. 



Fig. 1. Fruiting panicle of Saccharum spontaneum var. nepalense x f . 

 •„ 2. Leaf of same x f. 

 ,, 3. Pedicelled spikelet of same x 2 J. 

 „ 4. Sessile spikelet of same with pedicel, from which the pedicelled spikelet has 



fallen off, and joint of axis x 2\. 

 „ 5. Basal portion of culm of same with axillary shoot. Note that culm is 



fistular x f . 

 ,, 6. Upper portion of culm of same. Note that culm is solid x f . 

 Figs. 7 and 8. Culm of sand-form of Saccharum spontaneum showing the effect 

 of cutting oil the leaves on the length of the internodes. The culm was cut 

 over at X and thus deprived of all its green leaves which were visible on the 

 date of cutting. When the culm was drawn however the continued growth of 

 the apical bud of the culm and of the leaf rudiments which had been uninjured 

 by the cutting had produced a new terminal tuft of green leaves. This cutting 

 resulted in the removal of the entire lamina and more or less of the sheath 

 of 3 leaves numbered 1, 2 and 3. In figure 8 the sheaths of these leaves have 

 been removed to show their insertions on the culm which are also numbered 

 1, 2 and 3. Internode (a) had practically completed its growth on the date of 

 cutting and is of normal length. It will be seen however that internode (b) 

 has not increased in length since the date of cutting, as is indicated by the 

 cut apices of the leaf sheaths 1, 2 and 3 having remained at the same level X. 

 Compare tiie length of the abnormally short internode (b) with that of the 

 normal internode (a). C is a leaf of which only the apical portion of the 

 lamina was destroyed by the cutting. 



