C. A. BARBER 



155 



Serrature harsher and more 

 porsisteiit in the Sunnabile 

 group. 



Lengtli of himina in different 

 part.s of the cane. Tliis is 

 best studied in tlie curves on 

 Chart IV. 



Average length of mature 

 lamina is greater in the 

 Saretha series. 



Extreme width of leaf. Tliis 

 is considerably greater in the 

 Sunnabile group. 



Leaf module is considerably 

 higher in the Saretha 

 series. 



Pinching in above the base is 

 marked only in the Saretha 

 series. 



Position of widest part 

 lamina, as percentage 



length up the leaf : it is lower 

 in the Sunnabile group. 



Gj'adionts of increase and 

 decrease in width, up to and 

 beyond the widest part. 

 The gradients are steeper in 

 the Sunnabile group. 



VII. Lamin.a. — conrld. 

 Soft, fine, soon deciduous 



Thick, harsh and persistent. 



The curves agree with those of joint and sheath, in that those 

 of the Saretha series are liighor and shorter, and steeper at the 

 ends, than in the Sunnabile grouj). The lamina curves differ 

 from the other two in themselves, in that, once the region of 

 full grown leaves is reached, the curves remain more or less 

 flat for a considerable time. 



191G, 3'9"-j 

 1917, 3'8" j 



1916, lo" 



1917, Katha "| 

 section, 1 "2" | average 



Mesangan ( 1 3" 



section, 1"5" j 



1916, 



1917, Katha 



section, 38 

 Mesangan 

 section, 33 



35 



average 

 37 



1916, 



'average 



78 



Width at baac 

 Width 1" higher up 

 1917, Katha ^^ 



section, ^ 



Mesangan 



no 

 section, ni 



1916, 0-47 of length of lamina 



1917, Katha "j 

 section, 46 |_ average 

 Mesangan I 0'48 

 section 



sangan | 

 tion, 0-50 j 



Increase, 1917, 

 Katha ^ 



section, 1 in 100 I average 

 Mesangan j 1 in 102 



section, 1 in 109; 



Decrease, 1917. 

 Katha 1 



section, 1 in 48 ( average 

 Mesangan / 1 in 44 



section, 1 in 40 / 



1916, l-S" \ 



1917, 1-7" / 



1916, 25 \ 



1917, 26 I 



1916, 



103 

 111 



1917, 101' 



1916, 0-40 



1917, 0-41 



Increase, 1917, 1 in 55 



Uecreasc, 1917, 1 in 33 



The midrib is more prominent in the Saretha series. It is not only wider in proportion 

 to the rest of the lamina, but it is also intrinsically wider, although the leaves are narrower. 

 For details refer to the table in the Detailed List of Characters. 



