C. A. BARBER 195 



(4) Serrature. Here also the greater hairiness or harshness of the leaves 

 is noticeable in the Sunnabile group. .With the exception of Piitli Khajee, the 

 serrature of the leaves is strong, harsh and persistent. In the Saretha series 

 (as in Saccharum sfontaneurn), it is usually soft, fine and more or less deciduous. 

 In the Sunnabile series the leaves, thus, have spines on the back of the sheath, 

 rough callus, strong scabrous feel at the leaf tip and harsh persistent serrature, 

 while the hgular setae are strong and frequently long : in the Sarttha series 

 the leaves are glabrous or almost so in all these respects, and one would feel 

 tempted to suspect a correlabion between the development of strong hairs in 

 all parts of the leaf. But the anomalous position of Putli Khajee suggest 

 caution. It has spines on the back of its leaf sheath while its serrature agrees 

 with that of the Saretha varieties. So also, in one of the two specimens of 

 Khadya received from Bombay the leaf sheath is glabrous, and in the other 

 it is spiny, and the glabrous-sheathed form agrees in other respects with the 

 rest of the Sunnabile grouj). 



(5) Number of laminas. As in the sheaths there are many more laminas 

 in the Sunnabile group in 1916, but about the same in the two groups in 1917. 

 The numbers in 1916 are, in Saretha 36, and in Sunnabile 45, whereas in 1917 

 the respective numbers are 29 and 30. 



(6) Length of lamina in different 'parts of the cane. Here, as in the sheath, 

 we have been led to consider the 1916 measurements as more in keeping with 

 the known characters of the groups. The following are the figures obtained 

 from the same canes which were measured for length of joint and length of 

 leaf sheath : — - 



Average length of successive laminas, 1916, in inches : 



Saretha group. 37, 39, 42, 45, 48, 51, 52, 53, 54, 55, 56, 55, 56, 56, 56, 



57, 57, 57, 57, 56, 57, 57, 57, 57, 56, 55, 55, 54, 54, 

 53, 51, 48, 45, 37, 26, 17, 8. 



Sunnabile group. 30, 33, 36, 38, 40, 42, 43, 44, 45, 46, 46, 46, 47 47, 47, 



47, 47, 47, 47, 47, 47, 48, 48, 48, 48, 48, 48, 48, 47, 



48, 47, 47, 47, 46, 45, 45, 44, 43, 42, 40, 38, 35, 24, 

 20, 15, 8. 



(7) Curves. These figures have been plotted out in curves as usual (Chart 

 IV). The curve in the Saretha group, in 1916, is higher, shoiter, steeper at the 

 ends than that in the Sunnabile group, agreeing in these respects with the curves 

 of length joints and leaf sheath. The curve starts higher in the Saretha group 



