6 HiCKLING, Anatoi>i}> of Calauiostachys Binneyana. 



trace itself still remains. One of the actual photographs 

 out of the series of 22 which were taken is reproduced in 

 Photo. 4 of the Plate, to illustrate the possibilities of this 

 method of obtaining serial sections. The sections are 

 about 0"2 mm. apart. 



Fig. 2. 



Three successive oblique tangenlial sections of a bundle with its caiinal 

 canal and the lateral canals presumed to represent the degenerated 

 sporangiophore-traces. On the right of the bundle the trace 

 appears to have more or less completely persisted. The lowest 

 section is a, the highest (•. The sections are about 0"2 mm. apart. 

 X 71; dia. 

 px. f. =carinal canal. 



sp. c. = canal representing sporangiophore-trace. 

 phi. = position of phloem. 



The various considerations stated above lead me to 

 believe that the sporangiophore-trace really has its origin 

 at the true or " bract-" node, merely rising in contact with 

 the stelar bundle through the internode above until it 

 bends outwards to the sporangiophore. 



Closely connected with the relations of these traces is 

 the question of the number of bundles in the stele. As 

 already mentioned, it is now commonly accepted that there 

 are usually four or six, the bundles in the latter case being 



