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Transactions. 



shorter form of leaf than usual. Three examples of mature sterile leaves 

 are given in figs. 91a to 91c, the first two coming from luxuriantly-growing 

 pendulous plants, and the third from the lower part of a short, erect, but 

 fully-grown shoot. The normal size is narrower and slightly longer than 

 that shown in 91c. Individual branches may be met with showing marked 



V 



7 



Figs. 88, 89. — -Young plantlets, showing first aerial shoot. X 3. 

 Fig. 90. — Young plantlet in which both main apices of rhizome 



have grown up into aerial shoots, x 3. 

 Fig. 91. — Three varieties of the mature sterile leaf taken from 



well-grown shoots. X 1"3. 



variation in size of the leaves up and down the branch, a zone of quite 

 stunted and almost scale-like leaves sometimes occurring in amongst those 

 of the ordinary form. The leaves are sometimes in two orthostichies only, 

 being then flattened in one plane, this being a common state in juvenile 



