VEGETATIVE ORGANS OF LYGINOPTERIS 329 



Each leaf was supplied by one of the primary xylem strands 

 which, as it passed outwards, became associated with phloem 



Fig. 188. — The foliage {formerly known as Sphenopteris hccninghausii) of 

 Lyginopteris oldhamia. (From a drawing, after Potonie, lent_^by 

 Prof. F. W. Oliver, F.R.S.) 



and, on entering the pericycle, divided into two. The double 

 bundle (Fig. 189, Bs.) traversed several internodes before bending 



