274 



REPORT ON THE PRIMULA CONFERENCE. 



Primula is further divided as follows : — 



Tap root persistent — § 1., sinenses, $,g, t P. .sinensis. 

 Tap root transitory — 



Bark of root ultimately peeling off — § 2., cortusoides, 



e.g., P. cortusoides. 

 Bark of root persistent — § 3., officinales,*?^., P. officinalis. 

 Auricula is divided according to the number, form and 

 arrangement of the groups of fibro- vascular bundles ( = steles). 

 Stele solitary, undivided — § 4., reptantes, e.g., A. reptcins. 

 Steles numerous — 



Steles circular (or cylindric) — § 5., ursinaB. 

 Steles flattened (arranged in arcs) — § G., farinosae, e.g., 

 A.farinosa. 



Steles fused into a ring, from the outer side of which the 

 roots are given off — § 7., japonica?, e.g., A.japonica. 



