80 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY 



shown in either the immediate progeny of the wild find itself or in at 

 most three subsequent generations, and hence are not, as is usually 



Fig. 32. — Athyeium i-ilix-ixeaiixa, vae. ceistatum Kileushexse. 



the case, the result of long-continued accumulation of gradual improve- 

 ments. The pedigree slides show this in the clearest possible manner. 

 The last slide, representing my fernery at Forest Gate, demonstrates 



