xii LIST OF PLATES 
RAMONDIA NATALIAE , : { to face page 254 
PRIMULA INVoLUCRATA, PRIMULA  CORTUSOEIDES, 
PRIMULA DEORUM. : : ; -, 270 
The plates, except where otherwise stated, are from photographs 
by Mr. Horner, of Settle, Yorkshire, and all were taken in the 
Author’s own gardens. 
