v^aeb^^-v, ^" 



'JOURNAL 



OF THE 



ROYAL HORTICULTURAL SOCIETY. 



Vol. XLVI. 1921. 



AN ACCOUNT OF THE GENUS SEDUM AS FOUND IK' 

 CULTIVATION. 



By R. Lloyd Praeger, B.A. 



CONTENTS. 



Part I. — Introductory. 



I. Preliminary 

 II. Historical 

 III. Distributional 

 IV. Statistical 

 V. Variation 



PAGS 



I 



3 



5 



II 



13 



VI. Cultivation and Propa- 

 gation 

 VII, Sources of material . 

 VIII. Notes on the text . 



Part II. — ^Descriptive. 



IX. Characters of the Genus 



X. Description of Species 

 Index .... 



PAGE 



16 



19 

 20 



PACK 



26 



309 



b 



PART I.— INTRODUCTORY. 

 I. Preliminary. 



It is doubtful if any genus of plants which is widely cultivated is in 

 such a confused state in our gardens and horticultural books as is the 

 genus Sedum. Even in collections where the owners pride themselves 

 on correctness of nomenclature, misnomers and nomina nuda abound ; 

 and common species masquerade under many different names. 



This does not arise from any special difficulty in the identification 

 of the species of Sedum. Some of the species, it is true, are variable 

 and in some of their forms not at once recognizable by the unmitiated ; 



B 

 VOL. XLVl. 



