ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 309 



remain for the present unproved. However, I name it tentatively, 

 and describe it so far as the material goes. 



Description. — A small, slender, diffuse, evergreen, creeping perennial. Roots 

 fibrous. Stem procumbent, rooting below, ascending at the tips, slender, ^ inch 

 thick throughout, much branched, bright red above, grey when old, very rough 

 with whitish, asperous, spreading, scale-Uke projections arranged in crowded rings 



Fig. 185. — ? 5. polyrhizum Praeger. 



throughout its length. Aerial roots very many, axillary, borne throughout the 

 stem save for about \ inch at the apex, 5 or less at each axil. | inch long, the 

 upper ones alive, bright red. tortuous, the lower ones mostly dead, forming 

 shaggy tufts at the swollen leaf-scars. Leaves alternate, crowded, patent or 

 deflexed, longer than the internodes, glabrous, dark green, sessile, oblong-obovate, 

 blunt, flattish on face, much rounded on back. \ inch long, -^ inch broad, tW inch 

 thick. 



INDEX. 



[Synonyms and erroneous names initalics. Genera in small capitals. 

 Principal references in heavy type, thus — 206.] 

 (In order to render this Index a more complete guide for garden purposes I have 

 included in it the collection of erroneous garden names which I published 

 in Gardeners' Chronicle, 3rd Ser., 66, p. 334, 1914. These are distinguished 

 by the reference G.C.) 



'AlTHALES Webb and Berth., 22. 293 

 rubevs Webb and Berth.. 304 



Anacampsbros Toumefort, 22, 81 

 Borderi, Jord. and Fourr., 85 



Clbmbntsia Rose, 22 



rhodantha Rose, 67 



Cotyledon Toumefort, 21 

 spinosa Linn., 168 



