158 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



as well as by its much slenderer wiry stems, &c. S. Bourgaei differs 



Fig. 84. — S. griseum Praeger. 



in its longer, more erect, red (not greyish) branches, green (not 

 glaucous) linear (not linear-fusiform) leaves, which are fiat above 

 (not sub-terete). 



