267 

 R. ursinus, Cham. & Schlecht. North America. 



E. villicaulis, Weihe & Nees Die Deutsch. Brombeerstr. 

 t. 17. Europe. 



Var. elegans. 



Var. Selmeri, Rogers. Europe. 

 R. affinis, Blox. 

 R. Selmeri, Lindeb. 



R. villosus, Ait. ; Britt. & Br. Illustr. Fl. ii. 202, f. North 

 America. " High Blackberry." 



Var. flore pleno. 

 R. xanthocarpus, Bur. & Franch. North China. 



Purshia tridentata, DC. ; Bot. Reg. t. 1446. North-west 

 America. 



*Chamaebatia foliolosa, Benth. ; Bot. Mag. t. 5171. Cali- 

 fornia. 



Cercocarpus ledifolius, Nutt. ; Hook. Ic. Plant, t. 32 i 

 Western North America. " Mountain Mahogany." 



Var. angustifolius. 

 *C. parvifolius, Nutt. California. 



Cowania mexicana x Purshia tridentata. 



Dryas octopetala, L. ; Eng. Bot. ed. 3, t. 460. Arctic and 

 alpine regions of North Temperate Zone. " Mountain 

 Avens." 



Var. Drummondi, S. Watson. North America. 

 D. Drummondi, Hook. ; Bot. Mag. t. 2972. 



