60 THE EHODODENDRON. 



hardy, biit the flowers expand so early as to be 

 often injured by the frost ; therefore, with us it would 

 require house protection. The flowers are rosy- 

 lavender, with dark spots ; the foliage deep green, 

 rusty underneath. Figured in Bot. Mag. 66, t. 3759 ; 

 and in Sweet's, Fl. G. 11. t. 241. 



The variety R. c. superbum (Pax. Mag. 16, p. 190) 

 has waxy white flowers, spotted with crimson-purple. 



Rhododbndkon caugasictim. 



This is a small species, in its native country 

 forming a low shrub, with procumbent branches ; a 

 native of the Caucasus, on high rocks, near the 

 limits of perpetual snow. 



The flowers are white, tinged with purple or rose. 



It is a desirable species, and should prove hardy 

 with slight protection. Figured in Bot. Mag. 28, 

 t. 1145. 



Variety stramineum has straw-colored flowers, and 

 is a very handsome plant. Figured in Bot. Mag. 

 62, t. 3422. 



Variety album is a hybrid with the white variety 

 of Azalea pontica, and resembles an Azalea more 

 than a Ehododendron. Figured in Bot. Mag. 67 

 t. 3811. 



Variety pulcherrimum is a hybrid between arbo- 

 reum and caucasicum. The flowers are rosy, and 

 very showy. 



