80 SWISS FLOWERS. 



drons, though it is smaller than most of them, forming a 

 low shrub. R. ferrugineum has one petal, spreading, deeply 

 divided into five lobes, of a rose colour, with a bluish tinge 

 in it ; the divisions of the calyx, which are covered with little 

 glands of a yellow colour, are less marked. The ten stamens 

 are yellowish, the anthers perforated with two pores. The 

 flowers grow in terminal racemes at the end of the branches. 

 The leaves are alternate, oblong, rather pointed towards the 

 two ends, green, and smooth on the upper side, but when 

 young with a bright yellow down beneath. This yellow 

 changes into bright rusty-brown as the plant gets older ; 

 hence its second name. R. hirsutum much resembles the 

 above, but is distinguished by the hairs on its branches, and 

 the backs of the leaves are not yellow or brown. The flowers 

 are smaller and lighter in colour. On Alpine granite-rocks 

 frequent; on the Wengen-Alp abundant; less common on 

 the Jura; sometimes found with white flowers. 



62. Azalea. 



(PLATE XXIX.) 



"We so much associate the Rhododendron and the Azalea 

 together among our spring flowers, that it seems natural 

 to do the same in Switzerland. A. procumbens (Fig. 62) is 



