138 TOWN PLANTING 



thrives in a commendable way and goes on 

 steadily increasing from year to year. Some 

 of the best varieties of the Iris for rockwork 

 are /. ochroleuca, I . sibirica, I . germanica, I . 

 gigantea and /. Pumila in variety. Of that 

 most useful of rock plants the Saxifrage, 

 few are really suited for growing in London, 

 by far the best being the well-known London 

 Pride (Saxifraga umbrosa), which, as an all- 

 round showy evergreen for smoky localities, 

 has few equals. 5. ccespitosa is another ex- 

 cellent species and thrives well in the very 

 heart of the great metropolis. 5. Andrewsii 

 and S. dentata have also done well for seven 

 years in a town garden. Curious as it may 

 appear the choice little Azalea procumbens, 

 from the highest granite mountains of Scot- 

 land, has become quite established in a 

 London garden, where the air must be vastly 

 different from that at the high altitude at 

 which it is found growing naturally. The 

 nearly allied Arctostaphylos Uva-ursi (the 

 Bearberry) has also done well, and in one in- 

 stance increased from a small plant till it 



