The Cultivation of Flowers 
187 
Aubrietia and its varieties torm pretty trailing plants, 
which grow quickly over the stones, and are simply covered 
with blue, mauve, purple, violet, or carmine flowers. Height, 
6 in. 
Campanula and varieties, many of which are very 
Campanula 
pretty, growing from 4 in. high in the case of Campanula 
pulla , to 10 in. in the case of Campanula barbata. 
Cerastium tomentosum. — Pretty silvery leaves and 
large white flowers. 
Dianthus alpinus. — Pretty rock plant, producing large 
rosy crimson flowers on stalks 2 to 3 in. long. 
Galium rubrum. — Compact-growing little plant with 
large numbers of small yellowish-white flowers. 
