THE GENUS CAMPANULA. 



115 



NITIDA. — A distinct little American species, with leaves in small 

 rosettes, and having their edges frilled. The flowers are in spikes and 

 like isophylla in shape. It is found in the blue and in white, and both 

 single and double. Height six inches. Division in the spring is the best 

 mode of propagation. 



MORE TTIANA . — A very diminutive subject (fig. 35) with erect 

 violet blossoms, one on each stalk. It is a difficult plant, but will thrive 

 fairly well with the same treatment as advised for Elatines. 



MUBALIS (syn. Portenschlagiana). — This is rightly named the 

 ' Wall ' Campanula, for no plant will pierce the mortar of an old 

 moist wall better than this. In ordinary garden soil it forms cushions 



