1869.] HARDY HERBACEOUS PLANTS. 131 



of the foregoing species. It is a bright free-flowering plant, which 

 about, July and August forms beautiful masses of blue. Native of 

 the mountains of Naples and Sicily, and hardy as the rock it clings to, 

 if protected against stagnation of moisture. Erroneously included 

 among the half-hardy species in some lists. A variety named Hirsuta 

 is peculiar in aspect, but not so free flowering as this species. 



C. isopliylla, syn. C. florihunda, has much of the appearance of C. 

 fragilis, but has broader leaves, is more dense and tufted in growth, and 

 a more profuse bloomer. The flowers, which appear in June and July, 

 are pale blue with a grey centre. Native of Liguria ; perfectly hardy, 

 but impatient of wet. 



C. rotundifolia — " Scotch Blue Bells " — though not very " far 

 fetched," so wonderfully increases in beauty under care and culture, 

 that I cannot pass it over in this list, but strongly recommend it to all 

 who may not have given it a trial. It is one of the most graceful, pro- 

 fuse, and lasting of Campanulas, and adapts itself readily to any posi- 

 tion. A white and also a pink variety occasionally to be met with are 

 interesting and pretty. 



C. pusilla is a diminutive species in the way of C. rotundifolia. The 

 flowers are pale blue, appearing in June and July in small loose nod- 

 ding racemes. It is from the Swiss Alps, and chiefly valuable because 

 of its great pertinacity of life in dry stony positions. 



C. Cenisia is a very diminutive species, rising to the height of only 

 3 or 4 inches, forming a close carpet of lilac-blue flowers, large in pro- 

 portion to the plant. One of the prettiest and most interesting in the 

 family, found at a great elevation on the Alps of Italy. Most suitable 

 for rockwork. Flowers in July and August. 



G. 2^umila, in the form of the white variety, one of the best known 

 of the smaller Campanulas. Like the last-named sort, it forms a close 

 carpet of flowers, which appear in June and last till August. The blue 

 form is not so common, but both should be in every collection of hardy 

 herbaceous plants, as it is one of the most graceful and profuse-flower- 

 ing, and a most accommodating plant, thriving alike well in nearly 

 every variety of soil and position. Native of hilly pastures in Switzerland . 



C. Zoysii is a tufted species, with erect flower-stems from 6 to 9 

 inches high, bearing long campanulate dark-blue flowers about July 

 and August. Found on mountains and rocks in the Tyrol, and is best 

 suited for planting on rockwork, but succeeds well also in light rich 

 soil in well-drained borders. 



G. pulla. The blue forms of C pusilla and C. pumila are some- 

 times sent out for this species. It is rather rare in the country, but is 

 a very desirable and distinct plant. It is dwarf, rarely exceeding 8 

 inches high, with erect simple flower-stems, bearing each a solitary 



