DESCRIPTIVE AND SELECTIVE. 209 



suitability for large rockeries. Their chief use is for 

 trailing over large stones, which they cover with a 

 charming mantle of brilliant flowers. The blue rock 

 Bindweed (mauritanicus), a North African plant, is 

 particularly beautiful, and the flower-lover who sees 

 it for the first time draping a large rock is enchanted 

 with its exquisite beauty. The Bindweeds will thrive 

 in ordinary garden soil. 



The following are a few of the species best suited to 

 the wants of the rock gardener : althaeoideSy a twiner 

 with pink flowers in late spring, hardy and quite easy 

 to grow, may be propagated by division or by seeds if 

 procurable ; Cneorum, with silvery foHage and charm- 

 ing pink flowers, a deUghtful plant, but not perfectly 

 hardy, it should, therefore, have a warm, sheltered 

 spot ; IncanuSj silvery leaves and white flowers, not 

 hardy ; Lineatus, almost a carpeter, with purplish-red 

 flowers and silky-grey leaves, not a very free bloomer ; 

 MauritanicuSj the most beautiful of all, a really 

 exquisite flower, rich blue in colour, and blooming 

 very abundantly. It is not absolutely hardy, but as 

 seed is plentiful and the plant is easily raised, it may 

 be treated as an annual. The seed could be sown on 

 a greenhouse shelf, or in a frame in March, and the 

 plants put out in a warm place early in summer. It 

 Hkes a sandy soil. Owing to its graceful, dependent, 

 yet not rampant, habit, it is often grown in baskets 

 and vases. 



COPT IS TRIPOLI AT A (Gold Thread).— This 

 Uttle plant is listed in some of the catalogues. It is 

 a tiny evergreen, producing large numbers of slender 



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