222 ALPINE FLOWERS AND ROCK GARDENS. 



effected by sowing seed under glass in spring, or by 

 division in autumn or winter. 



The following are the principal species : Aizoides 

 is the most popular of all, it forms dense carpets studded 

 with yellow flowers in March ; a really charming little 

 plant. Aizoon is also very dwarf, and bears yellow 

 flowers early in spring ; it is not a fast-spreading plant 

 Hke the preceding. Alpinais an Arctic species, dwarf, 

 and with yellow flowers. Cinerea, a Siberian plant, 

 is one of the best of the white species. Cuspidata is 

 a Spanish Alpine, yellow flowered. Glacialis, a Swiss 

 Alpine, with yellow flowers, is pretty. Pyrenaica, 

 with white and purple flowers, is also good. 



DRACOCEPHALUM (Dragon^s Head).— Most of 

 these are rather too large for many rockeries, but several 

 are suitable, as, if rather tall, they are not of coarse, 

 spreading habit, and may be admitted. The flowers 

 are not only pretty but quite distinct. They are of 

 easy culture, succeeding in almost any soil. I find that 

 they do well in chalky soil. Propagation may be 

 effected by seed sown under glass in spring . A ustriacum, 

 grandiflorum and Ruyschianum all have blue flowers. 

 Grandiflorum is the dwarfest, but a place should be 

 found for Ruyschianum if possible, for it is a beautiful 

 plant. 



DROSERA (Sundew). — ^This is a small genus of 

 curious plants, having the power of catching and 

 absorbing flies and other small insects. They are, 

 therefore, insectivorous. There are several hardy 

 species, of which rotundifolia, a British plant, the well- 

 known "Sundew," is the most famihar. It is a pretty 



