226 ALPINE FLOWERS AND ROCK GARDENS. 



by division between autumn and spring, but this plan 

 is not suitable for the upright sorts, which must be 

 increased by means of cuttings inserted in sandy peat 

 in a frame in autumn. The following are the most 

 suitable kinds for rockeries : carnea (herhacea) produces 

 its beautiful rosy purple flowers in February, and only 

 grows from six inches to a foot high. It is a European 

 plant. There is a white variety called alha. Cinerea, 

 the Scotch Heath, is somewhat taller than the preced- 

 ing one, yet not a strong grower. It bears reddish- 

 purple flowers in summer. There are many varieties 

 of it, such as alha^ white ; atropurpurea, dark purple ; 

 atrosanguineUy dark red ; and rosea, rose. Ciliaris is 

 a late summer bloomer, with purple flowers. Lusi- 

 tanica (codonodes), the Portuguese Heath, is too tall 

 for many rockeries, but it is a beautiful plant, bearing 

 pink flowers at mid- winter. Mediterranea is also too 

 large for some, but a fine plant, with purple flowers in 

 spring. There are several varieties of it. Tetralix 

 (Bell Heather) bears Hght red flowers in late summer, 

 and grows about a foot high. There is a white variety 

 {alba) J and a red (rubra). Vagans (Cornish Heath) 

 grows from a foot to three feet high and bears purplish 

 flowers in summer. There are several varieties of it. 

 The " St. Dabeoc's Heath,'' sometimes offered under 

 the name of Erica polifolia and also grown as Daboecia 

 polifolia and Menziesia polifolia is a beautiful plant, 

 with distinct purple flowers. There is a lovely white 

 variety. They are natives of Ireland and bloom late 

 in summer, when there are few small shrubs to equal 

 them in beauty. They hke a peaty soil. 



