184 ROCK GARDENING FOR AMATEURS 



S. obtusatum. A charming plant from California. 

 The evergreen leaves are bright green in spring, while 

 the stems are crimson-red. In the autumn the leaves 

 also assume the same tint, which persists during the 

 winter. It must have a sunny position on a rock ledge. 

 The flowers are yellow, and appear in June. 



5. oppositifolium. A strong-growing trailing plant, 

 native of the Caucasus, soon covering a large space, with 

 evergreen leaves and whitish flowers in August. 



S. pulchellum. One of the prettiest of the whole 

 family, from the United States, with trailing stems and 

 bright rosy purple flowers in large spreading heads. It 

 must have a sheltered, well-drained position. 



5. rupestre. A native plant that is very useful for 

 covering bare, stony banks. It makes a carpet of trailing 

 tresses, with narrow leaves in rosettes at the top of the 

 stems, and yellow flowers in the summer. 



5. spathulifolium. One of the most distinct Stone- 

 crops, from North-western America. It has fleshy, 

 glaucous leaves on pinkish stems, and bears citron-yellow 

 flowers in May. Likes a warm, dry place. 



S. spectabile. This is a well-known kind from Japan, 

 flowering in autumn, with large heads of densely packed 

 rosy pink blooms. The stems are clothed with broad 

 glaucous foliage. It is better suited to the flower border. 



S. spurium. This is one of the most useful plants 

 for covering moist or half-shady walls. It has evergreen 

 foliage on long, trailing stems, and pink or rose-coloured 

 flowers in large heads. It is a native of the Caucasus. 



