90 THE NEW GARDENING 



the latter is a good plant. A point in favour of these 

 Alyssums is that they will thrive in poor limestone soil. 



ANDROSACE. The beautiful rock Jasmines will be 

 grown in every good Alpine garden. The species differ 

 considerably in habit. Sarmentosa, for example, is of 

 tufty growth and produces plantlets on red runners ; 

 while carnea has narrow leaves and lanuginosa is a 

 silvery-leafed trailer. Chumbyi is now acknowledged 

 to be a variety of sarmentosa. I find it to be a more 

 vigorous grower, forming large clusters of the charac- 

 teristic tufts ; in both cases the flowers are pink, borne 

 on short stems in spring. It will be well to protect them 

 from rain in winter with a covering of loose glass. Laggeri 

 is a mossy grower, and bears pink flowers on 2-inch stems. 

 Primuloides is a charming but rare plant with rosy flowers 

 on 4-inch stems in May. Villosa has downy leaves and 

 pale pink flowers in late spring ; Chamaejasme is a variety 

 of it. Sempervivoides is a purplish species from Thibet, 

 with foliage in rosettes and flowers in umbels ; like 

 sarmentosa, it produces runners. Charpentieri is a Swiss 

 gen, with hairy rosettes of foliage and carmine flowers. 

 The Androsaces like a good deal of peat and sand in the 

 compost, and may be top-dressed with gritty soil in 

 spring. 



ANTENNARIA TOMENTOSA is a useful carpeter, with 

 dense silvery foliage clinging close to the soil. It is a 

 slow grower, but it will thrive in a hot, dry place. 



ARABIS. The old species of Rock Cress, albida and 

 alpina, are among the commonest of rock plants, and it 

 is often a case rather of curbing than of encouraging 

 their growth. A defect of the plants is that after the 

 first flowering in spring, when they are comparatively 

 compact, they make a good deal of coarse growth, 



