reddish tips. Above it divides into branches which bear the 

 beautiful star-like flowers. The flowers, which appear in 

 July and August, are usually of a pale red colour with a 

 darker central stripe to each petal. A variety with cream- 

 coloured petals is very occasionally found. 



The Cobweb House-leek {Sempervivum arachnoideuni) 

 is not unlike the plant here photographed, but will be readily 

 distinguished from it by the long white hairs borne at the 

 tips of the rosette leaves, which become interwoven with 

 those of adjoining leaves to form a spider's-web-like 

 structure. Its flowers are a brighter crimson than those of 

 the Mountain House-leek. 



VI 



