COMMONPLACE NOTES. 



501 



object of beauty, and the same applies to all the coloured-stemmed 

 willows, or the weeping willows, if planted in suitable positions. The last 

 point is one of much importance. All trees should be planted in such 

 positions as are naturally suited for them, otherwise they appear out of 

 character, and instead of improving the effect they are more likely to spoil 

 existing natural beauty. 



Sempervivum holochrysum. 



W. L. Fox, Esq., F.R.H.S., of Carmino, Falmouth, sends us a photo- 

 graph of this interesting succulent plant, a native of Teneriffe, which 



Fig. 108.— Sempervivum holochrysum. 



flowered in his greenhouse in the summer of 1908. The huge in- 

 florescence was in flower from bottom to top for a considerable time. 

 The figure (fig. 108) shows it when in fruit, and a prodigious number of 

 seeds must be produced by the enormous head of flowers. The offsets 

 from the base of the plant are still in flower. The plant was introduced 

 as long ago as 1816, and is figured in the " Botanical Register" (tab. 174). 



Tree Carnations as Border Plants. 



Few plants have so rapidly become popular as the tree carnations, and 

 because of their free -flowering habit, perfect calyx, and sweet perfume 



