ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 17 



instances. The following notes are arranged in descending order of 

 hardiness. 



R S. moranense — Hardy throughout greater part of British Isles. 



Less hardy than the last. Injured, but not 

 killed in the open in DubHn in bad winters. 

 5. Paltneri has been grown in the open 

 for many years at Great Warley, Essex. 

 At Wisley, in the severe winter of 1916-17, 

 S. retusum, S. Palmeri, and 5. compressum 

 withstood in the open a temperature of 

 —2° _F. (34° of frost) on grass twice, and 

 —4* F. once. 



R 5. 

 S. 

 R S. 

 R S. 

 R S. 



conjusutn 



retusum 



compressum 



Palmeri 



praealtum 



R 



R 

 R 

 R 



R 



Bourgaei 



cupressoides 



diversifolium 



griseum 



mexicanum 



oaxacanum 



alamosanum 



amecamecanum 



compactum 



frutescens 



nielliiulum 



rhodocarpum 



allantoides 



humifusum 



Liehtruinnianum 



longipes 



nutans 



pachyphyllum 



potosinum 



Treleasei 



versadense 



Barely survive a mild winter at Dublin 

 in the open. 



\ 



Uninjured in a cold frame in Dubhn, where 

 frost sometimes penetrated shghtly: 



Very sensitive to frost. A cold frame 

 was often not sufficient protection in 

 Dubhn, even when covered when frost 

 was expected. 



The species marked R have succeeded well in the open in the 

 garden of Sir John Ross-of-Bladensburg, at Rostrevor, Co. Down, 

 an exceptionally mild spot. 



Hardiness in these cases cannot, so far as the slight evidence 

 goes, be gauged by the altitude of the Mexican habitats. Thus, 

 the quite tender Liebmannianum. nutans, and pachyphyllum grow in 

 their native haunts ab6ut as high on the mountains (6,000-7,500 feet) 

 as the hardy moranense and retusum {6,000-8,000 feet). 



Of the tender Chinese species, the majority belong to the Japonica 

 series, and they vary from hardy in most parts of the British Isles, 

 e.g. S. sarmentosum, to distinctly tender, e.g. 5. lineare. The rest 

 include the pecuhar S. Chaneti and some annual plants. 



The other Sedums found in cultivation which are not hardy 

 come from various parts of the world : S. nudum from Madeira, 



''OL. XLVl. c 



