SE'DUM AIZOO'N. 
YELLOW STONE-CROP. 
Class. Order. 
DECANDRIA. PENTAGYNIA. 
Natural Order. 
CRASSULACE.®. 
Native of 
Height. 
Flowers in 
Duration. 
Introduced 
Siberia. 
1 foot. 
July, Sept. 
Perennial. 
in 1757. 
No. 348. 
Seclum is deduced from the Latin sedere, to sit, 
from the closeness with which most of these plants 
are attached to rocks and dry places. The term 
savours of an old author’s whim, who saw that his 
sedum had no leg to stand upon. Aizoon, from the 
Greek aei, always, and zooN, alive; a name for- 
merly applied to this and some others of the same 
genus, from their existing in defiance of aridity. 
A collection of succulent plants assumes a far more 
interesting group than would at first be conceived, 
from the possession of a few species only. Their 
peculiarity of conformation, and their almost obsti- 
nate attachment to life, render them objects of 
pleasing curiosity. 
It would appear as though many species of Sem- 
pervivum, Sedum, Cotyledon, Cactus, and others of 
the Crassulaceae, grew independently of the grosser 
elements, earth and water. It is true, that some of 
them will exist for months, in the absence of both. 
Natives, as many of the Cacteae are, of the rocks of 
South America, they meet a scanty supply of either ; 
and indeed, our own Sempervivum tectorum, or 
common houseleek, attached to a cottage tiling. 
