AGATE. 87 



mounted with a very long one, dark brown in colour. In 

 general appearance tkis plant resembles a Fourcroya ; it is 

 very distinct and desirable. Native of North America. 



A. Warrelliana, — An elegant plant, with close set leaves, 

 which are from six to eight inches in length, tapering to 

 a point, and there armed with a stout brown spine an inch 

 and a half in length, the edges being closely set with small 

 ones of the same colour ; the colour of the leaves is light 

 glaucous green. It is a very handsome, and at the same 

 time a rare species. From Mexico. 



A. Xalapensis. — This very beautiful plant produces leaves 

 from one to two feet in length, and about three inches in 

 breadth, slightly spathulate, moderately thick, and rich dark 

 green in colour, armed at the apex with a stout brown spine, 

 and at the edges with smaller ones of the same colour, very 

 closely set together. Native of Mexico. 



A. xylacantha. — This very distinct and handsome species 

 is quite stemless. The leaves are spreading, and when well 

 grown about three feet long, and some three or four inches 

 broad, thick and fleshy, ensiforme-lanceolate in shape, and 

 glaucous green in colour, with abroad white margin, armed 

 with distant large flattened spines, which are frequently 

 forked. The scape is about ten feet high, producing the 

 flowers in clusters, bo as to form a dense raceme of bloom ; 

 a highly decorative plant. Native of Mexico. 



A. Yucccefolia. — ^A very distinct and interesting plant, 

 which, however, requires a little more than greenhouse 

 heat during the winter months. The stem is very short ; 

 leaves one to two feet long, and about two inches wide, 

 strap-shaped, and tapering to a point, somewhat leathery, 

 and very glaucous, channelled on the upper side, rounded 

 below, the margins fiirnished with very fine teeth. Native 

 of Mexico. 



