TtrccA. 333 



with long thin narrow leaves, which are from one to one 

 and a half feet in length, sometimes slightly twisted, dull 

 green, clothed at the edges with a pi'ofusion of long curled 

 white filaments. It is compact in habit, and formS an 

 exceedingly attractive object. Native of Mexico. 



Y. aloifolia. — The leaves of this species are leathery in 

 texture, from twelve to eighteen inches in length, and 

 about two in breadth, widest about the middle, tapering 

 to a point, and there armed with a sharp spine, spreading 

 horizontally, and of a dark green. It is an erect-growing 

 plant, and when grouped, with its variegated varieties, 

 afibrds a rich and beautifdl contrast. Native of the West 

 Indies and South America. 



Y. aloifolia variegaia, — A superb plant, in habit resem-i 

 bling the preceding. The leaves are from eighteen inches 

 to two feet in length, and about two inches in breadth, 

 tapering to a point and terminated with a sharp spine, 

 centre dark green, fading to grey, and bordered with 

 yellowish white. It is a very handsome and ornamental 

 variety. 



Y. canalieulaia. — This is a fine bold plant of erect 

 growth. The leaves are from twelve to twenty-four 

 inches in length, narrow, channelled, lanceolate in shape, 

 famished at the edges with a few distant white filaments, 

 and armed at the apex with a stout and sharp brown spine, 

 dark green on both sides. It forms a striking ornament 

 in the conservatory. Native of Mexico. 



Y. concava. — This is of robust habit, and very distinct. 

 The leaves are stout, spreading, concave, from two to 

 three feet in length, and about three inches in width, dark 

 green, bordered with a narrow band of brown, and ending 

 in a short stout brown spine. 



Y, conaava JongifoUa. — A distinct form of the preceding 



