18 CACTUS CULTURE TOR AMATEURS. 



A. pr is mat! cum. 



In this species the stem is top -shaped, brown and wrinkled below, 

 crowned with about twenty swollen, triangular, smooth grey-green 

 tubercles, 1 inch wide at the base, the apex a sharp curved point, 

 with a small cushion-like tuft of hairs immediately below it. The 

 centre of the rosette, formed by these tubercles is filled with soft, 

 short woolly hairs, from which the flowers spring ; they are erect, 2 



Fig. 7. Anhalonium Williamsii. 



inches long, with numerous, narrow white petals, a cluster of deep 

 yellow anthers occupying the centre. Syn. MamiVaria prismatica 

 (Bot. Mag., t. 7279), M. aloides, M. return, Anhalonium retus-um. 



A. pulvilligerum. 



This also resembles A. prismaticum, but with less crowded 

 and more elongated tubercles, which are 2 inches long and 1 inch 

 broad, and tufted with hairs. Syn. A. elongatum. 



A. Williamsii. 



In this we have a very distinct species (Fig. 7), known 

 as the " Dumpling Cactus," from the puffed-out, tumid appearance 

 ol its stems, which frequently branch at the base, so as to 



