540 



The Dictionary of Gardening. 



Echiuocact us— continued. 



> 



Fig. 22. 



Portion of Ridoe. with Spines, of Echinocactus 



polycephalus. 



over 3in. long in olfl plants, and aometimes curred. California 

 and Colorado, 1886. Warm bouse. See Tig. 22. 



X. Pottsli (Potts*). /. yellow, about 2in. across, short-tubed. 

 several expanding together on the top of the stem. Summer. 

 Stem globular. Ijit. in diameter ; ridses about a dozen, rounded 

 and even, with acute sinuses; spines lin. lonsr, bristle-Hke, 

 arranp:ed in clusters of seven or nine, with a cushion of white 

 -wool at the bjiae. California, 1840. Warm house. See Fig. 25. 



XL Scopa Grlstatns (crested). A curii>us monstrosity, owingr its 



origin to faaciation, such as occurs in the Cockscombs, Echeverias, 



*c. The plant shown at Fig. 2^ is grafted on the stem of a 

 Cereus. 



H. senilis (old), fl, light pink, l^in. long, lin. in diameter, having 

 a. scaly, cylindrical tube. Stem stout, cylindric, with sixteen or 

 eighteen ribs, having tufts of numerous hair-like spines, curving 

 upwards. Chili. 1886. (R. G. 1230 a.) 



H. Wislizeni (Wislizen'sX JL greenish -ye How, about 2in. long 

 and broad, developed only on large plants. ?iummer and autumn. 

 Stem depressed when young, large and cylindrical when old; 

 ridges about a score, regular and shurp-edged, bearing bundles 



ZiClli no cactus — continued. 



Fig. 23. Echi:^ocactus Pottsii. 





I 



Fig. 24. Echinocactus Scopa cristatcs 



