CERCUS. S7 



iii thick i loss, hearing on the ridges little tubercles crowned with 

 short spines Flowers 4 inches across, composed of a regular whorl 

 of .strap-shaped, blight purple petals, an erect bristly tube, and a 

 disk-like cluster of rose-coloured stamens, the stigma standing well 

 above them. Native of South Texas and Mexico, growing on dry, 

 Jimny hillsides. It thrives in a cool greenhouse or frame where it 

 can get ple.ity of sunshine. In winter it should be placed close to 

 the glass safe from frost. Also known as C. repens and C. Deppii. 

 C. Blankii. 



Differs from C. Berlandieri in having longer, broader, less 

 spreading petals, a club-shaped stigma, and in the colour, which 

 is a deep rose, Hushed in the throat with crimson. It is very common 

 in Continental gardens, where it is grown out-of-doors, being pro- 

 tected from cold in winter by a handlight and straw. It flowers in 

 summer. 

 C. caerulescens. 



An erect, tall Cactus, rarely branching unless made to do so by 

 cutting off the top of the stem ; ridges prominent, waved, and 

 bearing tufts of blackish wool, in which are set about a dozen black 

 spines, half an inch long ; when young the stem is bluish in colour. 

 Flowers springing from the ridges, about 8 inches long, the tube 



Pig. 14. Cereus caespitosus. 



covered with red-green scales, which change upwards into sepals ; 

 petals spreading, white, the margins toothed, and forming a 

 spreading cup, not unlike a large white single Camellia. It is too 

 tall-stemmed to be recommended for windows or small greenhouses ; 

 but where room can be afforded it, the attractive colour of its 



