CEREU. 39 



placed upon a shelf near the glass from October to March, keep- 

 ing it dry, till early in summer. 

 C. cirrhiferus. 



Stems prostrate, small, very proliferous, rooting freely ; 

 branchlets upright, five-angled, wit'i slightly raised tubercles, 

 upon which are ten short hair-like spines, arranged in a star, and 

 surrounding three or four central erect spines, all whitish 

 and transparent. Flowers large, bright red, nearly 4 inches in 

 diameter, regular as a Sunflower, and lasting about a week. 

 Introduced from Mexico in 1847. It requires similar treatment 

 to C. Berlandieri. 



C. enneacanthus. 



8 terns about 6 inches high by 2 inches in diameter, cylin- 

 drical, bright green, clustered in old specimens. Ribs shallow ; 

 spines straight, yellowish, longest about 1 inch. Flowers borne in 

 June near the top of the stem (Fig. 15). petals deep purple ; stamens 

 yellow. It should be grown in a sunny position as near to the 

 roof-glass as is possible. Texas. 

 C. Eruca. 



Stem prostrate, rarely branched, 1 foot to 3 feet long, 



3 inches to (> inches in diameter. Ribs thirteen to twenty-one, 

 with closely-set spine tufts ; spines stout, straight, the 

 raclials terete nearly 1 inch long, the centrals thicker, angled or 

 flattened, one wide one in each tuft pointing downwards. Flowers 



4 to 6 inches long, yellow. " A plant of very curious and 

 uncouth habit, creeping over and accommodating itself to every 

 obstacle, often in large masses, covering many square yards. 

 The manner of growth, with uplifted heads and prominent rellexed 

 spines, gives the plant a resemblance to huge caterpillars." 

 California. 



C. Fendleri. 



One of the best. Stems pale green, about 6 inches high, rarely 

 branching, often in clusters. Ridges running spirally round the 

 stem ; spines brown, an inch or more in length ; flower tube 1 inch 

 long, green, spiny ; p?tals and sepals forming a cup 3 inches in 

 diameter, bright purple ; stigma and anthers green. It flowers in 

 June. New Mexico. Can be grown in a sunny sheltered position 

 out of doors, and is one of the showiest of the hardier 

 species. 

 C. giganteus. 



The giant of the family. It grows very slowly, a plant 6 inches 

 high being ten years old. It flowers when 12 feet high, but 

 grows four or five time/? that height, when it develops lateral 

 branches, which curve upwards. Large imported stems of it have 

 been seen at Kew, but they do not live long under cultivation. 

 Native of Mexico and California. 



