44 CACTUS CULTURE FOB AMATEURS. 



about i inch apart. Flowers 3 inches long ; tube spiny ; petals 

 blood-red, concave, rounded at the tip, forming a shallow cup. 

 Exceptional in the length of time its flowers last when they develop 

 in May. It may be grown in a cool greenhouse, frame, or room 

 window, as it requires only to be protected from frost. Mexico, 

 about 1890. 



C. Pringlei. 



Stem stouter than but not so high as that of C. giganteu.*, 

 with branches starting about 2 feet from the ground. The tallest 

 stems are described as about 50 feet high and 4 feet in diameter, but 

 the average is about half that height. Ribs about a dozen, along 

 which there is almost a continuous line of spine tufts ; the spines 

 small, and mixed with ash-coloured hairs, except on old parts of 

 the stem, where the spines are flat, from 1 to 2 inches long, and 

 there are few or no hairs mixed with them. Flowers scattered along 

 the ribs below the top, white, tinged with green or purple, 3 inches 

 long. Lower California, " covering the ground almost entirely for 

 miles." 



C. procumbens. 



tS terns spreading prostrate, with upright branches 4 inches 

 long, ? inch thick, four-angled, with small spines in tufts along 

 the angles. Flowers 3 inches long and wide, the petals spreading 

 and recurved, daisy-like ; bright rose purple ; produced in May and 

 June. Requires cool treatment with plenty of summer sunshine and 

 complete drought and protection from frost in winter. Mexico. 

 (F,g. 18) 



C. repandus. 



Stem erect, 10 feet or more high. Ribs eight or nine in 

 number, undulated, and bearing tufts nearly 1 inch apart, of about 

 ten stiff brown spines set in a cushion of white wool. Flowers 

 with a scaly tube, 4 inches long; spreading, incurved, pale brown 

 sepals, and two rows of I road, overlapping, white petals ; stair, ens 

 white, with yellow anthers ; stigma yellow. Requires stove 

 treatment. (iFig. 19.) 



C. Sargentianus. 



Stems in clumps of eight or more, the tallest being 10 feet 

 Aigh. .'ingles five or six, forming obtuse ribs, the spine-tufts closely 

 set and formed of about ten stout, grey, straight spines, * inch long, 

 and short grey hairs. Flowers, borne only by the tallest stems, 

 rose-coloured, with yellow anthers and white style, 1 inch long and 

 1 inch wide, and almost hidden by the spines, which are much 

 longer and flexuose, and occur iu larger clusters on the tallest 

 flowering stems. Fruit smooth, red, said to be edible. Closely 

 related to (-. Schottii. Lower California. 



