feature which readily distinguishes them from the other 
species. 
Description.—/erb, succulent, globose with a de- 
pressed apex, simple or proliferous, 1-2} in. across; 
tubercles convex, spirally arranged, under 1 lin. high, 
bright green; spines in tufts of 25-30, the central and 
radial similar, 1-1} lin. Jong. Flowers rising from the 
base of the plant, erect, long-infundibuliform, 1—1} in. 
long and as much across, glabrous; tube slender, curved 
at the base, bright crimson, dotted with ovate, acuminate, 
reddish tawny scales; petals about 12, up to 2 in. long, 
+ in. wide, linear-oblong, acute, minutely denticulate at 
the tip, bright vermilion. Stamens 15-30, whitish. 
Stigma 4-5-lobed, whitish. 
Fig. 1, a tuft of spines; 2 and 3, stamens; 4, style and stigmas :—all enlarged. 
