marginal spines, which are one-quarter to one-half inch long 
deflexed grey with red tips, besides one or two central ones of 
about the same length. F/owers one or two, produced on the 
terminal joint, ascending, ten inches in diameter, white with 
a yellow-green tinge. Calyw-tube five inches long, one inch 
in diameter, terete, green, smooth, glabrous, with few dis- 
tant appressed green triangular scales; lobes about ten, 
linear-oblong, subacute, yellow-green, purplish at the back 
towards the tip. Petals very numerous, in about three 
series, spreading, narrow obovate-oblong, obtuse or apiculate, 
erose, ivory white, faintly undulate. Stamens excessively 
numerous, forming a broad cylinder two and a half inches in 
diameter, and two inches high, of filiform pale-green fila- 
ments, the lower most numerous, incurved at the apices; 
anthers small. Style very stout; stigmas about eighteen, 
subulate, erect, yellow.—/. D. H. 
Fig. 1. Reduced figure of plant. 
