tube. It must, however, be a very near ally. As both 
E. mammulosus and concinnus are natives of Uruguay, I 
have doubtfully assumed LH. Joadii to be a countryman of 
those species. 
Descor. Plant two and a half inches in diameter, depressed 
globose, with a sunken crown, green, glabrous, except a 
the spine-bases. ibs about twenty, vertical, rounded, 
crenately lobed into low rounded mammille, which are 
most prominent towards the crown of the plant. Spines 
in groups of fifteen to twenty-five, sunk in the crenatures, 
with a small tuft of pale hairs at their bases; all very 
slender, terete and quite straight, outer a quarter to one- 
third of an inch long, erecto-patent, very unequal, pale; inner 
one to three inner three-quarters of an inch long, stouter, 
red, quite horizontal or the upper erect. lower two 
inches long by two and a half in diameter. Perianth funnel- 
shaped; tube one and a half inch long, densely clothed 
with short imbricating oblong scales with rounded tips, each 
crowned with a lanceolate scale and eight to ten slender 
red spines, all surrounded at the base by a tuft of long 
curly hairs. Sepals and petals together in several series, 
lanceolate acuminate, golden yellow. Anthers very small. 
Stigmas ten to twelve, erect, bright red.—J. D. H. 
Fig. 1, Tuft of spines ; 2, scale from tube of perianths ; 3, stamens; 4, stigmas :— 
all enlarged, 
