entitle it to horticultural favour. The cultural require- 
ments of C. Silvestrii are a loamy soil and abundant sun- 
shine; a fair allowance of water should be supplied in 
summer, with little or none at all in winter. 
Descriprion.—/erb; stems succulent, prostrate or the 
central ascending, 14-4 in. long, 4-7 lin. thick, 8-angled, 
pale-green ; spine-cushions very closely set; spines 16-20 
to a cushion, setaceous, 1 lin. long or shorter, white. 
Flowers showy, lateral, erect, infundibuliform; tube 1-1 
in. long, straight, 4-5 lin. wide at the top, reddish, loosely 
clothed with very small, ovate acute, pilose scales ; segments 
3—4-seriate, spreading, 4-2 in. long, 2 lin. wide, lanceolate, 
acute, brilliant orange scarlet. Stamens included ; filaments 
red; anthers pale yellow. Style pale yellow, stigmas 8-9. 
Fig. 1, a cushion of spines, from the stem; 2, scale with hairs, from the 
flower-tube ; 3, stamen; 4, stigmas :—all enlarged. 
