660 PHANEROGAMIA. 



There are no specimens in the collection; but there is a good 

 drawing, made from the living plant by the late Mr. Agate ; from 

 which Dr. Engelmann has drawn up the characters given above, and 

 the subjoined description and remarks. — "Stems several from the same 

 very thick root, or proliferous at the base, 2§ to 3 inches high, an 

 inch and a half or less in diameter, ovoid-cylindrical ; the setaceous 

 straight prickles half an inch in length, brown. Flowers upright from 

 the summit of the stems, 14 lines long, 9 lines in diameter; the 

 spreading sepals about 20 in number, linear-oblong, obtuse, yellowish : 

 petals about the same number, ovate-oblong, obtusish, yellow. Style 

 half an inch long : stigmas 9, radiate. 



" M. flavescens is one of the very few species coming from tropical 

 South America. The descriptions which I find in different works 

 agree tolerably well with our plant ; though the stems are said to be 

 proliferous towards the summit, the spines are generally lighter- 

 coloured, and the yellow flowers appear in a ring around the top." 



2. C EKE US, Haw. 



1. Cereus Chilensis, Golla, var. polygonus, Salm-Dyck. 



Cereus Chilensis, Colla, PI. Hort. Ripul. App. 2, p. 342; Pfeiff. Enum. p. 86; Salm- 

 Dyek, Cact. Hort. Djek. p. 44 & 199. 



Hab. Chili; common from near Valparaiso to the Cordilleras, 

 according to Dr. Pickering's memoranda. A drawing only in the 

 collection. 



" This species evidently belongs to the section Yelutini of Prince 

 Salm. : stout and erect Gerei, with broad and interrupted ribs, very 

 narrow grooves, and covered with a more or less velvety epidermis ; — 

 all natives of Chili and adjacent countries. This appears to have 13 

 or 14 ribs [14 or 15, Pickering], more than any species of this sec- 

 tion, with the exception of the above-named form, which has 15. 

 The tubercles of the ribs are 9 lines long, 6 lines wide, and bear 

 towards their upper end a whitish areola, of 3 lines in diameter, 



