138 



THE CACTACEAE. 



Stems rarely single, usually of several branches, sometimes of many, arising from near the base, 

 starting nearly at right angles to the main trunk but soon erect, the tallest sometimes 8 meters high ; 

 ribs usually 16 or 17, low and broad, separated by narrow intervals, divided into large tubercles 

 even when fully mature; radial spines when young light yellow with brown tips but soon becoming 

 gray, 8 to 12, slightly spreading, often stout, 1 to 2 or even 4 cm. long; central spine single, porrect, 

 often stout, 4 to 7 or even 12 cm. long; flowers 14 cm. long, outer perianth-segments white but tinged 

 with red or brown; inner perianth-segments white, acuminate; style green below, cream-colored 

 above; stigma-lobes cream-colored, about 18, 1.5 cm. long; fruit globular. 



Type locality: Described from cultivated plants supposed to have come from Chile. 



Distribution : On the hills in and about the great central valley of Chile, extending from 

 Curico north to Puenta Colorado in the northern part of the province of Coquimbo. 



While this plant shows considerable variation in its spines, we do not believe it possible 

 to separate the species into varieties as Schumann has done. 



Echinocactus jeneschianus Pfeiffer (Allg. Gartenz. 8:406. 1840) and Echinocactus 

 pepinianus echinoides (Labouret, Monogr. Cact. 177. 1853) are referred to Echinocactus 

 echinoides by Labouret. 



Echinocereus chiloensis Console and Lemaire 

 (Rev. Hort. 35: 173. 1864) is only mentioned, but 

 Lemaire later (Cact. 61. 1868) states that it is 

 based on Cereus chiloensis, which definitely places 

 it here. 



Cereus chilensis funkianus (Schumann, Ge- 

 samtb. Kakteen 61. 1897) has never been formally 

 published. 



Cereus polymorphic (published as a synonym 

 of Opuntia polymorpha in Forster, Handb. Cact. 

 472. 1846), referred here by Schumann, should 

 doubtless go elsewhere, for it is said to come from 

 Mendoza, Argentina. It may be a form of 

 Opuntia glomerata. 



X0.5. 



Trichocereus coquinibanus. 



Cereus pycnacanthus Salm-Dyck (Allg. Gartenz. 13:355. 1845), and Cereus pano- 

 plaeatus Cels (Salm-Dyck, Cact. Hort. Dyck. 1849. 44. 1850) published as a synonym of 

 the former, were both referred to Cereus chilensis by Schumann, but they came from 

 Bolivia and the description does not fit this species. 



