CEPHALOCEREUS. 51 



Cereus barbatus Wendland (Salm-Dyck, Cact. Hort. Dyck. 1844. 29. 1845) was given 

 as a synonym of Cereus floccosus. Cereus royenii armatus Salm-Dyck (Walpers, Repert. 

 Bot. 2: 276. 1843), and C. royenii floccosus Monville (Labouret, Monogr. Cact. 343. 1853) 

 are given only as synonyms. 



Cephalocereus fouachianus Ouehl (Monatsschr. Kakteenk. 20: 39. 1910), name only, 

 belongs here. 



Cereus gloriosus (Pfeiffer, Enum. Cact. So. 1837) was printed as a synonym. 



Illustrations: Monatsschr. Kakteenk. 12: 56, as Pilocercus royenii; Journ. N. Y. Bot. 

 Card. 7: f. 4, this last as Pilocercus sp. 



Figure 74 is from a photograph taken by Frank E. Lutz on Desecheo Island, in 1914; 

 figure 69 represents a flower of the plant from Culebra Island, collected by Dr. Britton. 



. 



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FIG. 75. Cephalocereus robustus. 



FIG. 76. Cephalocereus cometes. 



