BRITTON AND ROSE—CEREUS AND ITS ALLIES. 429 
Hylocereus napoleonis ((rraham). 
Cereus napoleonis Graham, Bot. Mag. 63: p/. 3458. 1836. 
Cereus triangularis major Salm-Dyck, in Pfeiff. Enum Cact. 117, 1837, as synonym. 
Type Locauity: Unknown; described from a cultivated plant. 
Distrisution: West Indies and southern Mexico, according to Schumann. 
InLusTRATION: Bot. Mag. loc. cit. 
Hylocereus ocamponis (Salm-Dyck). 
Cereus ocamponis Salm-Dyeck, Cact. Hort. Dyck. ed. 2. 220. 1850. 
Type Locauity: Mexico or Colombia. 
DistrrputTion: Mexico? 
Hylocereus stenopterus (Weber). 
Cereus stenopterus Weber, Bull. Mus. Nat. Hist. 8: 458. 1902. 
Type Locauity: ‘ Vallée de Tuis,’’ Costa Rica. 
DistriputTion: Costa Rica, Central America. 
Hylocereus triangularis (L.). 
Cactus triangularis L. Sp. Pl. 468. 1753. 
Cereus compressus Mill. Gard, Dict. ed, 8. no. 10. 1768. 
Cereus triangularis Haw. Syn. Pl. Suce. 180, 1812. 
Cereus trigonus Haw. op. cit. 181. 
Cereus anizogonus Salm-Dyck, Cact. Hort. Dyck. ed. 2, 52, 1850, as synonym. 
Type tocauiry: ‘‘In Brasilia, Jamaica,’ according to Linnzeus, but doubtless 
really Jamaica. 
DistrIBuTION: Southern Mexico to Panama; Jamaica; Cuba to Porto Rico; widely 
planted and escaped from cultivation in tropical America, the West Indies, and 
southern Florida. 
IuLustrations: Pluk. Alm. pl. 29. f. 8; Plumier, Pl. Am. ed. Burmann pl. 200. f. 1, 2; 
Bot. Mag. pl. 1884; Schum. in Mart. Fl. Bras. 4°: pl. 42. 
Gosselin recognizes Cereus trigonus as a good species. 
The relative thickness of the stems is not a valid specific character in the West 
Indian plants of this genus. 
Hylocereus tricostatus (Gosselin). 
Cereus tricostatus Gosselin, Bull. Soc. Bot. France 54: 664. 1907. 
Type Locauity: Description based on plants from two localities in Mexico, viz, 
Huejolitlan, Puebla, and Guadalajara, Jalisco. 
DistriBuTion: Only known from type collection, 
14. SELENICEREUS gen. nov. 
Stems slender, trailing or climbing, elongated, with low ribs, giving off roots 
irregularly; flowers large, often very large, nocturnal; bracts of ovary and flower 
tube usually bearing long hairs and bristles; fruit large, reddish, covered with clus- 
ters of deciduous spines. 
Type species Cactus grandiflorus L. 
Selenicereus was considered a subgenus of Cereus by A. Berger under this name. 
Selenicereus boeckmanni (Otto). 
Cereus boeckmanni Otto; Salm-Dyck, Cact. Hort. Dvck. ed. 2. 216. 1850. 
Cereus eriophorus Griseb, Cat. Pl. Cub. 116. 1866, not Pfeiff. 1837. 
Tyre Locauity: Not cited. 
Disrrisutrion: Cuba; introduced into the Bahamas. 
