iSS 



THE CACTACEAE. 



IMuurds's Bot. Reg. 21: pi. 1807; Card. Mag. 55: 689, all as Cercus Irian^ulnris; Curtis's 

 Bot. Mag. 44: pi. 1884; London, Encycl. PI. f. 6870, as Cactus triangularis; Ann. Rep. 

 .Smiths. Inst. 1917: pi. 10; Scientific Monthly 5: 287, as night -blooming cereus; Britton, 

 Flora Bermuda f. 278. 



Plate xxx shows a flowering joint of a plant brought by Dr. Small from southern 

 Florida to the New York Botanical Garden in 1903, where it has since bloomed every year; 



FIG. 264. Hylocereus unclatus. 



plate xxxn, figure i, shows a fruiting joint of a plant in the same collection brought from 

 Tehuacan, Mexico, by Dr. MacDougal and Dr. Rose in 1906. Figure 263 is from a photo- 

 graph taken by Paul G. Russell at Machado Portella, Bahia, Brazil, in 1915; figure 264 

 is from a photograph by A. S. Hitchcock, 1918, showing a hedge of night-blooming cereus 

 on a wall at Punahou College, Honolulu; the picture was taken early in the morning; the 

 preceding evening the hedge was viewed by hundreds of people. The plant, in Honolulu, 

 comes in full flower only once or twice a year and is then a marvelous sight. 



FIG. 265. Hylocereus cubensis. Xo.66. 



8. Hylocereus cubensis sp. nov. 



Stems slender, much elongated, freely rooting, 3-angled, dull green, 2 to 4 cm. in diameter; 

 margin of joints scarcely crenate, becoming horny; spines 3 to 5, black, conic, 2 to 3 mm. long; 

 flowers large, white, about 20 cm. long; ovary bearing large leafy scales; fruit a little longer than 

 broad, 10 cm. long, reddish. 



