38 



THE CACTACrjAB. 



15. Cephalocereus bahamensis Britton, Contr. U. S. Nat. Herb. 12: 415. 1909. 

 Cereus bahamensis Vaupel, Monatsschr. Kakteenk. 23: 23. 1913. 

 Plant 3 to 4 meters high, often 20 cm. thick at the base; branches divergent-ascending, 7 to 9 

 cm. thick, dull green, not pruinose, 10 or n-ribbed, the ribs blunt or acutish, rather higher than 

 wide; areoles 1 to 1.5 cm. apart; spines 15 to 20, acicular, radiately spreading and ascending, grayish 

 brown to yellowish brown when old, 1 to 1.5 cm. long, the young ones yellowish with darker bases, 

 the uppermost 2.5 to 3 cm. long; wool very short, shorter than the spines, or none; flower 5 to 6 

 cm. long, brownish outside, the tube bluish; inner perianth-segments creamy white, tinged with 

 pink, acute; style pale greenish white, sometimes slightly exserted; fruit depressed-globose, 3 to 

 4 cm. in diameter. 



Type locality: Frozen Cay, Berry Islands, Bahamas. 



Distribution: Bahamas. 



Illustration: Journ. N. Y. Bot. Gard. 

 11 : f. 20. 



Plate iv, figure 3, shows a cutting of 

 the type plant which flowered in the 

 New York Botanical Garden July 24, 

 191 2. Figure 48 is from a photograph 

 of the type plant in flower ; figure 49 is 

 from a photograph taken by Dr. Paul 

 Bartseh on Andros Island. 





Hk ■Oct/ j&T» 



WMm 



■km, ' ' llBWB||rffiK&H| 



Fig. 48. — Cephalocereus bahamensis. 



Fig. 49. — Cephalocereus bahamensis. 



16. Cephalocereus deeringii Small, Journ. N. Y. Bot. Gard. 18: 201. 1917. 



Plant slender, often becoming 10 meters tall, the stem erect, simple or with few erect, short or 

 elongated fastigiate branches which are ascending or erect and appressed to the main stem, the 

 branches deep green, but sometimes rather light, usually 10-ribbed, sometimes 9-ribbed; areoles 

 copiously short-hairy, the hairs rather persistent; spines acicular, 25 to 31 together, the longer ones 

 1 cm. long or more; flowers opening in the afternoon, about 6 cm. long, elongate-campanulate, 

 light green without; outer perianth-segments obovate, obtuse, rounded, or emarginate; inner 

 perianth-segments 9 to 1 1 mm. long, clawless, oval, rounded at the apex, erose, scarcely narrowed 

 at the base; anthers less than 2 mm. long; fruit much depressed, 3.5 to 4 cm. in diameter, dark red; 

 seeds about 2 mm. long, shining. 



