38 



THE CACTACHAK. 



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



CereuS bahamensis Vaupcl, 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 11 -ribbed, the ribs blunt or acutish, rather higher than 

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

 brown to yellowish brown when old, i 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 



4 cm. in diameter. 



greenish 



gm 



Type locality: Frozen Cay, Berry Islands, Bahamas 

 Distribution: Bahamas. 

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



II : 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 

 Bartsch on Andros Island. 



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Fir.. 48. — Cephahx-creus bahamensis 



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Fig. 49. — Cephalocereus bahamensis 



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16. Cephalocereus deeringii Small, Journ. N. Y. Bot. Gard. i8: 201. 19 17. 



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 lo-ribbed, sometimes 9-ribbed; areoles 

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

 I 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. 



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