CEPHALOCEREUS. 



29 



Photogr 



from Dr. L 



Joazeiro, Bahia 



from 



a spine-areole of its stem; figure 27 shows the flower. 

 4. Cephalocereus fluminensis (Miquel). 



Cactus melocactus Vellozo, Fl. Flum. 205. 1825. Not Linnaeus, I75.^ 

 Cereus fluminensis Miquel, Bull. Sci. Phys. Nat. Neerl. 1838: 48, 1838. 

 Pilocereus vellozoi Lemaire, Rev. Hort. 1862: 427. 1862. 

 Cephalocereus melocactus Schumann in Martins, Fl. Bras. 4*: 215. 1890. 

 Pilocereus melocactus Schumann, Monatsschr. Kakteenk. 3: 20. 1893. 

 Cereus melocactus Berger, Rep. Mo. Bot. Gard. 16: 62. 1905* 



Growing generally in clumps, clambering over rocky cliffs; branches erect, spreading or pendent^ 

 I to 2 meters long; ribs 12 to 17, i to 1.5 cm. high, acute, separated by acute intervals; spines acicular, 

 yellow, the longest ones 3 cm. long; pseudocephalium 

 on one side of the branch, of a dense white felt, 2 to 

 3 cm. thick, intermixed with long yellow bristles, 4 to 

 7 cm, long; areoles close together, circular, with short 



with 



7 cm 



long; style long-exserted ; fruit bright red to purple, 

 obovoid, 3 cm. long, naked, almost hidden in the mass 

 of white wool of the pseudocephalium ; seeds black, i 

 mm. in diameter, tuberculate. 



J 



r 



Type locality: On island in harbor of Rio de 



iro, Brazil. 



Distribution: On rocky cliffs and islands along 



from Rio de J 



w 



figured 



named 



name which had already been used by Linnaeus 



Fig. 26. 

 Fig. 27. 

 Fig. 28. 



Fruit of Cephalocereus fltiminensi 

 Flower of Cephalocereus purpureas. 

 Chister of spines of same. X0.7. 



X0.7 



X0.7. 



Fig. 29. — Cephalocereus fluminensis. 



for another plant. 



common 



J 



herbarium material was in the Washington and New York 

 lected it in Brazil in 19 15. 



5V 



♦Schumann (Martins, Fl. Bras. 4*: 216. 1890) 



