OPUNTIA. 



189 



Opuntia pittieri differs from 



'■ ■ ^ 



somewhat 



joints thinner, 

 with brown or 



" r- 



more 



-V / 



Figu 



.\ 



211. Opuntia cordobensis Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 513. 1905. 



Much branched, the trunk i to 2 meters long, 20 cm. in diameter, very spiny; joints large, 3 dm. 

 long or more, broadly oblong to obovate ; areoles prominent, numerous ; spines i to 6, white, somewhat 

 spreading, a little flattened and twisted; flowers usually on the margins of the joints; petals about 

 12, yellow; fruit pyriform, yellowish both within and without, 8 cm. long; seeds about 3 mm. long. 







^L 



I 



\ 



\ rf 



. y 



^ _ 



-1-^' 



% 

 V 







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Fig. 232.— O. pittieri. X0.4. Fig. 234-— Fruit of O. cordobensis. X0.7 



Fig. 233. — O. cordobensis. X0.4 



Type locality: Near Cordoba, Argentina. 



Distribution: Northern Argentina. , . ^/ . , 



The only white-spined species observed by Dr. Rose in 1915 about Cordoba were 



cus-indica. in cultivation, and what we have taken to be O. cordobensis. The latter 



fi 



very 



sometimes planted as hedge 



Dr. Spegazzini states that it has the habit of 0. labourehana. 



■.?.' 



Figure 233 represents a joint of the plant collected by Dr. Rose near Cordoba Argen- 



figure 234 represents the fruit as collected by J. A. Shafer at Cahlegua, 





Argentina, in 



(N 



,k V 



