OPUNTIA. 



167 



,itf .. 





^ _; 



Plate XXXI, figure i, represents a flowering joint of a plant collected near Brownsville, 

 Texas, by Dr. Rose in 1913 ; figure 2 represents a flowering joint of a plant obtained by the 

 same collector at the same locality; plate xxxii, figure i, represents a flowering joint of a plant 

 sent by Mr. M. Mackensen from the type locaUty of 0. leptocarpa in 1910; figure 2 shows 

 the fruit of the same. 



h 



180, Opuntia cantabrigiensis Lynch, Gard. Chron. III. 33: 98. 1903. 



Opuntia engelmannii cuija Griffiths and Hare, N. Mex. Agr. Exp. Sta. Bull. 60: 44. 1906. 

 Opuntia cuija Britton and Rose, Smiths. Misc. Coll. 50: 529. 1908. 



Rounded bushy plant, i to 2 meters high; joints orbicular to obovate, 12 to 20 cm. long, rather 

 pale bluish green; areoles remote, large, filled with brown wool; spines usually 3 to 6 but sometimes 

 more, somewhat spreading, acicular, yellow with brown or reddish bases, 1.5 to 4 cm. long; glochids 

 numerous, large, i cm. long or more, yellowish, not forming a brush; flowers 5 to 6 cm. long, yel- 

 lowish with reddish centers; upper areoles on the ovary bearing long bristles; stigma-lobcs green; 

 fruit, globular, about 4 cm. in diameter, purple; seeds numerous, small, 4 mm. in diamter. 



Type locality: Described from specimen in Cambridge Botanic Garden, England. 

 Distribution: Very common in the States of San Luis Potosi, Queretaro, and Hidalgo, 



Mexico 



Mortol 



species, probably belongs here. 



Our determination of the identity of 0. cantahrigi 



plant of the former received from Mr. Lynch. 



Illustrations: N. Mex. Agr. Exp. Sta. Bull. 60: 

 Gard. Chron. III. 30: f. 123, as Opuntia engelmannii. 



Figure 204 represents joints of a nlant collected by 

 Mexico, in loo^. 



,v 



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■<i 



i. 



: :< . jr. 



Fig. 206 



. cafiada. X0.75 



i:. ■ 



■^ , 



Fio. 5o4. — O. cantabrigiensis. X0.4. 



procumben 



Fig. 205. — O. procumbens. X0.5. 



1856. 



stems low and spreading, forming broad masses i™"'/„;'^'Sef Sfo tj^fcm.' a^att" 

 5 dm. in diameter, yellowish green, somewhat glaucous, areoles aismni u ;. 



J J 



1" . 



