q 



i 



i 



50 



THE CACTACEAIi. 



arbuscula 



1856. 



Opuniia neoarhuscula Griffiths, Rep. Mo. Bot. Gard. 19: 260. 1908. 



Forming a bush 2 to 3 meters high, often with a rounded, very compact top with numerous 

 short branches; trunk short, 10 to 12 cm. in diameter, with several woody branches; ultimate jomts 

 5 to 7.5 cm. long, 8 mm. in diameter, with low, indistinct tubercles; leaves small; spines usually i, 

 but sometimes several, especially on old joints, porrect, up to 4 cm. long, covered with loose straw- 

 colored sheaths; flowers greenish yellow tinged with red, 3.5 cm. long; fruit often proliferous, some- 

 times only one-seeded. 



. . A —1' ",. 





Y 





^''-. -r.-'*?^, .V.,.; j^^^a^',^rf ^.j -^ ^ , ■> ' 



y -..,,- K-*-, 



< W, .^>' 'f^. 







,* 



.L 



f 1 



Fig. 60. — Opuntia arbuscula. 



Type locality: On the lower Gila nej 

 Distribution: Arizona and Sonora. 

 Opuntia congesta Griffiths (Rep. Mo 

 909), from the description, is near this 



Maricopa 



■; ^?^ 



size and shape of the fruit. 



armament, in the length 



World 



Exp 



Wash 



pi. 6, f.'2; Bull. Torr. Club 32: pi. 9, f. 3; 

 19: pi. 22; 19: pi. 23, in part, this last as 



I ' 



tion at Tucson, Arizona. 



J. W. Tourney 



from a photograph taken by Dr. MacDougal 



from 



Mountains, Arizona; figure 62 shows a fruiting branch from the same 



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